ARDMS Echo Echo Report Interpretation and Quality Assurance 2 — Questions and Answers
Question 1: Which of the following is a potential consequence of inadequate lateral resolution in echocardiography?
- Inability to distinguish two structures side-by-side at the same depth (Correct answer)
- Inability to distinguish two structures at different depths along the beam axis
- Reverberations deep to a strong reflector
- Shadowing behind calcified tissue
Correct answer: Inability to distinguish two structures side-by-side at the same depth
Lateral resolution determines the ability to distinguish two adjacent structures at the same depth; poor lateral resolution merges structures side-by-side.
Question 2: In a standard echocardiogram report, what does 'diastolic dysfunction, Grade II (pseudonormal)' mean?
- Normal myocardial relaxation with low filling pressures
- Impaired relaxation with elevated filling pressures (LA pressure elevated, E/A appears normal 0.8–2.0) (Correct answer)
- Severely restrictive filling with very high filling pressures
- Normal relaxation with borderline LA pressure
Correct answer: Impaired relaxation with elevated filling pressures (LA pressure elevated, E/A appears normal 0.8–2.0)
Grade II (pseudonormal) diastolic dysfunction mimics normal mitral inflow (E/A 0.8–2.0) but has elevated filling pressures, unmasked by tissue Doppler and pulmonary vein analysis.
Question 3: Under ARDMS Echo exam content, 'Instrumentation' includes knowledge of which ultrasound principle?
- Cardiac pharmacology
- Piezoelectric effect and transducer beam characteristics (Correct answer)
- HIPAA privacy law
- Coronary anatomy classification
Correct answer: Piezoelectric effect and transducer beam characteristics
The piezoelectric effect — conversion of electrical energy to sound waves and vice versa — is fundamental to ultrasound transducer function and ARDMS instrumentation content.
Question 4: What is the recommended frame rate for optimal 2D echocardiographic image acquisition?
- 5–10 frames per second
- 50–80 frames per second (Correct answer)
- 150–200 frames per second
- 1–2 frames per second
Correct answer: 50–80 frames per second
A frame rate of 50–80 fps is recommended for 2D echo to capture cardiac motion without sacrificing spatial resolution.
Question 5: Which statement best describes the use of intravenous echocardiographic contrast agents (e.g., Definity, Optison)?
- They are used to enhance Doppler signal strength in high-velocity jets
- They opacify the LV cavity to improve endocardial border definition when ≥2 contiguous segments are not visible on unenhanced images (Correct answer)
- They are used to detect coronary calcification
- They replace saline contrast for shunt detection
Correct answer: They opacify the LV cavity to improve endocardial border definition when ≥2 contiguous segments are not visible on unenhanced images
LV opacification agents are indicated when ≥2 contiguous LV segments are suboptimally visualized, significantly improving endocardial border delineation for volume and EF measurement.
Question 6: A quality assurance (QA) program in an echocardiography lab should include which of the following?
- Daily phantom imaging only
- Ongoing peer review of studies, measurement reproducibility assessment, and protocol compliance monitoring (Correct answer)
- Annual machine calibration without case review
- Review only of studies that resulted in adverse patient outcomes
Correct answer: Ongoing peer review of studies, measurement reproducibility assessment, and protocol compliance monitoring
A comprehensive QA program includes peer review, measurement variability assessment, protocol adherence, turnaround time tracking, and correlation with clinical outcomes.
ARDMS Echo Echo Report Interpretation and Quality Assurance 2
Which of the following is a potential consequence of inadequate lateral resolution in echocardiography?