Computed Tomography Study Guide 2026–2027 | 200 Practice Questions

Prepare for the ARRT Computed Tomography (CT) exam with a complete, illustrated study guide organized around the seven subcategories of the current ARRT CT content specifications: Patient Interactions and Management, Radiation Safety and Dose, Image Formation, Image Evaluation and Archiving, Head, Spine, and Musculoskeletal, Neck and Chest, and Abdomen and Pelvis. Every section explains the content with tables, protocols, worked calculations, and diagrams, and closes with exam tips and key points.

This 118-page digital guide combines clear content review with two 100-question practice tests of exam-level questions, so you can learn each concept and then practice the scenarios and calculations the exam asks for.

What's Inside

• An overview of the current exam: 195 questions (165 scored, 30 pilot) in 195 minutes, the seven subcategories and their weights (21/21/30/22/25/22/24 scored items), postprimary eligibility, the 1–99 scaled score with 75 to pass, fees, attempts, and renewal
• Patient Interactions and Management: screening, lab values (eGFR, creatinine, INR, D-dimer, hCG), consent and time-out, monitoring and accessory devices, infection control, contrast agents and medications, venipuncture and power injectors, bolus tracking and phase timing, reactions, and extravasation
• Radiation Safety and Dose: x-ray production, beam quality and quantity, photon interactions, Hounsfield units, CTDIvol, DLP, effective dose, notification and alert values, AEC, dose reduction, shielding, and personnel protection
• Image Formation: gantry components, kVp, mAs, pitch, beam width, SFOV, sequential, helical, volumetric, cine, and dual-energy acquisition, filtered backprojection and iterative reconstruction, kernels, MPR, MIP, MinIP, volume rendering, and calcium scoring
• Image Evaluation and Archiving: pixel size and DFOV, window width and level, resolution and noise, daily QC, accreditation, artifacts and how to reduce them, HIS, RIS, PACS, DICOM, security, and downtime procedures
• Procedures: head trauma and stroke, CT perfusion, neurovascular CTA, temporal bones, orbits, sinuses, facial bones, spine and postmyelogram CT, MSK and postarthrogram CT, neck and larynx, HRCT and lung screening, CT pulmonary angiography, aortic dissection, coronary CTA and calcium scoring, TAVR planning, multiphase liver, pancreas, and adrenal protocols, urography and stones, retrograde cystography, CT colonography, trauma, and CT-guided procedures
• Illustrated diagrams, including the CT gantry, the Hounsfield scale, contrast enhancement phases, helical pitch, the circle of Willis, and the abdominal aorta and its branches
• A final review checklist, 6-week and 10-week study schedules, FAQs, test-taking strategies, and recommended resources
• 2 practice tests (200 questions) weighted like the exam's seven subcategories, with a separate answer key explaining every answer and the mistake behind tempting distractors

Format

• Instant digital download (PDF), 8.5 × 11 in
• Clickable table of contents
• Print it or study on a tablet, laptop, or phone

Please note: This is a digital product. No physical item will be shipped.

ARRT® is a registered trademark of The American Registry of Radiologic Technologists, Inc. Test Treasure Publication is not affiliated with or endorsed by ARRT or any testing organization; all exam and organization names referenced are trademarks of their respective owners.