RADIOLOGY MIDTERM REVIEW EXAM QUESTIONS WITH CORRECT ANSWERS [GRADED A+]

RADIOLOGY MIDTERM REVIEW EXAM

QUESTIONS WITH CORRECT

ANSWERS [GRADED A+]



X-ray image creation - ✔✔Ionizing radiation striking a photosensitive plate



Basic X-ray views - ✔✔PA, AP, Oblique, Lateral



X-ray appearance: Air - ✔✔Black



X-ray appearance: Fat - ✔✔Dark gray



X-ray appearance: Water/Soft tissue - ✔✔Light gray



X-ray appearance: Bone - ✔✔White




©morren2025/2026.Year published 2025.

,X-ray appearance: Metal - ✔✔Bright white



Advantage of X-ray - ✔✔Quick, inexpensive, portable, widely available



Disadvantages of X-ray - ✔✔2D only; ionizing radiation exposure



Best initial imaging for skeletal system - ✔✔X-ray



Common preliminary imaging for chest/abdomen - ✔✔X-ray



CT image generation device - ✔✔Rotating X-ray beam on a gantry



Numeric scale for CT density - ✔✔Hounsfield units (HU)



CT HU: Air - ✔✔−1000 HU



CT HU: Fat - ✔✔−40 to −120 HU



CT HU: Water - ✔✔0 HU


©morren2025/2026.Year published 2025.

, CT HU: Soft tissue - ✔✔20-100 HU



CT HU: Bone - ✔✔400-600 HU



CT HU: Metal - ✔✔≈ +1000 HU



CT attenuation - ✔✔Degree to which tissue absorbs/weakens X-rays



Common CT windows - ✔✔Soft tissue window, Lung window, Bone

window



CT planes - ✔✔Axial, Coronal, Sagittal, 3D



Axial view orientation - ✔✔Patient's feet point toward you



Coronal view orientation - ✔✔Patient is facing you



Sagittal view orientation - ✔✔Patient's left is toward you


©morren2025/2026.Year published 2025.