2D Echocardiography Study Guide

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2D Echo
Study Guide

2D Echocardiography Study Guide

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Reporting Panel

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Cardiac Pathology

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Case Study

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Basic Views of B-Mode Echocardiography are standard two-dimensional ultrasound views used to evaluate cardiac chambers, valves, septa, pericardium, ventricular function, and major vessels. Proper image acquisition helps in accurate diagnosis, documentation, and follow-up of cardiac abnormalities.

🔶 Introduction

B-mode echocardiography, also called two-dimensional echocardiography, is a real-time ultrasound technique used to visualize cardiac anatomy and motion. It provides grayscale images of the heart and helps assess chamber size, wall motion, valve morphology, septal integrity, pericardium, and great vessels.

🔶 Clinical Indications

1. Chest pain or suspected cardiac disease.
2. Dyspnea or heart failure assessment.
3. Murmur evaluation.
4. Valvular heart disease.
5. Cardiomyopathy.
6. Congenital heart disease screening.
7. Pericardial effusion assessment.
8. Follow-up after cardiac treatment or surgery.

🔶 Patient Preparation

No special fasting is usually required. Explain the procedure to the patient. The patient is commonly positioned in the left lateral decubitus position to improve acoustic access. ECG leads may be attached if required. Apply adequate ultrasound gel to obtain good probe contact.

🔶 Equipment

Ultrasound Machine: Echocardiography-capable system.
Probe: Phased-array cardiac transducer, commonly 2–5 MHz in adults.
Modes: B-mode, M-mode, Color Doppler, Pulsed-Wave Doppler, Continuous-Wave Doppler, and Tissue Doppler if available.
Accessories: ECG cable, ultrasound gel, patient couch, and image recording system.

🔶 Structures Evaluated

1. Left atrium and right atrium.
2. Left ventricle and right ventricle.
3. Mitral, tricuspid, aortic, and pulmonary valves.
4. Interventricular and interatrial septa.
5. Left ventricular outflow tract and right ventricular outflow tract.
6. Aortic root and ascending aorta.
7. Pulmonary artery.
8. Pericardium and pericardial space.

🔶 Routine Measurements

1. Left ventricular internal diameter in diastole and systole.
2. Interventricular septal thickness.
3. Posterior wall thickness.
4. Left atrial size or volume.
5. Aortic root diameter.
6. Ejection fraction estimation.
7. Right ventricular size and function.
8. Pericardial effusion measurement if present.

🔶 Normal Findings

Normal B-mode echocardiography shows normal chamber size, preserved ventricular contraction, normal valve opening and closing motion, intact septa, no obvious intracardiac mass or thrombus, no significant pericardial effusion, and normal relationship of great vessels.

🔶 Common Abnormal Findings

1. Left ventricular dilatation or hypertrophy.
2. Regional wall motion abnormality.
3. Reduced ejection fraction.
4. Valvular thickening, calcification, stenosis, or regurgitation.
5. Right ventricular enlargement.
6. Pericardial effusion.
7. Intracardiac thrombus or mass.
8. Septal defects or congenital abnormalities.

🔶 Documentation

Save representative images and clips from standard views. Document measurements, chamber sizes, valve morphology, ventricular function, septal appearance, pericardial findings, and any abnormality. Include patient details, date, study type, and final impression in the report.

🔶 Clinical Applications

B-mode echocardiography is useful for cardiac screening, assessment of heart failure, evaluation of valve disease, detection of pericardial effusion, evaluation of cardiomyopathy, follow-up of congenital heart disease, and monitoring after cardiac procedures.

🔶 Advantages

1. Non-invasive and safe.
2. Real-time cardiac imaging.
3. No ionizing radiation.
4. Portable and widely available.
5. Useful for bedside evaluation.
6. Allows assessment of anatomy and function.

🔶 Limitations

Image quality may be limited by obesity, lung interference, chest wall deformity, poor acoustic window, tachycardia, patient movement, or inability to position the patient properly. Some lesions may require Doppler, contrast echocardiography, CT, MRI, or transesophageal echocardiography for further evaluation.

🔶 Scanning Technique

A-Basic Views of B-Mode

1. Parasternal Left Ventricular Long-Axis View PLVLA

2. Parasternal Aorta Short-Axis View At the Aortic Valve Level

3. Parasternal Aorta Short-Axis View Main Pulmonary Artery Long-Axis

4. Parasternal Left Ventricular Short-Axis View Mitral Valve Annulus Level

5. Parasternal Left Ventricular Short-Axis View Mitral Valve Level

6. Parasternal Left Ventricular Short-Axis View Mitral Valve Chordae Tendineae Level

7. Parasternal Left Ventricular Short-Axis View Mitral Valve Papillary Muscle Level

8. Left Ventricular Apical Level Short-Axis View

9. Parasternal Four-Chamber View

10. Apical Four-Chamber View

11. Parasternal Right Ventricular Outflow Tract Long-Axis View (1)

12. Apical Left-Heart Two-Chamber View

13. Apical Right-Heart Two-Chamber View

14. Parasternal Descending Aorta Long (Short)-Axis View

15. Coronary Sinus View

16. Long-Axis View of the Left Ventricular Right Anterior-Oblique Position

17. Long-Axis View of the Left Ventricular Apex Parasternal

18. Apical Five-Chamber View

19. Short-Axis View of the Inferior Vena Cava

20. Inferior Vena Cava Long (Short)-Axis View

21. Left Parasternal Right Ventricular Outflow Tract Long-Axis View (2)

22. Left Anterior Oblique Position Left Ventricular Apical Three-Chamber View

23. Subxiphoid Four-Chamber View

24. Subxiphoid Two-Atrium View

25. Subxiphoid Aortic Ventricular View

26. Subxiphoid Inferior Vena Cava Long-Axis View

27. Subxiphoid Ventricular Short-Axis View

28. Suprasternal Aortic Arch Short-Axis View

29. Suprasternal Superior Vena Cava Long-Axis View

30. Suprasternal Aortic Arch Short-Axis View

31. Main Pulmonary Artery Long-Axis View Subxiphoid

32. Transesophageal Two-Atrium View

33. Transesophageal Left Atrial Appendage View

34. Transesophageal Aortic Root Long-Axis View

B-Basic Tracings of M-Mode

1. Parasternal Left Ventricular Long-Axis View M-Mode, Echo Pattern of Heart Base (Aortic Root)

2. Parasternal Left Ventricular Long-Axis View M-Mode, Echo Pattern of Mitral Valve

3. Parasternal Left Ventricular Long-Axis View M-Mode, Echo Pattern of Left Ventricle

4. Great Artery Short-Axis View M-Mode Scan at Pulmonary Valve Level

5. Great Artery Short-Axis View M-Mode Scan at Aortic Valve Level

C-Spectral Doppler and Color Doppler Flow Imaging

1. Spectral Doppler of Mitral Valve Orifice Blood Flow

2. Color Doppler Flow Image of the Mitral Valve Orifice

3. Spectral Doppler of Tricuspid Valve Orifice Blood Flow

4. Tricuspid Valve Orifice Color Doppler Flow Mapping

5. Color Flow Mapping

6. Color Doppler Flow Mapping of the Pulmonary Artery Orifice

D-Pulsed-Wave (PW) Spectral Doppler

1. Apical Four-Chamber View Mitral Valve Inflow

2. Apical Four-Chamber View Tricuspid Valve Inflow

3. Apical Five-Chamber View Left Ventricular Outflow Tract (LVOT)

4. Parasternal Short-Axis View Right Ventricular Outflow Tract (RVOT)

5. Parasternal Short-Axis View Pulmonary Valve Outflow

6. Apical Five-Chamber View Aortic Valve Flow

7. Apical Four-Chamber View Pulmonary Vein Flow

8. Subcostal View Hepatic Vein Flow

9. Subcostal View Inferior Vena Cava (IVC) Flow

10. Suprasternal Notch View Descending Thoracic Aorta Flow

11. Apical Four-Chamber View Left Atrial Appendage Flow

12. Parasternal Long-Axis View Ascending Aortic Flow

E-Continuous-Wave (CW) Spectral Doppler

1. Apical Five-Chamber View Aortic Valve CW Doppler

2. Apical Five-Chamber View Left Ventricular Outflow Tract (LVOT) CW Doppler

3. Apical Four-Chamber View Mitral Regurgitation CW Doppler

4. Apical Four-Chamber View Tricuspid Regurgitation CW Doppler

5. Parasternal Short-Axis View Pulmonary Valve CW Doppler

6. Parasternal Short-Axis View Pulmonary Regurgitation CW Doppler

7. Apical Three-Chamber View Aortic Regurgitation CW Doppler

8. Apical Five-Chamber View Aortic Stenosis CW Doppler

9. Apical Four-Chamber View Mitral Stenosis CW Doppler

10. Parasternal Short-Axis View Pulmonary Stenosis CW Doppler

F-Power Doppler Imaging (PDI)

1. Power Doppler of Mitral Valve Blood Flow

2. Power Doppler of Tricuspid Valve Blood Flow

3. Power Doppler of Aortic Valve Blood Flow

4. Power Doppler of Pulmonary Valve Blood Flow

5. Power Doppler of Left Ventricular Outflow Tract (LVOT)

6. Power Doppler of Right Ventricular Outflow Tract (RVOT)

7. Power Doppler of Pulmonary Vein Flow

8. Power Doppler of Hepatic Vein Flow

9. Power Doppler of Inferior Vena Cava (IVC)

10. Power Doppler of Descending Thoracic Aorta

SonoAcademy Digital MCQ Examination

Topic: Basic Views of B-Mode Echocardiography

Total Questions: 10 | Total Marks: 10 | Time: 30 Minutes

Instruction: Enter your details, start the exam, answer all questions, and download your PDF marksheet after submission.

Time Left: 30:00

1. B-mode echocardiography mainly provides: A. Real-time grayscale cardiac images B. Only blood pressure measurement C. Only ECG tracing D. Bone imaging

2. Common patient position for transthoracic echo is: A. Left lateral decubitus B. Prone only C. Standing only D. Knee-elbow position

3. Which probe is commonly used for adult echocardiography? A. Phased-array cardiac probe B. Endocavitary probe only C. Hockey-stick probe only D. Linear probe only

4. Apical four-chamber view evaluates: A. Both atria and both ventricles B. Kidney only C. Gallbladder only D. Thyroid only

5. Parasternal long-axis view commonly shows: A. LV, LA, mitral valve, aortic valve, and aortic root B. Only urinary bladder C. Only liver veins D. Only bowel loops

6. One routine measurement in echo is: A. Ejection fraction B. Femur length only C. Crown-rump length only D. Kidney stone density only

7. Pericardial effusion is fluid around the: A. Heart B. Brain C. Spleen D. Thyroid

8. B-mode echocardiography has the advantage of: A. No ionizing radiation B. High radiation dose C. Only surgical use D. No real-time imaging

9. A limitation of echocardiography is: A. Poor acoustic window B. Always perfect images C. It cannot image the heart D. It requires radiation

10. Subcostal view is useful for evaluating: A. Pericardial effusion and IVC B. Only wrist joint C. Only ankle ligament D. Only nasal bone

Exam Result

Name:

Email / Mobile:

Topic: Basic Views of B-Mode Echocardiography

Total Marks: 10

Obtained Marks:

Percentage: %

Status:

Foley Catheter with Negative bladder swirl sign

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Foley Catheter
Negative bladder swirl sign

Ultrasound confirmation of correct urinary Foley catheter position and catheter patency

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Swirl Sign

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Saline Test

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USG Report

USG

Negative Bladder Swirl Sign refers to absence of mobile echogenic swirling echoes or turbulence within the urinary bladder lumen during real-time ultrasound after gentle saline instillation through a Foley catheter. It may suggest that the catheter tip is not correctly positioned inside the bladder, the catheter is blocked, kinked, or not patent, and catheter position should be reassessed.

Ultrasound Features of Positive Bladder Swirl Sign:

Main Finding:
FINDINGS: Real-time ultrasound demonstrates no mobile echogenic swirling echoes within the urinary bladder lumen following gentle saline instillation through the urinary catheter. No sonographic evidence of intravesical entry of the instilled fluid is identified.
CONCLUSION: Negative bladder swirl sign.
RECOMMENDATION: Findings suggest possible malposition, obstruction, kinking, or occlusion of the urinary catheter. Correlate clinically and consider catheter repositioning, flushing, or replacement as indicated.

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Bladder Lumen: Adequately distended or partially distended urinary bladder.
Catheter Tip / Balloon: Catheter balloon/tip may be visualized within or adjacent to the bladder; position should be carefully assessed.
Swirling Echoes: No mobile echogenic swirling echoes are seen within the bladder lumen following gentle saline injection through the urinary catheter.
Color Doppler: Not mandatory; grayscale real-time visualization is usually sufficient.
Perivesical Region: Evaluate for possible extravesical fluid collection if catheter malposition or leakage is suspected.
Key Diagnostic Clue: Absence of echogenic swirling movement inside the bladder after saline flush suggests that the instilled fluid is not entering the bladder lumen, raising suspicion of catheter malposition, obstruction, kinking, or occlusion.

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Short Report Line:
Negative bladder swirl sign is noted following saline instillation through the urinary catheter, suggesting absent intravesical flow of instilled saline. Correlate with catheter position and patency.

Detailed Report Line:
Real-time ultrasound demonstrates no mobile echogenic swirling turbulence within the urinary bladder lumen following gentle saline instillation through the Foley catheter. The catheter balloon/tip position should be carefully evaluated. No definite intravesical entry of the instilled saline is demonstrated. Findings are suspicious for catheter malposition, obstruction, kinking, or occlusion. Clinical correlation with catheter assessment and repositioning or replacement is recommended.

Technique / Evaluation of Negative Bladder Swirl Sign:

1. Scan the suprapubic region in transverse and longitudinal planes.
2. Confirm adequate bladder filling and identify the urinary bladder lumen and catheter balloon/tip if visible.
3. Attach a sterile saline syringe to the catheter sampling/irrigation port according to local protocol.
4. Gently instill a small amount of sterile saline while continuously observing the bladder in real time.
5. If no mobile echogenic swirling echoes are seen within the bladder lumen, document a negative bladder swirl sign.
6. Assess the catheter balloon/tip position for possible malposition or incomplete intravesical placement.
7. Exclude common causes of a false-negative study such as an underdistended bladder, catheter obstruction, kinking, poor acoustic window, or inadequate saline instillation.
8. Evaluate the perivesical region for possible extravesical saline leakage if catheter perforation or malposition is suspected.
9. Correlate with urine drainage, catheter function, and the patient's clinical status.
10. If uncertainty remains, reposition or flush the catheter, repeat the ultrasound examination, or replace the catheter as clinically indicated.

Differential / Causes of Negative Bladder Swirl Sign:

Catheter Malposition:
FINDINGS: Catheter balloon is not confidently visualized within the urinary bladder lumen. No intravesical swirling echoes are seen following saline instillation. The bladder may remain distended.
CONCLUSION: Findings are suspicious for incorrect catheter position.
RECOMMENDATION: Reassess catheter position and reposition or replace the catheter if clinically indicated.

Blocked or Kinked Catheter:
FINDINGS: Distended urinary bladder with absent intravesical swirling echoes during saline flush and poor urine drainage.
CONCLUSION: Findings suggest catheter obstruction or kinking.
RECOMMENDATION: Flush the catheter if appropriate or replace the catheter. Consider urology consultation if obstruction persists.

Extravesical Catheter / False Passage:
FINDINGS: No intravesical swirling echoes are identified. Catheter balloon may lie outside the bladder with possible perivesical fluid collection.
CONCLUSION: Extravesical catheter position or urethral injury cannot be excluded.
RECOMMENDATION: Stop further forceful instillation and obtain urgent clinical and urological assessment.

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Key Point: Absence of intravesical swirling after saline instillation should prompt evaluation for catheter malposition, obstruction, inadequate bladder filling, poor acoustic window, or technical factors before concluding catheter malfunction.

Important Reporting Points — Negative Bladder Swirl Sign:

1. Mention bladder distension status.
2. Describe catheter balloon/tip position if visualized.
3. State that saline instillation was performed under real-time ultrasound guidance.
4. Clearly document absence of intravesical swirling echoes.
5. Comment on possible catheter obstruction, kinking, or malposition if suspected.
6. Mention presence or absence of extravesical fluid collection.
7. Describe any bladder wall abnormality, clot, debris, or calculus.
8. Mention residual bladder distension if clinically relevant.
9. State any limitation such as underfilled bladder, bowel gas, obesity, or poor acoustic window.
10. Recommend catheter reassessment or replacement if findings remain suspicious.

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FINDINGS:
Urinary bladder is visualized on suprapubic ultrasound. Following gentle saline instillation through the Foley catheter, no mobile echogenic swirling echoes are demonstrated within the bladder lumen. Catheter balloon/tip position should be carefully assessed. No definite intravesical entry of instilled saline is demonstrated. No significant extravesical fluid collection is identified unless otherwise described.

IMPRESSION:
Negative bladder swirl sign. Findings are suspicious for catheter malposition, obstruction, kinking, or non-functioning catheter. Correlate clinically.

RECOMMENDATION:
Assess catheter position and patency. Consider flushing, repositioning, replacement, or urological review as clinically indicated.

LIMITATION:
Assessment may be limited by inadequate bladder distension, bowel gas, obesity, patient discomfort, or suboptimal visualization of the catheter balloon/tip.

Case Study

Patient: Adult patient with poor urine drainage despite Foley catheter placement.

Ultrasound Findings: Urinary bladder is moderately distended. Following gentle saline instillation through the Foley catheter, no echogenic swirling echoes are visualized within the bladder lumen. Catheter balloon is not confidently identified within the bladder. No definite intravesical saline flow is demonstrated.

Diagnosis: Negative Bladder Swirl Sign.

Teaching Point: A negative bladder swirl sign does not by itself establish catheter failure, but it should prompt evaluation for catheter malposition, obstruction, kinking, inadequate bladder filling, or technical limitations. Clinical correlation and repeat assessment after catheter repositioning or replacement may be required.

SonoAcademy Digital MCQ Examination

Topic: Positive Bladder Swirl Sign

Total Questions: 10 | Total Marks: 10 | Time: 30 Minutes

Instruction: Enter your details, start the exam, answer all questions, and download your PDF marksheet after submission.

Time Left: 30:00

1. What does a negative bladder swirl sign indicate? A. Saline is not entering the bladder lumen B. Normal renal cortex C. Gallbladder stone D. Pleural effusion

2. Negative bladder swirl sign is demonstrated when: A. No swirling echoes are seen after saline instillation B. Swirling echoes fill the bladder C. Doppler aliasing appears D. Contrast is injected intravenously

3. The commonest cause of a negative bladder swirl sign is: A. Catheter obstruction or malposition B. Liver cyst C. Splenic infarction D. Pneumothorax

4. During ultrasound you should evaluate: A. Catheter balloon/tip position B. Thyroid gland only C. Patella D. Lens of the eye

5. Absence of swirling echoes should prompt assessment for: A. Catheter blockage, kinking, or malposition B. Fatty liver C. Otitis media D. Cataract

6. Which additional finding should be assessed? A. Extravesical fluid collection B. Dental caries C. Sinusitis D. Retinal detachment

7. Best imaging method is: A. Real-time suprapubic ultrasound B. Chest radiograph C. ECG D. Mammography

8. A negative bladder swirl sign suggests: A. Catheter patency is not confirmed B. Normal Foley catheter function is confirmed C. Acute appendicitis D. Cholelithiasis

9. A false-negative examination may occur because of: A. Poor bladder distension or technical limitations B. Hair colour C. Blood group D. Height

10. Appropriate impression is: A. Negative bladder swirl sign requiring catheter assessment B. Acute pancreatitis C. Pulmonary edema D. Renal angiomyolipoma

Exam Result

Name:

Email / Mobile:

Topic: Positive Bladder Swirl Sign

Total Marks: 10

Obtained Marks:

Percentage: %

Status:

📄 SonoAcademy

Positive
Bladder Swirl Sign

Ultrasound confirmation of correct urinary Foley catheter position and catheter patency

🫧

Swirl Sign

💧

Saline Test

📄

USG Report

USG

Positive Bladder Swirl Sign refers to visualization of mobile echogenic swirling echoes or turbulence within the urinary bladder lumen during real-time ultrasound after gentle saline instillation through a urinary catheter. It helps confirm that the catheter tip is correctly placed inside the bladder and that the catheter is patent.

Ultrasound Features of Positive Bladder Swirl Sign:

Main Finding:
FINDINGS: Real-time ultrasound demonstrates mobile echogenic swirling echoes within the urinary bladder lumen following gentle saline instillation through the urinary catheter. The finding confirms intravesical entry of instilled fluid.
CONCLUSION: Positive bladder swirl sign.
RECOMMENDATION: Correct catheter position and catheter patency are confirmed sonographically.

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Bladder Lumen: Adequately distended or partially distended urinary bladder.
Catheter Tip / Balloon: Catheter balloon may be visualized within the bladder lumen when adequately inflated.
Swirling Echoes: Mobile echogenic turbulence appears immediately after saline injection.
Color Doppler: Not mandatory; grayscale real-time visualization is usually sufficient.
Perivesical Region: No extravesical fluid collection should be seen.
Key Diagnostic Clue: Echogenic swirling movement inside bladder after saline flush confirms catheter communication with bladder lumen.

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Short Report Line:
Positive bladder swirl sign is seen following saline instillation through the urinary catheter, confirming correct intravesical catheter position and catheter patency.

Detailed Report Line:
Real-time ultrasound demonstrates mobile echogenic swirling turbulence within the urinary bladder lumen following gentle saline instillation through the Foley catheter. The catheter balloon/tip is seen within the bladder lumen. No extravesical fluid collection is identified. Findings confirm correct intravesical catheter placement and catheter patency.

Technique / How to Demonstrate Bladder Swirl Sign:

1. Scan suprapubic region in transverse and longitudinal planes.
2. Identify urinary bladder lumen and catheter balloon if visible.
3. Attach sterile saline syringe to catheter sampling/irrigation port as per local protocol.
4. Gently instill small amount of sterile saline while observing bladder in real time.
5. Look for mobile echogenic swirling echoes within bladder lumen.
6. Positive sign means saline is entering bladder through the catheter.
7. Absence of swirl may suggest obstruction, malposition, kink, empty bladder, poor acoustic window, or technical failure.
8. Avoid excessive pressure during saline instillation.
9. Correlate with urine drainage, clinical status, and catheter function.
10. If doubt persists, repeat scan after repositioning or clinical catheter check.

Differential / Don’t Miss:

Catheter Malposition:
FINDINGS: Catheter balloon may not be visualized within bladder lumen. No intravesical swirl is seen after saline instillation. Bladder may remain distended despite catheter placement.
CONCLUSION: Findings may suggest catheter malposition or non-functioning catheter.
RECOMMENDATION: Clinical catheter reassessment/repositioning is advised.

Blocked Catheter:
FINDINGS: Bladder is distended with absent or poor urine drainage. No clear intravesical swirling echoes are seen during saline flush.
CONCLUSION: Possibility of catheter blockage/kinking should be considered.
RECOMMENDATION: Catheter flushing, replacement, or urology review may be required depending on clinical condition.

Extravesical Fluid / Suspected False Passage:
FINDINGS: Fluid is seen outside the bladder or catheter balloon is not confidently intravesical. Intravesical swirl is absent or equivocal.
CONCLUSION: Extravesical catheter position or urethral injury cannot be excluded.
RECOMMENDATION: Stop forceful instillation and obtain urgent clinical/urology correlation.

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Key Point: Positive intravesical swirl + catheter balloon/tip within bladder + no extravesical fluid strongly supports correct catheter placement.

Important Reporting Points — Don’t Miss Anything:

1. Mention bladder distension status.
2. Mention catheter balloon/tip position if visible.
3. Mention saline instillation was performed under real-time ultrasound.
4. State whether intravesical swirling echoes are present or absent.
5. Confirm catheter patency when swirl is positive.
6. Mention absence of extravesical fluid collection.
7. Mention bladder wall abnormality, clot, debris, or stone if seen.
8. Mention residual urine/bladder distension if clinically relevant.
9. Mention limitation if bowel gas, obesity, empty bladder, or poor window affects assessment.
10. Recommend clinical catheter correlation if findings are equivocal.

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FINDINGS:
Urinary bladder is visualized on suprapubic ultrasound. Foley catheter balloon/tip is seen within the bladder lumen. On gentle saline instillation through the urinary catheter, mobile echogenic swirling echoes are demonstrated within the bladder lumen, consistent with a positive bladder swirl sign. No extravesical fluid collection is identified.

IMPRESSION:
Positive bladder swirl sign, confirming correct intravesical urinary catheter position and catheter patency.

RECOMMENDATION:
No immediate catheter repositioning is required based on ultrasound findings. Clinical correlation with urine drainage is advised.

LIMITATION:
Assessment may be limited by poor bladder distension, bowel gas, obesity, patient discomfort, or inability to adequately visualize the catheter balloon/tip.

Case Study

Patient: Adult patient with poor urine drainage after Foley catheter placement.

Ultrasound Findings: Urinary bladder is visualized. Foley catheter balloon is seen within the bladder lumen. Following gentle saline instillation through the catheter, mobile echogenic swirling echoes are seen within the bladder lumen. No extravesical fluid collection is noted.

Diagnosis: Positive Bladder Swirl Sign.

Teaching Point: Real-time visualization of intravesical saline swirl confirms catheter communication with the urinary bladder and supports correct catheter placement.

SonoAcademy Digital MCQ Examination

Topic: Positive Bladder Swirl Sign

Total Questions: 10 | Total Marks: 10 | Time: 30 Minutes

Instruction: Enter your details, start the exam, answer all questions, and download your PDF marksheet after submission.

Time Left: 30:00

1. What does positive bladder swirl sign confirm? A. Correct catheter communication with bladder lumen B. Renal stone C. Appendicitis D. Gallbladder polyp

2. Swirl sign is produced after: A. Gentle saline instillation through catheter B. Oral contrast C. IV contrast only D. Deep inspiration

3. Positive sign appears as: A. Mobile echogenic swirling echoes in bladder B. Lung comet tail C. Bowel peristalsis D. Liver calcification

4. Important structure to identify is: A. Catheter balloon/tip inside bladder B. Appendix only C. Thyroid lobe D. Spleen

5. Absence of swirl may suggest: A. Catheter blockage or malposition B. Normal pregnancy C. Pneumonia D. Fatty liver

6. Don’t miss finding is: A. Extravesical fluid collection B. Cataract C. Sinusitis D. Otitis media

7. Best imaging approach is: A. Real-time suprapubic ultrasound B. Chest X-ray only C. ECG only D. Fundus exam

8. Positive sign supports: A. Catheter patency B. Bone fracture C. Brain infarct D. Dental caries

9. Limitation includes: A. Poor bladder distension or bowel gas B. Hair color C. Eye color D. Shoe size

10. Correct impression is: A. Positive bladder swirl sign confirming correct intravesical catheter position B. Acute cholecystitis C. Pleural effusion D. Renal artery stenosis

Exam Result

Name:

Email / Mobile:

Topic: Positive Bladder Swirl Sign

Total Marks: 10

Obtained Marks:

Percentage: %

Status:

Polycystic Ovary Syndrome (PCOS/PCOD)

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PCOS/PCOD
Polycystic Ovary Syndrome

Understanding the Ultrasound Appearance of a PCOS.

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Reporting Panal

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Ovarys Pathology

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Case Study

PCOD

Polycystic Ovary Syndrome / Polycystic Ovarian Disease (PCOS / PCOD) is a common endocrine disorder in reproductive-age females. It is associated with chronic anovulation, menstrual irregularity, hyperandrogenism, infertility, obesity, insulin resistance, and characteristic polycystic ovarian morphology on ultrasound. Imaging helps assess ovarian morphology, ovarian volume, follicle number, stromal echogenicity, endometrial thickness, and exclude other adnexal pathology.

Ultrasound Features of PCOS / PCOD:

Ovarian Volume:
FINDINGS: One or both ovaries may be enlarged. Ovarian volume greater than 10 mL supports polycystic ovarian morphology. The ovary may appear bulky with increased central stromal component.
CONCLUSION: Enlarged ovarian volume supports PCOS / PCOD morphology.
RECOMMENDATION: Correlation with clinical history, menstrual pattern, and hormonal profile is advised.

Multiple Small Follicles:
FINDINGS: Multiple small follicles are seen in the ovary, commonly measuring 2–9 mm. Follicles may be arranged peripherally or scattered throughout the ovarian parenchyma.
CONCLUSION: Multiple small ovarian follicles are suggestive of polycystic ovarian morphology.
RECOMMENDATION: Clinical and biochemical correlation is recommended before labeling PCOS.

String of Pearls Appearance:
FINDINGS: Multiple small follicles are arranged along the ovarian periphery, producing a characteristic “string of pearls” appearance. Central ovarian stroma may appear prominent and echogenic.
CONCLUSION: Ultrasound appearance is consistent with polycystic ovarian morphology.
RECOMMENDATION: Correlate with menstrual irregularity, hyperandrogenism, and endocrine profile.

Ovarian Stroma:
FINDINGS: Increased central stromal echogenicity and stromal volume may be seen. The stromal component may appear relatively more prominent than follicles.
CONCLUSION: Prominent echogenic ovarian stroma supports PCOS / PCOD morphology.
RECOMMENDATION: Endocrine evaluation is advised.

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Typical Ultrasound Criteria:
1. Ovarian volume greater than 10 mL in one or both ovaries.
2. Multiple small follicles, usually 2–9 mm in size.
3. Peripheral follicular distribution may produce “string of pearls” appearance.
4. Increased central stromal echogenicity and stromal volume may be present.

Color Doppler: May show mildly increased stromal vascularity in some cases.
Endometrium: Endometrial thickness varies with menstrual cycle; prolonged anovulation may cause endometrial thickening.
Adnexa: No adnexal mass should be seen in uncomplicated PCOS / PCOD.
Free Fluid: Usually absent.

Finding: Both ovaries are mildly enlarged with multiple small peripheral follicles measuring approximately 2–9 mm. Increased central stromal echogenicity is noted. No adnexal mass or free fluid is seen.

Impression: Bilateral polycystic ovarian morphology suggestive of PCOS / PCOD. Clinical and hormonal correlation is advised.

Recommendation: Correlation with menstrual history, clinical evidence of hyperandrogenism, serum LH/FSH, testosterone, prolactin, TSH, fasting insulin/glucose profile, and gynecological consultation is advised.

Limitation: Ultrasound findings alone do not establish the diagnosis of PCOS. Clinical and laboratory correlation is essential.

Differential Diagnosis / Mimics:

Multifollicular Ovaries:
FINDINGS: Multiple follicles are present, usually without marked stromal hypertrophy or classic peripheral distribution.
CONCLUSION: May mimic PCOS but commonly occurs in puberty, recovery from hypothalamic amenorrhea, or temporary hormonal imbalance.
RECOMMENDATION: Clinical and hormonal correlation is advised.

Ovarian Hyperstimulation:
FINDINGS: Bilateral enlarged ovaries with multiple cystic follicles may be seen, usually following ovulation induction treatment.
CONCLUSION: Findings may mimic PCOS but clinical history of fertility treatment is the key clue.
RECOMMENDATION: Gynecological follow-up is advised.

Theca Lutein Cysts:
FINDINGS: Bilateral multiloculated ovarian cystic enlargement may be associated with high beta-hCG states.
CONCLUSION: Consider in pregnancy, molar pregnancy, or trophoblastic disease.
RECOMMENDATION: Beta-hCG correlation is advised.

Androgen-Secreting Ovarian Tumor:
FINDINGS: A solid ovarian mass or focal ovarian lesion may be seen with marked clinical hyperandrogenism.
CONCLUSION: Should be considered when symptoms are severe, rapidly progressive, or imaging shows a focal mass.
RECOMMENDATION: Further evaluation with MRI and hormonal workup is advised.

Key Point: PCOS diagnosis requires clinical, biochemical, and ultrasound correlation. Polycystic ovarian morphology alone is not equal to PCOS.

MRI Features of PCOS / PCOD:

Ovarian Size: Bilateral ovarian enlargement may be present.
Follicles: Multiple small peripheral follicles are seen in the ovarian cortex.
Stroma: Increased central stromal volume with low to intermediate signal intensity may be seen.
T2-Weighted Imaging: Multiple small hyperintense follicles with relatively hypointense central stroma.
T1-Weighted Imaging: Usually no hemorrhagic component unless associated pathology is present.
Post-Contrast Imaging: Ovarian stroma may enhance; no suspicious solid mass should be present.
Associated Findings: Endometrial thickening may be seen in prolonged anovulation.
Key Diagnostic Clue: Bilateral enlarged ovaries with multiple small follicles and increased central stromal volume.

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Finding: MRI pelvis shows bilateral mildly enlarged ovaries with multiple small peripheral follicles and prominent central ovarian stroma. No suspicious adnexal mass is identified.

Impression: MRI features are suggestive of bilateral polycystic ovarian morphology.

Recommendation: Clinical and biochemical correlation is advised for diagnosis of PCOS.

Limitation: MRI is not routinely required for typical PCOS and is mainly useful when ultrasound is inconclusive or a mass is suspected.

CECT Features of PCOS / PCOD:

Role of CT: CT is not the preferred imaging modality for PCOS / PCOD.
Ovarian Size: Ovaries may appear mildly enlarged bilaterally.
Follicles: Multiple small follicles may be difficult to characterize accurately on CT compared with ultrasound or MRI.
Stroma: Stromal assessment is limited on CT.
Associated Findings: CT may incidentally show bulky ovaries or exclude other pelvic pathology.
Key Diagnostic Clue: CT is usually not diagnostic; ultrasound is preferred.

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Finding: CT pelvis may show mildly bulky bilateral ovaries; however, follicular morphology and stromal details are better assessed on pelvic ultrasound.

Impression: CT is not the imaging modality of choice for PCOS / PCOD. Ultrasound correlation is recommended.

Recommendation: Pelvic ultrasound and hormonal correlation are advised.

Limitation: CT has limited sensitivity for follicle count and ovarian stromal assessment.

Pathology / Pathophysiology Features of PCOS / PCOD:

Nature: Endocrine-metabolic disorder affecting ovarian function.
Ovulation: Chronic anovulation or oligo-ovulation is common.
Hormonal Pattern: Hyperandrogenism may be present clinically or biochemically.
Follicles: Multiple arrested follicles may be seen in the ovary.
Stroma: Ovarian stromal hypertrophy and increased stromal activity may occur.
Metabolic Association: Insulin resistance, obesity, dyslipidemia, and increased diabetes risk may be associated.
Endometrium: Long-standing anovulation may increase risk of endometrial hyperplasia.
Key Diagnostic Clue: Combination of menstrual irregularity, hyperandrogenism, and polycystic ovarian morphology.

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Finding: PCOS represents an endocrine-metabolic ovarian disorder characterized by chronic ovulatory dysfunction, hyperandrogenism, and polycystic ovarian morphology.

Impression: Clinical diagnosis supported by imaging and laboratory findings.

Recommendation: Gynecological and endocrine evaluation is advised.

Limitation: Histopathology is not required for routine diagnosis of PCOS.

Important Reporting Points:

1. Mention uterus size, shape, and myometrial echotexture.
2. Measure endometrial thickness and correlate with menstrual cycle day.
3. Mention right ovarian size and volume.
4. Mention left ovarian size and volume.
5. Describe follicle number and size range.
6. Mention peripheral follicular arrangement if present.
7. Describe ovarian stromal echogenicity and stromal prominence.
8. Comment on adnexal mass if present or absent.
9. Mention presence or absence of free fluid in pouch of Douglas.
10. Add that ultrasound findings need clinical and hormonal correlation.

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Short Report Template:

FINDINGS:
Uterus is normal in size and echotexture. Endometrial thickness measures ____ mm. Both ovaries are mildly enlarged. Right ovary measures ____ × ____ × ____ cm with volume of ____ mL. Left ovary measures ____ × ____ × ____ cm with volume of ____ mL. Multiple small peripheral follicles measuring 2–9 mm are seen in both ovaries with increased central stromal echogenicity. No adnexal mass or free fluid is seen.

IMPRESSION:
Bilateral polycystic ovarian morphology suggestive of PCOS / PCOD. Clinical and hormonal correlation is recommended.

Case Study

Patient: 24-year-old female with irregular menstrual cycles, acne, and weight gain.

Ultrasound Findings: Uterus is normal in size. Endometrial thickness measures 8 mm. Both ovaries are mildly enlarged with multiple small peripheral follicles measuring 2–9 mm. Increased central stromal echogenicity is noted bilaterally. No adnexal mass or free fluid is seen.

MRI Findings: Bilateral enlarged ovaries with multiple peripheral follicles and prominent central stroma. No suspicious adnexal mass.

Diagnosis: Bilateral polycystic ovarian morphology suggestive of PCOS / PCOD.

Teaching Point: Ultrasound supports the diagnosis but PCOS should be diagnosed only after clinical and biochemical correlation.

Video Explanation

SonoAcademy Digital MCQ Examination

Topic: PCOS / PCOD — Polycystic Ovary Syndrome

Total Questions: 10 | Total Marks: 10 | Time: 30 Minutes

Instruction: Enter your details, start the exam, answer all questions, and download your PDF marksheet after submission.

Time Left: 30:00

1. PCOS / PCOD commonly affects which group? A. Reproductive-age females B. Elderly males only C. Newborn males only D. Postmortem cases only

2. Typical ultrasound finding in PCOS is: A. Multiple small ovarian follicles B. Renal stone C. Gallbladder polyp D. Lung collapse

3. The common follicle size range in PCOS morphology is: A. 2–9 mm B. 5–10 cm C. 20–30 cm D. 1 meter

4. Ovarian volume supporting PCOS morphology is usually: A. Greater than 10 mL B. Less than 1 mL only C. Exactly 100 mL always D. Not measured

5. Peripheral follicular arrangement is called: A. String of pearls appearance B. Double duct sign C. Comet-tail artifact D. Target sign of bowel

6. PCOS diagnosis should be correlated with: A. Clinical and hormonal findings B. Shoe size only C. Hair color only D. Eye color only

7. Which symptom is commonly associated with PCOS? A. Irregular menstrual cycles B. Ear discharge only C. Tooth pain only D. Nasal fracture only

8. Which is an important reporting point? A. Ovarian volume and follicle number B. Lung volume only C. Teeth count D. Finger length

9. CT in PCOS is: A. Not the preferred modality B. Always mandatory C. Better than ultrasound for follicle count D. Used for every patient

10. Ultrasound alone: A. Does not establish PCOS diagnosis without clinical correlation B. Always confirms PCOS in every case C. Replaces all blood tests always D. Is not useful at all

Exam Result

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Topic: PCOS / PCOD — Polycystic Ovary Syndrome

Total Marks: 10

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