EACVI Cardiac Computed Tomography
EACVI CARDIAC COMPUTED TOMOGRAPHY (CCT) | COMPLETE EXAM
2026/2027 | QUESTIONS WITH VERIFIED SOLUTIONS - UPDATED
VERSION (PASS GUARANTEE)
EACVI CARDIAC COMPUTED TOMOGRAPHY
1. Dual-source CT improves temporal resolution primarily by:
A. Using two X-ray tube-detector pairs offset by ~90 degrees
B. Increasing detector row count
C. Using dual-energy acquisition
D. Doubling the tube current
2. Which reconstruction technique uses data from approximately a half-rotation of the
gantry?
A. Filtered back projection only
B. Full-scan reconstruction
C. Half-scan (partial angle) reconstruction
D. Multi-segment reconstruction
3. Multi-segment reconstruction improves temporal resolution by:
A. Reducing tube voltage
B. Increasing pitch
C. Using a single heartbeat with wider detector coverage
D. Combining data from multiple heartbeats at the same cardiac phase
4. What is the approximate temporal resolution achievable with dual-source CT using
half-scan reconstruction?
A. 500-600 ms
B. 66-75 ms
C. 300-400 ms
D. 150-200 ms
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, EACVI Cardiac Computed Tomography
5. Spatial resolution in modern cardiac CT scanners is typically in the range of:
A. 5-10 mm
B. 1-2 mm
C. 0.3-0.4 mm
D. 3-5 mm
6. Which detector technology allows a single heartbeat to cover the entire heart in one
axial acquisition?
A. Electron beam CT
B. Dual-source spiral CT
C. Wide-volume (area) detector CT
D. Single-slice helical CT
7. Iterative reconstruction algorithms are primarily used in cardiac CT to:
A. Reduce image noise and radiation dose
B. Increase spatial resolution beyond detector limits
C. Increase temporal resolution
D. Eliminate the need for ECG gating
8. What does 'pitch' refer to in helical CT acquisition?
A. Gantry rotation speed
B. Table movement per gantry rotation relative to beam collimation width
C. Number of detector rows activated
D. X-ray tube voltage
9. A low pitch value in helical cardiac CT acquisition results in:
A. Decreased radiation dose
B. Reduced image quality
C. Increased radiation dose due to overlapping data acquisition
D. Faster table movement
10. Which of the following best describes 'flying focal spot' technology?
A. A contrast injection technique
B. A dose modulation algorithm
C. Rapid deflection of the electron beam to double angular/z-sampling
D. A method of ECG gating
11. The Hounsfield unit of water is defined as:
A. +1000
B. 0
C. -1000
D. +100
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, EACVI Cardiac Computed Tomography
12. Which of the following increases spatial resolution in cardiac CT?
A. Longer gantry rotation time
B. Higher pitch
C. Lower tube current
D. Smaller detector element size
13. What is the main advantage of a wider z-axis detector coverage (e.g., 16 cm)?
A. Improved contrast resolution
B. Ability to image the entire heart in a single heartbeat, reducing stair-step
artifact
C. Reduced tube heat load
D. Elimination of beam hardening artifact
14. Beam hardening artifact in cardiac CT is caused by:
A. Incorrect ECG triggering
B. Preferential attenuation of lower-energy photons as the beam passes through
dense material
C. Motion of the coronary arteries
D. Low contrast concentration
15. Dual-energy CT acquisition allows for which additional capability compared to single-
energy CT?
A. Material decomposition and virtual monochromatic imaging
B. Reduced need for contrast media entirely
C. Faster gantry rotation
D. Elimination of ECG gating requirement
16. What is the typical gantry rotation time range for modern cardiac CT scanners?
A. 1.0-2.0 seconds
B. 0.23-0.35 seconds
C. 0.5-1.0 seconds
D. 2.0-3.0 seconds
17. Which artifact results from insufficient sampling of rapidly moving structures relative
to gantry speed?
A. Motion (blurring/stair-step) artifact
B. Partial volume artifact
C. Ring artifact
D. Beam hardening artifact
18. Photon-counting detector CT differs from conventional energy-integrating detector CT
by:
A. Directly counting individual photons and measuring their energy
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, EACVI Cardiac Computed Tomography
B. Requiring no post-processing software
C. Eliminating the need for a gantry
D. Using a single tube-detector pair only
19. Which acquisition mode generally delivers the lowest radiation dose for coronary
CTA?
A. Prospective ECG-triggered axial (step-and-shoot)
B. Retrospective ECG-gated helical without dose modulation
C. Continuous helical scanning at fixed high dose
D. Retrospective gating with full tube current throughout the cycle
20. ECG-based tube current modulation in retrospective gating reduces dose by:
A. Eliminating the need for contrast
B. Lowering tube current during phases of the cardiac cycle not used for
reconstruction
C. Turning off the X-ray tube completely during diastole
D. Reducing tube voltage throughout the entire scan
21. Which strategy is most effective for reducing radiation dose in a patient with a low,
stable heart rate undergoing coronary CTA?
A. Prospective ECG triggering
B. Widening the scan range unnecessarily
C. Retrospective gating with full-cycle tube current
D. Increasing tube voltage to 140 kVp
22. According to ALARA principles, tube voltage (kVp) selection in cardiac CT should be:
A. Always set to the maximum available value
B. Fixed at 120 kVp for all patients regardless of size
C. Tailored to patient body habitus, using lower kVp in smaller patients
D. Irrelevant to radiation dose
23. What is the primary radiation risk consideration unique to pediatric cardiac CT?
A. Radiation dose cannot be reduced in children
B. No difference in risk compared to adults
C. Higher radiosensitivity and longer lifetime for radiation-induced malignancy
risk to manifest
D. Lower risk than adults due to smaller body size
24. High-pitch prospective helical acquisition (e.g., 'flash' mode) is best suited for patients
with:
A. Frequent ectopic beats
B. High and irregular heart rates
C. Low and regular heart rates
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EACVI CARDIAC COMPUTED TOMOGRAPHY (CCT) | COMPLETE EXAM
2026/2027 | QUESTIONS WITH VERIFIED SOLUTIONS - UPDATED
VERSION (PASS GUARANTEE)
EACVI CARDIAC COMPUTED TOMOGRAPHY
1. Dual-source CT improves temporal resolution primarily by:
A. Using two X-ray tube-detector pairs offset by ~90 degrees
B. Increasing detector row count
C. Using dual-energy acquisition
D. Doubling the tube current
2. Which reconstruction technique uses data from approximately a half-rotation of the
gantry?
A. Filtered back projection only
B. Full-scan reconstruction
C. Half-scan (partial angle) reconstruction
D. Multi-segment reconstruction
3. Multi-segment reconstruction improves temporal resolution by:
A. Reducing tube voltage
B. Increasing pitch
C. Using a single heartbeat with wider detector coverage
D. Combining data from multiple heartbeats at the same cardiac phase
4. What is the approximate temporal resolution achievable with dual-source CT using
half-scan reconstruction?
A. 500-600 ms
B. 66-75 ms
C. 300-400 ms
D. 150-200 ms
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, EACVI Cardiac Computed Tomography
5. Spatial resolution in modern cardiac CT scanners is typically in the range of:
A. 5-10 mm
B. 1-2 mm
C. 0.3-0.4 mm
D. 3-5 mm
6. Which detector technology allows a single heartbeat to cover the entire heart in one
axial acquisition?
A. Electron beam CT
B. Dual-source spiral CT
C. Wide-volume (area) detector CT
D. Single-slice helical CT
7. Iterative reconstruction algorithms are primarily used in cardiac CT to:
A. Reduce image noise and radiation dose
B. Increase spatial resolution beyond detector limits
C. Increase temporal resolution
D. Eliminate the need for ECG gating
8. What does 'pitch' refer to in helical CT acquisition?
A. Gantry rotation speed
B. Table movement per gantry rotation relative to beam collimation width
C. Number of detector rows activated
D. X-ray tube voltage
9. A low pitch value in helical cardiac CT acquisition results in:
A. Decreased radiation dose
B. Reduced image quality
C. Increased radiation dose due to overlapping data acquisition
D. Faster table movement
10. Which of the following best describes 'flying focal spot' technology?
A. A contrast injection technique
B. A dose modulation algorithm
C. Rapid deflection of the electron beam to double angular/z-sampling
D. A method of ECG gating
11. The Hounsfield unit of water is defined as:
A. +1000
B. 0
C. -1000
D. +100
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, EACVI Cardiac Computed Tomography
12. Which of the following increases spatial resolution in cardiac CT?
A. Longer gantry rotation time
B. Higher pitch
C. Lower tube current
D. Smaller detector element size
13. What is the main advantage of a wider z-axis detector coverage (e.g., 16 cm)?
A. Improved contrast resolution
B. Ability to image the entire heart in a single heartbeat, reducing stair-step
artifact
C. Reduced tube heat load
D. Elimination of beam hardening artifact
14. Beam hardening artifact in cardiac CT is caused by:
A. Incorrect ECG triggering
B. Preferential attenuation of lower-energy photons as the beam passes through
dense material
C. Motion of the coronary arteries
D. Low contrast concentration
15. Dual-energy CT acquisition allows for which additional capability compared to single-
energy CT?
A. Material decomposition and virtual monochromatic imaging
B. Reduced need for contrast media entirely
C. Faster gantry rotation
D. Elimination of ECG gating requirement
16. What is the typical gantry rotation time range for modern cardiac CT scanners?
A. 1.0-2.0 seconds
B. 0.23-0.35 seconds
C. 0.5-1.0 seconds
D. 2.0-3.0 seconds
17. Which artifact results from insufficient sampling of rapidly moving structures relative
to gantry speed?
A. Motion (blurring/stair-step) artifact
B. Partial volume artifact
C. Ring artifact
D. Beam hardening artifact
18. Photon-counting detector CT differs from conventional energy-integrating detector CT
by:
A. Directly counting individual photons and measuring their energy
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, EACVI Cardiac Computed Tomography
B. Requiring no post-processing software
C. Eliminating the need for a gantry
D. Using a single tube-detector pair only
19. Which acquisition mode generally delivers the lowest radiation dose for coronary
CTA?
A. Prospective ECG-triggered axial (step-and-shoot)
B. Retrospective ECG-gated helical without dose modulation
C. Continuous helical scanning at fixed high dose
D. Retrospective gating with full tube current throughout the cycle
20. ECG-based tube current modulation in retrospective gating reduces dose by:
A. Eliminating the need for contrast
B. Lowering tube current during phases of the cardiac cycle not used for
reconstruction
C. Turning off the X-ray tube completely during diastole
D. Reducing tube voltage throughout the entire scan
21. Which strategy is most effective for reducing radiation dose in a patient with a low,
stable heart rate undergoing coronary CTA?
A. Prospective ECG triggering
B. Widening the scan range unnecessarily
C. Retrospective gating with full-cycle tube current
D. Increasing tube voltage to 140 kVp
22. According to ALARA principles, tube voltage (kVp) selection in cardiac CT should be:
A. Always set to the maximum available value
B. Fixed at 120 kVp for all patients regardless of size
C. Tailored to patient body habitus, using lower kVp in smaller patients
D. Irrelevant to radiation dose
23. What is the primary radiation risk consideration unique to pediatric cardiac CT?
A. Radiation dose cannot be reduced in children
B. No difference in risk compared to adults
C. Higher radiosensitivity and longer lifetime for radiation-induced malignancy
risk to manifest
D. Lower risk than adults due to smaller body size
24. High-pitch prospective helical acquisition (e.g., 'flash' mode) is best suited for patients
with:
A. Frequent ectopic beats
B. High and irregular heart rates
C. Low and regular heart rates
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