Assessment Questions and Answers
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What is the recommended scan delay for a CT urogram’s excretory phase?
A) 10 seconds
B) 30 seconds
C) 2 minutes
✔✔D) 10 minutes
Which window setting is most appropriate for visualizing lung parenchyma?
✔✔A) Wide window, low level
B) Narrow window, high level
C) Wide window, high level
D) Narrow window, low level
Which patient condition requires extra caution when performing a CT-guided biopsy?
✔✔A) Bleeding disorder
B) Diabetes
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,C) Osteoporosis
D) Hyperthyroidism
Which of the following adjustments can reduce radiation dose in pediatric CT scans?
A) Increase kVp
✔✔B) Use lower mAs
C) Increase slice thickness
D) Increase pitch
What is the most common indication for a CT perfusion study?
A) Lung disease
B) Spinal trauma
C) Bowel obstruction
✔✔D) Stroke evaluation
Which of the following best describes the purpose of contrast-enhanced CT of the abdomen?
A) To detect lung nodules
✔✔B) To assess vascular structures and organs
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,C) To diagnose brain hemorrhage
D) To evaluate spinal cord injuries
Which plane is best suited for evaluating intervertebral disc herniation in a CT spine scan?
✔✔A) Sagittal
B) Axial
C) Coronal
D) Oblique
Which CT imaging technique is most useful for detecting kidney stones?
✔✔A) Non-contrast CT abdomen
B) CT urogram with contrast
C) Delayed phase CT
D) CT angiography
Which CT parameter primarily controls image contrast?
A) mAs
B) Pitch
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, ✔✔C) kVp
D) Slice thickness
Which of the following is the best patient position for a routine CT scan of the chest?
✔✔A) Supine with arms raised
B) Prone with arms at sides
C) Lateral decubitus
D) Semi-upright
What type of contrast is commonly used for CT angiography?
A) Barium sulfate
B) Air
✔✔C) Iodinated contrast
D) Gadolinium
Which organ is most at risk of radiation exposure during a CT abdomen and pelvis scan?
A) Heart
B) Lungs
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