CT Exam Questions (Imaging
Procedures 1) Questions and Answers
Latest Version Already Passed
Which of the following is the most common plane used in CT imaging?
A) Coronal
B) Axial
✔✔C) Transverse
D) Sagittal
What is the purpose of using contrast media in a CT scan?
A) To reduce patient radiation dose
✔✔B) To enhance the visibility of blood vessels and organs
C) To eliminate image artifacts
D) To decrease image resolution
Which factor primarily affects the spatial resolution in a CT scan?
A) Gantry speed
B) kVp selection
1
,C) Patient positioning
✔✔D) Detector size and pixel matrix
What is the primary function of Hounsfield Units (HU) in CT imaging?
A) To determine radiation dose
B) To measure the speed of X-ray rotation
✔✔C) To quantify tissue density
D) To adjust contrast media concentration
Which of the following body regions requires the use of a thinner CT slice for better
visualization?
✔✔A) Inner ear
B) Abdomen
C) Pelvis
D) Chest
What is the recommended patient preparation for an abdominal CT scan with contrast?
A) No food or drink 1 hour before the exam
2
,✔✔B) Fasting for at least 4 hours before the exam
C) Only avoid caffeine before the exam
D) No preparation is needed
Which CT imaging technique is most useful for detecting pulmonary embolism?
✔✔A) CT angiography (CTA)
B) Non-contrast chest CT
C) High-resolution CT
D) PET-CT
What is the main advantage of dual-energy CT scanning?
A) Reduces patient motion artifacts
B) Shortens scan time significantly
✔✔C) Differentiates materials based on their atomic composition
D) Eliminates the need for contrast media
Which of the following conditions is best diagnosed with a non-contrast CT of the brain?
A) Brain tumor
3
, ✔✔B) Acute hemorrhage
C) Multiple sclerosis
D) Pituitary adenoma
Which parameter primarily controls image noise in a CT scan?
A) mAs
✔✔B) kVp
C) Detector width
D) Pitch
Which CT artifact is commonly caused by metallic implants?
A) Beam hardening
B) Motion blur
✔✔C) Streak artifact
D) Ring artifact
Which of the following best describes the pitch in CT scanning?
✔✔A) The ratio of table movement per rotation to slice thickness
4
Procedures 1) Questions and Answers
Latest Version Already Passed
Which of the following is the most common plane used in CT imaging?
A) Coronal
B) Axial
✔✔C) Transverse
D) Sagittal
What is the purpose of using contrast media in a CT scan?
A) To reduce patient radiation dose
✔✔B) To enhance the visibility of blood vessels and organs
C) To eliminate image artifacts
D) To decrease image resolution
Which factor primarily affects the spatial resolution in a CT scan?
A) Gantry speed
B) kVp selection
1
,C) Patient positioning
✔✔D) Detector size and pixel matrix
What is the primary function of Hounsfield Units (HU) in CT imaging?
A) To determine radiation dose
B) To measure the speed of X-ray rotation
✔✔C) To quantify tissue density
D) To adjust contrast media concentration
Which of the following body regions requires the use of a thinner CT slice for better
visualization?
✔✔A) Inner ear
B) Abdomen
C) Pelvis
D) Chest
What is the recommended patient preparation for an abdominal CT scan with contrast?
A) No food or drink 1 hour before the exam
2
,✔✔B) Fasting for at least 4 hours before the exam
C) Only avoid caffeine before the exam
D) No preparation is needed
Which CT imaging technique is most useful for detecting pulmonary embolism?
✔✔A) CT angiography (CTA)
B) Non-contrast chest CT
C) High-resolution CT
D) PET-CT
What is the main advantage of dual-energy CT scanning?
A) Reduces patient motion artifacts
B) Shortens scan time significantly
✔✔C) Differentiates materials based on their atomic composition
D) Eliminates the need for contrast media
Which of the following conditions is best diagnosed with a non-contrast CT of the brain?
A) Brain tumor
3
, ✔✔B) Acute hemorrhage
C) Multiple sclerosis
D) Pituitary adenoma
Which parameter primarily controls image noise in a CT scan?
A) mAs
✔✔B) kVp
C) Detector width
D) Pitch
Which CT artifact is commonly caused by metallic implants?
A) Beam hardening
B) Motion blur
✔✔C) Streak artifact
D) Ring artifact
Which of the following best describes the pitch in CT scanning?
✔✔A) The ratio of table movement per rotation to slice thickness
4
