ARRT CT Practice Questions - ARRT Computed Tomography (Postprimary) Exam - ARRT CT Practice Questions - ARRT Computed Tomography (Postprimary) Exam

Question 1

Case 001 (Patient Screening): A 58-year-old male presents for a contrast-enhanced abdominal CT. His medical history includes type 2 diabetes managed with metformin. His most recent eGFR is 28 mL/min/1.73 m². What is the most appropriate course of action?

Proceed with iodinated contrast as planned since metformin can be resumed immediately after. Withhold the contrast and consult the ordering physician before proceeding. Administer half the normal contrast dose to reduce kidney risk. Replace iodinated contrast with gadolinium-based contrast for the CT scan.

Correct Answer:

Withhold the contrast and consult the ordering physician before proceeding.

Question 2

Case 002 (Contrast Allergy): A 45-year-old female is scheduled for a CT pulmonary angiography (CTPA) to rule out pulmonary embolism. She reports a prior moderate allergic reaction (hives and facial swelling) to iodinated contrast during a previous CT. What is the recommended pre-medication protocol?

Administer 50 mg oral prednisone at 13 hours, 7 hours, and 1 hour before contrast injection plus 50 mg oral diphenhydramine 1 hour before. Give 25 mg IV diphenhydramine immediately before injection without corticosteroids. Use a different brand of iodinated contrast without pre-medication since the allergy is brand-specific. Cancel the CTPA entirely and order a ventilation-perfusion scan instead.

Correct Answer:

Administer 50 mg oral prednisone at 13 hours, 7 hours, and 1 hour before contrast injection plus 50 mg oral diphenhydramine 1 hour before.

Question 3

Case 003 (Informed Consent): A technologist is preparing to administer IV iodinated contrast for a CT of the abdomen and pelvis. Which element is NOT typically required as part of informed consent for contrast administration?

Description of the purpose of the contrast injection. Possible risks including allergic reaction and contrast-induced nephropathy. A guarantee that no adverse reaction will occur. The patient's right to refuse the contrast injection.

Correct Answer:

A guarantee that no adverse reaction will occur.

Question 4

Case 004 (NPO Guidelines): A 72-year-old patient is scheduled for a contrast-enhanced CT of the chest at 10:00 AM. The patient ate breakfast at 7:30 AM. According to current ACR guidelines regarding fasting before IV contrast, what should the technologist do?

Reschedule the exam for later in the day to ensure a full 8-hour fast. Proceed with the exam since current ACR guidelines do not mandate routine fasting before IV iodinated contrast. Administer an antiemetic before the contrast injection to prevent aspiration. Convert the study to a non-contrast CT to avoid aspiration risk.

Correct Answer:

Proceed with the exam since current ACR guidelines do not mandate routine fasting before IV iodinated contrast.

Question 5

Case 005 (Emergency Response): During a contrast-enhanced CT scan, a 50-year-old patient develops stridor, facial edema, and a drop in blood pressure to 70/40 mmHg within 2 minutes of injection. What is the FIRST medication that should be administered?

IV diphenhydramine 50 mg. Intramuscular epinephrine 0.3 mg (1:1,000 concentration) in the anterolateral thigh. IV methylprednisolone 125 mg. Sublingual nitroglycerin 0.4 mg.

Correct Answer:

Intramuscular epinephrine 0.3 mg (1:1,000 concentration) in the anterolateral thigh.

Question 1

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Prepare with the ARRT CT Practice Questions - ARRT Computed Tomography (Postprimary) Exam practice quiz. This question bank includes 100 questions covering case, patient, year-old, contrast, and technologist. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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ARRT CT Practice Questions - ARRT Computed Tomography (Postprimary) Exam

This practice set contains 100 questions from the matching question bank and focuses on case, patient, year-old, contrast, and technologist. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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ARRT CT Practice Questions - ARRT Computed Tomography (Postprimary) Exam

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