CT Comprehensive Final Review (Exams 1–3) 2026 | Questions, Answers & Detailed Rationales Study Guide

CT Comprehensive Final
Review (Exams 1–3) 2026 |
Questions, Answers &
Detailed Rationales Study
Guide
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Updated 2026 Questions and Answers
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Rationales
Included

, Hounsfield Unit of Air -1000 HU


Hounsfield Unit of Dense Bone Approximately +1000 HU


Tissue with Negative HU Value Fat




Increasing mAs Effect Decreases image noise and increases patient dose


Increasing kVp Effect Increases beam penetration and patient dose


Uncoupling Effect Image quality is not directly linked to radiation dose in digital imaging


ATCM Stands For Automatic Tube Current Modulation


Purpose of ATCM Adjusts mAs according to patient size and anatomy to reduce dose


Increasing Pitch Effect on Dose Decreases patient dose


Increasing Pitch Effect on Scan Time Faster scan acquisition


Increasing Pitch Effect on Image Quality May reduce image quality


Positive Contrast Appearance White/Bright




Negative Contrast Appearance Dark


Viscosity Definition Resistance to flow


Osmolality Definition Number of particles in solution


Major IV Contrast Contraindications Severe allergy and renal impairment