CT BOOTCAMP EXAM QUESTIONS AND
ANSWERS
what radiation dose quantity is significantly influenced by the overall length of a CT
scan? - Answer-dose length product (DLP)
in what way do Compton scattering interactions affect the image quality of a CT scan? -
Answer-decreased contrast resolution
what liver pathology is commonly observed in CT as multiple hypoattenuating lesions -
Answer-liver mets
what is the primary indication for a CT colonography with volume rendering (VR)? -
Answer-screening for colorectal carcinoma
what CT windowing technique is appropriate for visualizing lung tissue? - Answer-1800
WW and -600 WL
what post processing method in CT is useful for creating images with variable
transparency and colors? - Answer-volume rendering
what is the primary anatomical structure of interest when performing ejection fraction
measurements in CT? - Answer-left ventricle
which of the following exposure settings will produce an xray beam with the highest
beam quantity?
A. 70 kVp 500 mA
B. 90 kVp 200 mA
C. 110 kVp 400 mA
D 140 kVp 300 mA - Answer-D
which of the following CT detector configurations should be used to minimize total scan
time?
A. 64 rows x 0.625mm per row
B. 32 rows x 1.25 mm per row
C. 16 rows x 0.625mm per row
D. 8 rows x 1.25mm per row - Answer-B
what vessel is formed by the fusion of the vertebral arteries at the level of the foramen
magnum? - Answer-basilar artery
a single slice in a series of axial images shows a pattern of parallel streaks across the
entire image. what is the likely cause of the artifact? - Answer-xray tube output was
temporarily lost
ANSWERS
what radiation dose quantity is significantly influenced by the overall length of a CT
scan? - Answer-dose length product (DLP)
in what way do Compton scattering interactions affect the image quality of a CT scan? -
Answer-decreased contrast resolution
what liver pathology is commonly observed in CT as multiple hypoattenuating lesions -
Answer-liver mets
what is the primary indication for a CT colonography with volume rendering (VR)? -
Answer-screening for colorectal carcinoma
what CT windowing technique is appropriate for visualizing lung tissue? - Answer-1800
WW and -600 WL
what post processing method in CT is useful for creating images with variable
transparency and colors? - Answer-volume rendering
what is the primary anatomical structure of interest when performing ejection fraction
measurements in CT? - Answer-left ventricle
which of the following exposure settings will produce an xray beam with the highest
beam quantity?
A. 70 kVp 500 mA
B. 90 kVp 200 mA
C. 110 kVp 400 mA
D 140 kVp 300 mA - Answer-D
which of the following CT detector configurations should be used to minimize total scan
time?
A. 64 rows x 0.625mm per row
B. 32 rows x 1.25 mm per row
C. 16 rows x 0.625mm per row
D. 8 rows x 1.25mm per row - Answer-B
what vessel is formed by the fusion of the vertebral arteries at the level of the foramen
magnum? - Answer-basilar artery
a single slice in a series of axial images shows a pattern of parallel streaks across the
entire image. what is the likely cause of the artifact? - Answer-xray tube output was
temporarily lost
