CT REGISTRY
OBJECTIVE ASSESSMENT REVIEW
Computed Tomography
Registry Review
100 Original Study Questions with Answers and Rationales
| 2026/2027
Independent educational review aligned to CT registry content categories; not affiliated with
ARRT or any exam vendor.
100 100 2026/2027
QUESTIONS ORIGINAL ITEMS EDITION
TOPICS COVERED
Patient interactions and contrast Image evaluation and artifacts
Radiation safety and dose Head, spine, and MSK CT
CT image formation Chest, abdomen, and pelvis CT
COVER PAGE - 1
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 1 of 47
,Computed Tomography Registry Review
100 Original Study Questions with Answers and Rationales | 2026/2027
Independent educational review aligned to CT registry content categories; not affiliated with ARRT or any exam vendor.
Section Questions High-yield focus
Patient Care Q1-Q13 Patient Interactions and Management, Contrast and Medication, Venipuncture, Pati
Safety Q14-Q26 Radiation Physics, Radiation Protection, Dose Measurements, Dose Modulation
Image Production - Image Formation Q27-Q44 Components of a CT Unit, Imaging Parameters, Methods of Data Acquisition, Imag
Image Production - Image Evaluation and Archiving
Q45-Q57 Image Display, Image Quality, Artifacts, Hounsfield Units
Procedures Q58-Q100 Head, Spine, and Musculoskeletal, Neck and Chest, Abdomen and Pelvis, CTA and
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 2 of 47
, SECTION 1 | Patient Care | Q1-Q13 | Computed Tomography Registry Review 2026/2027
Q1 Question 1 of 100
A 67-year-old outpatient arrives for a contrast-enhanced CT abdomen, and the wristband name
differs slightly from the requisition. The scanner room is open, but the technologist notices the
mismatch before starting the exam.
A. Stop and reconcile the patient identity and order with two identifiers before positioning.
B. Proceed because the date of birth is close and the clinical history matches the request.
C. Scan the patient without contrast and correct the documentation after the study.
D. Ask the family member to confirm the patient and document that as the only check.
Correct Answer: A
Rationale:
Patient identity and the imaging order must be verified before the examination begins. Similar names or family
confirmation alone do not replace two-identifier verification and order reconciliation.
Q2 Question 2 of 100
A 72-year-old diabetic client is scheduled for CT angiography with iodinated contrast. The
recent laboratory report shows eGFR 24 mL/min/1.73 m2 and the client has a history of chronic
kidney disease.
A. Inject the standard dose because diabetes alone is not a contrast consideration.
B. Notify the radiologist or provider and follow contrast-risk policy before injection.
C. Change the study to oral contrast only without discussing the diagnostic goal.
D. Ask the patient to drink extra water and proceed with high-flow injection immediately.
Correct Answer: B
Rationale:
Severely reduced eGFR increases concern for contrast-associated kidney injury and requires protocol review.
Hydration alone is not a substitute for radiologist/provider decision-making when renal risk is high.
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 3 of 47
, Q3 Question 3 of 100
A 55-year-old patient reports hives and wheezing after a prior iodinated contrast injection. The
current order is for CT neck with contrast to evaluate a deep infection.
A. Proceed with contrast because prior symptoms do not predict any future reaction risk.
B. Give oral barium before the scan because it prevents iodinated contrast reactions.
C. Escalate the history so the radiologist can consider premedication, alternative imaging, or a modified
plan.
D. Cancel the examination permanently without notifying the ordering provider.
Correct Answer: C
Rationale:
A prior allergic-like reaction, especially with respiratory symptoms, needs radiologist review and facility policy
application. Oral barium does not prevent an iodinated contrast reaction.
Q4 Question 4 of 100
A 31-year-old patient of childbearing potential is scheduled for CT abdomen and pelvis after
trauma. The patient is alert and unsure of pregnancy status.
A. Skip pregnancy screening because trauma patients never require documentation.
B. Delay all imaging until a menstrual period occurs, regardless of injury severity.
C. Use a lead apron over the abdomen during the scan as the only action.
D. Ask about pregnancy status and follow emergency and facility screening policy before imaging.
Correct Answer: D
Rationale:
Pregnancy status should be assessed when possible, while urgent trauma imaging may proceed when benefits
outweigh risks. Shielding alone does not address protocol selection or documentation.
Q5 Question 5 of 100
A patient scheduled for CT-guided lung biopsy asks why a separate consent process is needed.
The patient already signed a general hospital treatment form.
A. Explain the procedure-specific risks, benefits, alternatives, and obtain consent according to policy.
B. Proceed because consent is unnecessary for image-guided invasive procedures.
C. Ask the CT technologist to sign consent for the patient if the schedule is delayed.
D. Use the CT order as consent because the provider requested the study.
Correct Answer: A
Rationale:
Image-guided biopsies are invasive and require procedure-specific informed consent. A general hospital form or
imaging order does not replace informed consent for the procedure.
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 4 of 47
OBJECTIVE ASSESSMENT REVIEW
Computed Tomography
Registry Review
100 Original Study Questions with Answers and Rationales
| 2026/2027
Independent educational review aligned to CT registry content categories; not affiliated with
ARRT or any exam vendor.
100 100 2026/2027
QUESTIONS ORIGINAL ITEMS EDITION
TOPICS COVERED
Patient interactions and contrast Image evaluation and artifacts
Radiation safety and dose Head, spine, and MSK CT
CT image formation Chest, abdomen, and pelvis CT
COVER PAGE - 1
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 1 of 47
,Computed Tomography Registry Review
100 Original Study Questions with Answers and Rationales | 2026/2027
Independent educational review aligned to CT registry content categories; not affiliated with ARRT or any exam vendor.
Section Questions High-yield focus
Patient Care Q1-Q13 Patient Interactions and Management, Contrast and Medication, Venipuncture, Pati
Safety Q14-Q26 Radiation Physics, Radiation Protection, Dose Measurements, Dose Modulation
Image Production - Image Formation Q27-Q44 Components of a CT Unit, Imaging Parameters, Methods of Data Acquisition, Imag
Image Production - Image Evaluation and Archiving
Q45-Q57 Image Display, Image Quality, Artifacts, Hounsfield Units
Procedures Q58-Q100 Head, Spine, and Musculoskeletal, Neck and Chest, Abdomen and Pelvis, CTA and
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 2 of 47
, SECTION 1 | Patient Care | Q1-Q13 | Computed Tomography Registry Review 2026/2027
Q1 Question 1 of 100
A 67-year-old outpatient arrives for a contrast-enhanced CT abdomen, and the wristband name
differs slightly from the requisition. The scanner room is open, but the technologist notices the
mismatch before starting the exam.
A. Stop and reconcile the patient identity and order with two identifiers before positioning.
B. Proceed because the date of birth is close and the clinical history matches the request.
C. Scan the patient without contrast and correct the documentation after the study.
D. Ask the family member to confirm the patient and document that as the only check.
Correct Answer: A
Rationale:
Patient identity and the imaging order must be verified before the examination begins. Similar names or family
confirmation alone do not replace two-identifier verification and order reconciliation.
Q2 Question 2 of 100
A 72-year-old diabetic client is scheduled for CT angiography with iodinated contrast. The
recent laboratory report shows eGFR 24 mL/min/1.73 m2 and the client has a history of chronic
kidney disease.
A. Inject the standard dose because diabetes alone is not a contrast consideration.
B. Notify the radiologist or provider and follow contrast-risk policy before injection.
C. Change the study to oral contrast only without discussing the diagnostic goal.
D. Ask the patient to drink extra water and proceed with high-flow injection immediately.
Correct Answer: B
Rationale:
Severely reduced eGFR increases concern for contrast-associated kidney injury and requires protocol review.
Hydration alone is not a substitute for radiologist/provider decision-making when renal risk is high.
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 3 of 47
, Q3 Question 3 of 100
A 55-year-old patient reports hives and wheezing after a prior iodinated contrast injection. The
current order is for CT neck with contrast to evaluate a deep infection.
A. Proceed with contrast because prior symptoms do not predict any future reaction risk.
B. Give oral barium before the scan because it prevents iodinated contrast reactions.
C. Escalate the history so the radiologist can consider premedication, alternative imaging, or a modified
plan.
D. Cancel the examination permanently without notifying the ordering provider.
Correct Answer: C
Rationale:
A prior allergic-like reaction, especially with respiratory symptoms, needs radiologist review and facility policy
application. Oral barium does not prevent an iodinated contrast reaction.
Q4 Question 4 of 100
A 31-year-old patient of childbearing potential is scheduled for CT abdomen and pelvis after
trauma. The patient is alert and unsure of pregnancy status.
A. Skip pregnancy screening because trauma patients never require documentation.
B. Delay all imaging until a menstrual period occurs, regardless of injury severity.
C. Use a lead apron over the abdomen during the scan as the only action.
D. Ask about pregnancy status and follow emergency and facility screening policy before imaging.
Correct Answer: D
Rationale:
Pregnancy status should be assessed when possible, while urgent trauma imaging may proceed when benefits
outweigh risks. Shielding alone does not address protocol selection or documentation.
Q5 Question 5 of 100
A patient scheduled for CT-guided lung biopsy asks why a separate consent process is needed.
The patient already signed a general hospital treatment form.
A. Explain the procedure-specific risks, benefits, alternatives, and obtain consent according to policy.
B. Proceed because consent is unnecessary for image-guided invasive procedures.
C. Ask the CT technologist to sign consent for the patient if the schedule is delayed.
D. Use the CT order as consent because the provider requested the study.
Correct Answer: A
Rationale:
Image-guided biopsies are invasive and require procedure-specific informed consent. A general hospital form or
imaging order does not replace informed consent for the procedure.
Computed Tomography Registry Review - 2026/2027 | Suggested Mastery Score: 80% | Page 4 of 47
