RADIOGRAPHIC POSTIONING AND RELATED
ANATOMY 9TH EDITION EXAM QUESTIONS AND
CORRECT ANSWERS (verified answers) Q & A 2026
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1. Which projection best demonstrates the intervertebral foramina of the
cervical spine?
A. AP axial
B. Lateral
C. AP open mouth
D. Oblique cervical
Answer: D
Rationale: Oblique cervical projections demonstrate intervertebral foramina best
due to 45° rotation of the patient.
2. The central ray (CR) for a PA chest is directed to:
A. T1
B. T7
C. T10
D. L1
Answer: B
Rationale: The CR is centered at T7 for PA chest to include full lung fields.
3. What is the correct position for a true lateral skull?
,A. MSP parallel to IR
B. MSP perpendicular to IR
C. IOML parallel to IR
D. OML perpendicular to IR
Answer: A
Rationale: MSP must be parallel to IR to avoid rotation.
4. Which structure is best demonstrated in an AP axial clavicle?
A. Acromioclavicular joint
B. Sternoclavicular joint
C. Entire clavicle
D. Scapula
Answer: C
Rationale: AP axial clavicle shows full clavicle length with minimal distortion.
5. The best projection to demonstrate the patella free of femur is:
A. AP knee
B. Lateral knee
C. Sunrise (tangential)
D. Oblique knee
Answer: C
Rationale: Tangential projection isolates patella from femoral condyles.
6. Which position is used to demonstrate the scapular Y view?
A. RAO chest
B. LPO chest
C. Lateral chest
D. AP chest
,Answer: C
Rationale: Lateral chest forms scapula, acromion, and coracoid in Y shape.
7. The CR for an AP abdomen (KUB) is at:
A. Iliac crest
B. ASIS
C. Umbilicus
D. Pubic symphysis
Answer: C
Rationale: Umbilicus approximates L3–L4 region for abdominal imaging.
8. What is required for an AP axial sacrum?
A. 15° cephalad
B. 15° caudad
C. 30° cephalad
D. No angulation
Answer: B
Rationale: 15° caudad angulation opens sacral vertebrae.
9. Which projection best shows the zygomatic arches?
A. Waters
B. Towne
C. SMV
D. Caldwell
Answer: C
Rationale: SMV projects zygomatic arches free of superimposition.
, 10. In an AP shoulder, the humeral epicondyles should be:
A. Parallel to IR
B. Perpendicular to IR
C. Obliqued 45°
D. Rotated medially
Answer: A
Rationale: Neutral rotation places epicondyles parallel to IR.
11. Which projection demonstrates the odontoid process best?
A. AP cervical
B. Open mouth
C. Lateral cervical
D. Oblique cervical
Answer: B
Rationale: Open mouth shows C1–C2 without superimposition.
12. The purpose of oblique lumbar spine positioning is to show:
A. Intervertebral discs
B. Zygapophyseal joints
C. Spinous processes
D. Vertebral bodies only
Answer: B
Rationale: Obliques demonstrate zygapophyseal joints (“Scotty dog”).
13. What is the CR location for a PA hand?
A. MCP joints
B. Wrist joint