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Echo Ultimate Exam
Question 1. Which ultrasound frequency provides the greatest axial resolution for cardiac imaging? A) 2 MHz B) 3 MHz C) 5 MHz D) 8 MHz Answer: D Explanation: Higher frequency (8 MHz) shortens wavelength, improving axial resolution, though penetration is reduced; 8 MHz is commonly used for adult transthoracic echo. Question 2. In tissue interaction, which phenomenon primarily causes loss of signal intensity with depth? A) Reflection B) Refraction C) Scattering D) Attenuation Answer: D Explanation: Attenuation (absorption + scattering) reduces beam intensity as it travels deeper, decreasing signal amplitude. Question 3. The piezoelectric effect in an ultrasound transducer converts:** A) Electrical energy into magnetic fields B) Mechanical stress into electrical voltage C) Electrical voltage into mechanical vibration D) Light energy into sound waves Answer: C Explanation: Applying voltage causes the piezoelectric crystal to vibrate, generating acoustic waves; the reverse produces echo signals. Question 4. Which Doppler mode measures high velocities across aortic stenosis without aliasing? A) Pulsed-wave Doppler B) Continuous-wave Doppler
Echo Ultimate Exam
C) Color flow mapping D) Tissue Doppler imaging Answer: B Explanation: CW Doppler records the entire depth simultaneously, allowing unlimited velocity range, essential for severe AS. Question 5. The Nyquist limit in color Doppler is determined by:** A) Frame rate only B) Pulse repetition frequency (PRF) only C) Both PRF and wall filter settings D) Transducer frequency only Answer: B Explanation: Nyquist limit = PRF/2; increasing PRF raises the limit, reducing aliasing but may increase noise. Question 6. Which artifact is most likely to obscure the posterior wall of the left ventricle? A) Reverberation B) Side-lobe artifact C) Acoustic shadowing D) Mirror image artifact Answer: C Explanation: Dense structures (e.g., ribs, calcified valve) block the beam, creating a shadow that hides deeper structures. Question 7. Time-gain compensation (TGC) is used to:** A) Adjust overall gain for the whole image B) Compensate for depth-dependent attenuation C) Increase frame rate D) Reduce side-lobe artifacts Answer: B Explanation: TGC applies variable gain at specific depths, counteracting attenuation and producing uniform brightness.
Echo Ultimate Exam
B) Tracing endocardial borders in apical 4- and 2-chamber views C) Using M-mode linear dimensions only D) Applying Doppler velocity-time integrals Answer: B Explanation: Simpson’s method integrates traced areas from two orthogonal apical views to estimate LV volume and EF. Question 12. Fractional shortening is derived from:** A) M-mode LV internal diameters only B) 2-D volumetric measurements C) Tissue Doppler velocities D) Color Doppler jet width Answer: A Explanation: FS = (LVIDd – LVIDs)/LVIDd × 100 % using M-mode linear dimensions. Question 13. In the 17-segment LV model, which segment is supplied mainly by the left anterior descending (LAD) artery? A) Basal inferior B) Mid-septal C) Apical lateral D) Basal posterior Answer: B Explanation: The mid-septal segment lies in the anterior wall territory of the LAD. Question 14. An E/A ratio >2 with a deceleration time <150 ms most likely indicates:** A) Normal diastolic function B) Grade I (impaired relaxation) C) Pseudonormal filling D) Restrictive filling pattern Answer: D
Echo Ultimate Exam
Explanation: High E, low A, rapid deceleration characterize restrictive diastology. Question 15. Tissue Doppler e′ velocity measured at the septal mitral annulus is primarily used to assess:** A) Systolic function B) Diastolic relaxation C) Pulmonary pressures D) Valve regurgitation severity Answer: B Explanation: e′ reflects early diastolic myocardial relaxation, relatively load-independent. Question 16. The continuity equation for aortic valve area requires measurement of:** A) LV outflow tract (LVOT) diameter, LVOT VTI, and aortic VTI B) Aortic root diameter only C) Mitral inflow E-wave velocity only D) Pulmonary artery pressure Answer: A Explanation: AVA = (LVOT area × LVOT VTI) / Aortic VTI, applying conservation of flow. Question 17. A pressure half-time (PHT) of 200 ms in mitral stenosis corresponds to an approximate valve area of:** A) 1.5 cm² B) 2.5 cm² C) 3.5 cm² D) 5.0 cm² Answer: A Explanation: Mitral valve area ≈ 220 / PHT; 220/200 = 1.1 cm² (severe). Closest answer 1.5 cm². Question 18. The vena contracta width is most accurate for grading:**
Echo Ultimate Exam
Explanation: A late-systolic “dagger” signal reflects systolic anterior motion (SAM) causing dynamic obstruction. Question 22. The “septal bounce” on echocardiography is most indicative of:** A) Hypertrophic cardiomyopathy B) Constrictive pericarditis C) Dilated cardiomyopathy D) Acute myocardial infarction Answer: B Explanation: Septal bounce (abrupt early diastolic motion) results from rapid ventricular filling against a non-compliant pericardium. Question 23. Which view best demonstrates a pericardial effusion posterior to the left atrium? A) Parasternal long-axis B) Parasternal short-axis at the mitral level C) Apical 4-chamber D) Subcostal 4-chamber Answer: D Explanation: The subcostal view aligns the probe inferiorly, allowing visualization of fluid in the posterior pericardial space. Question 24. The “swinging heart” sign on echo suggests:** A) Massive pericardial effusion with tamponade physiology B) Severe LV dilation C) Right ventricular hypertrophy D) Aortic dissection Answer: A Explanation: In large effusions, the heart freely moves within the fluid, producing a “swinging” appearance. Question 25. An intimal flap seen in the ascending aorta on TTE is most consistent with:**
Echo Ultimate Exam
A) Aortic coarctation B) Aortic dissection C) Atherosclerotic plaque D) Patent ductus arteriosus Answer: B Explanation: An intimal flap separating true and false lumens is the hallmark of aortic dissection. Question 26. In a patient with a mechanical aortic prosthesis, which Doppler pattern indicates normal function?** A) Low-velocity, monophasic forward flow only B) High-velocity, narrow CW jet with normal pressure gradient C) Bidirectional flow in the prosthetic valve orifice D) Significant diastolic flow reversal in the descending aorta Answer: B Explanation: Mechanical valves generate high-velocity, narrow CW jets; normal gradients are low-to-moderate. Question 27. A mobile, irregular mass attached to the atrial side of the mitral valve leaflets most likely represents:** A) Myxoma B) Thrombus C) Vegetation D) Lambl’s excrescences Answer: C Explanation: Infective endocarditis produces vegetations on valve surfaces; they are mobile and irregular. Question 28. The most reliable echocardiographic criterion for diagnosing a bicuspid aortic valve is:** A) Systolic doming of the valve leaflets B) Raphe visualized on systolic short-axis view C) Diastolic opening of three cusps
Echo Ultimate Exam
Question 32. Which parameter is most predictive of adverse outcome in severe aortic stenosis?** A) Aortic valve area <1.0 cm² B) Peak velocity >4 m/s C) Mean gradient >40 mmHg D) Presence of paradoxical low-flow, low-gradient AS with reduced EF Answer: D Explanation: Low-flow, low-gradient AS with reduced EF carries higher mortality despite “moderate” gradients. Question 33. The “McConnell’s sign” on echo is most specific for:** A) Acute right ventricular infarction B) Massive pulmonary embolism C) Chronic pulmonary hypertension D) Tricuspid regurgitation Answer: B Explanation: Regional RV free-wall hypokinesis with preserved apical motion is characteristic of massive PE. Question 34. In assessing LV diastolic function, an E/e′ ratio >15 suggests:** A) Normal filling pressures B) Elevated LV filling pressures C) Pseudonormalization D) Restrictive physiology only Answer: B Explanation: High E/e′ correlates with increased left atrial pressure and LV filling pressures. Question 35. Which imaging plane is optimal for measuring the aortic annulus for transcatheter aortic valve implantation (TAVI) planning?** A) Parasternal short-axis at the level of the aortic valve B) Apical 5-chamber view
Echo Ultimate Exam
C) Subcostal long-axis view D) Suprasternal notch view Answer: A Explanation: The short-axis view provides a true cross-section of the annulus for accurate diameter measurement. Question 36. A pericardial effusion measuring 2 cm in diastole with right atrial collapse >30 % is indicative of:** A) Small, hemodynamically insignificant effusion B) Early tamponade physiology C) Chronic constrictive pericarditis D) Normal variant in athletes Answer: B Explanation: RA collapse >30 % during diastole is a key sign of cardiac tamponade. Question 37. The “systolic anterior motion” (SAM) of the mitral valve leaflets can be provoked by:** A) Beta-blocker administration B) Dehydration and reduced preload C) Increased afterload D) Left atrial enlargement Answer: B Explanation: Reduced preload and small LV cavity size accentuate SAM in HCM. Question 38. In a patient with severe mitral regurgitation, which finding on color Doppler most strongly predicts need for surgery?** A) Vena contracta width 0.4 cm B) Regurgitant volume 45 mL/beat C) PISA radius 0.6 cm D) Jet area 15 % of LA size Answer: B
Echo Ultimate Exam
Question 42. Which measurement is essential for calculating the left ventricular mass index?** A) LV end-diastolic volume only B) Interventricular septal thickness, posterior wall thickness, and LV internal diameter in diastole C) Mitral valve annular diameter D) Aortic root diameter Answer: B Explanation: LV mass = 0.8 × [1.04 × (IVSd + LVIDd + PWTd)³ – LVIDd³] + 0.6; indexed to body surface area. Question 43. In a patient with suspected pulmonary hypertension, which echocardiographic parameter best estimates pulmonary artery systolic pressure? ** A) Tricuspid regurgitant jet velocity B) Mitral E-wave velocity C) Aortic valve peak velocity D) Pulmonary artery acceleration time Answer: A Explanation: PASP ≈ 4·(TR peak)^2 + RAP; TR velocity is the primary estimator. Question 44. The “egg-on-a-string” sign on M-mode is characteristic of:** A) Mitral valve prolapse B) Hypertrophic cardiomyopathy C) Restrictive cardiomyopathy D) Aortic stenosis Answer: A Explanation: In MVP, the posterior mitral leaflet prolapses into the left atrium, producing an “egg-on-a-string” motion. Question 45. Which of the following best describes the relationship between ultrasound frequency and tissue penetration?** A) Higher frequency → greater penetration B) Higher frequency → less penetration
Echo Ultimate Exam
C) Frequency does not affect penetration D) Lower frequency → poorer resolution only Answer: B Explanation: Higher frequency waves are attenuated more rapidly, reducing depth of penetration. Question 46. In a patient with a small VSD (≤3 mm) and no symptoms, the most appropriate management is:** A) Immediate surgical closure B) Transcatheter device closure C) Observation with serial echocardiography D) Initiate heart failure therapy Answer: C Explanation: Small, asymptomatic VSDs are managed conservatively with periodic follow-up. Question 47. Which view is optimal for visualizing the aortic arch and its branches?** A) Parasternal short-axis at the aortic valve level B) Subcostal coronal view C) Suprasternal notch view D) Apical 5-chamber view Answer: C Explanation: The suprasternal notch view aligns the transducer to image the aortic arch and its major branches. Question 48. The presence of a “bright, echogenic line” at the pericardial-myocardial interface on TTE is most often due to:** A) Pericardial calcification B) Epicardial fat C) Normal pericardial reflection D) Pericardial effusion Answer: C
Echo Ultimate Exam
Question 52. In a patient with a large atrial myxoma, the most common site of attachment is:** A) Tricuspid valve leaflet B) Interventricular septum C) Left atrial appendage D) Interatrial septum near fossa ovalis Answer: D Explanation: Myxomas typically arise from the atrial septum at the fossa ovalis region. Question 53. Which Doppler setting adjustment reduces aliasing in a high-velocity aortic jet?** A) Decrease wall filter B) Increase PRF (Nyquist limit) C) Reduce gain D) Increase color map scale Answer: B Explanation: Raising PRF raises the Nyquist limit, allowing higher velocities without aliasing. Question 54. The “systolic bulge” of the interventricular septum seen in echocardiography is most characteristic of:** A) Hypertrophic cardiomyopathy B) Right ventricular volume overload C) Left bundle branch block D) Acute myocardial infarction Answer: A Explanation: Asymmetric septal hypertrophy in HCM creates a systolic bulge into the LV outflow tract. Question 55. Which of the following is the most sensitive echocardiographic sign of early cardiac tamponade?** A) Pericardial effusion size >1 cm B) Right ventricular diastolic collapse
Echo Ultimate Exam
C) Left atrial enlargement D) Inferior vena cava dilation without respiratory variation Answer: B Explanation: RV diastolic collapse occurs early due to low intrapericardial pressure, indicating tamponade. Question 56. In the assessment of aortic regurgitation severity, which parameter is least reliable?** A) Regurgitant jet width to LVOT width ratio B) Pressure half-time (PHT) C) Vena contracta width D) Diastolic flow reversal in the descending aorta Answer: B Explanation: PHT is influenced by arterial compliance and is less accurate for AR severity compared to jet width or flow reversal. Question 57. The “paradoxical low-flow, low-gradient” aortic stenosis phenotype occurs in patients with:** A) Preserved LVEF and small AVA B) Reduced LVEF, severe AS, and low stroke volume index C) High cardiac output states D) Bicuspid aortic valve only Answer: B Explanation: Low flow despite low gradient leads to underestimation of severity; reduced LVEF is a key feature. Question 58. In the apical 3-chamber (long-axis) view, which structure is visualized at the level of the aortic valve leaflets?** A) Mitral annulus B) Left atrial appendage C) Aortic root and valve D) Tricuspid valve apparatus Answer: C
Echo Ultimate Exam
Question 62. Which of the following is a characteristic finding in restrictive cardiomyopathy on tissue Doppler imaging?** A) Elevated e′ velocities (>12 cm/s) B) Reduced e′ velocities (<8 cm/s) with preserved s′ C) Markedly reduced s′ velocities only D) Normal e′ but increased a′ velocity Answer: B Explanation: Both systolic (s′) and early diastolic (e′) velocities are reduced due to stiff myocardium. Question 63. The “flow-through” sign on color Doppler through a prosthetic valve indicates:** A) Normal prosthetic function B) Paravalvular leak C) Pannus formation causing obstruction D) Thrombus on leaflets Answer: B Explanation: A continuous, narrow jet surrounding the prosthetic ring suggests a paravalvular leak. Question 64. In the context of aortic dissection, the presence of a “double-lumen” sign on TTE is best described as:** A) Two parallel flow streams in the descending aorta B) An intimal flap separating true and false lumens C) Turbulent flow in the aortic arch D) Normal pulsatile flow pattern Answer: B Explanation: The intimal flap creates two distinct lumens, visualized as a double-lumen. Question 65. Which echocardiographic measurement is most directly related to cardiac output calculation?** A) LV end-diastolic volume (EDV) alone B) Stroke volume derived from LVOT VTI and diameter
Echo Ultimate Exam
C) Mitral regurgitant volume D) Left atrial volume index Answer: B Explanation: Cardiac output = stroke volume (LVOT area × VTI) × heart rate. Question 66. The “saw-tooth” pattern on M-mode of the interventricular septum is indicative of:** A) Constrictive pericarditis B) Right bundle branch block C) Hypertrophic cardiomyopathy with SAM D) Normal sinus rhythm Answer: C Explanation: SAM causes abrupt anterior motion of the septum during systole, producing a saw-tooth appearance. Question 67. Which of the following is the best indicator of severe pulmonary regurgitation on echo?** A) Early diastolic flow reversal in the main pulmonary artery B) Increased pulmonary artery systolic pressure C) Dilated right atrium only D) High-velocity tricuspid regurgitant jet Answer: A Explanation: Early diastolic flow reversal directly shows regurgitant flow back into the RV. Question 68. In a patient with suspected endocarditis, the most specific echocardiographic finding is:** A) Thickened valve leaflets B) Mobile vegetations >10 mm on valve surface C) Mild regurgitation D) Small pericardial effusion Answer: B
