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DEXA Exam Practice PDF – Bone Densitometry & Radiologic Technology Study Guide with Answers & Detailed Rationales [2026–2027]

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Prepare confidently for the DEXA exam with this updated 2026–2027 study guide designed to strengthen your knowledge of bone densitometry, patient positioning, radiation safety, scanning techniques, and clinical interpretation. This resource includes original scenario-based questions, practical case studies, and detailed rationales to help you master core DEXA competencies without using any copyrighted exam content. Enhance your learning with support from leading radiologic technology programs at Rush University, University of Texas Health Science Center, Mayo Clinic School of Health Sciences, University of Alabama at Birmingham, and Thomas Jefferson University, all recognized for excellence in diagnostic imaging and bone densitometry education.

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Dexa exam prep (NEW UPDATED VERSION) LATEST ACTUAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED QUESTIONS AND ANSWERS) | GUARANTEED PASS A+ [2026-2027]




T-score for osteoporosis - CORRECT ANSWER The T-score is ≤ -2.5 at the
femoral neck, total hip, or lumbar spine.



QUESTION : Primary osteoporosis - CORRECT ANSWER Age-related bone
loss, common in postmenopausal women and older adults.



QUESTION : Secondary osteoporosis - CORRECT ANSWER Bone loss
caused by an underlying disease or medication.



QUESTION : Cortical bone - CORRECT ANSWER Dense compact bone
forming outer layer and giving structural strength.



QUESTION : Trabecular bone - CORRECT ANSWER Porous bone with high
metabolic activity; main site of remodeling.



QUESTION : Osteoclasts - CORRECT ANSWER Resorb and break down
bone.



QUESTION : Smoking and bone health - CORRECT ANSWER Smoking
reduces estrogen and impairs bone formation.



QUESTION : Aging effect on bone health - CORRECT ANSWER Bone
resorption exceeds formation leading to net bone loss.




2026 2027 GRADED A+

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QUESTION : Primary role of vitamin D - CORRECT ANSWER Facilitates
absorption of calcium and phosphate in the intestine.



QUESTION : Osteocytes - CORRECT ANSWER Sense mechanical stress and
signal remodeling.



QUESTION : Recent contrast before DXA - CORRECT ANSWER Contrast
artificially increases BMD and causes inaccurate results.



QUESTION : Denosumab - CORRECT ANSWER Inhibits RANKL to reduce
osteoclast activity.



QUESTION : ALARA - CORRECT ANSWER Keep radiation exposure As Low
As Reasonably Achievable.



QUESTION : Time near radiation - CORRECT ANSWER Longer exposure
time results in higher radiation dose.



QUESTION : Distance and radiation - CORRECT ANSWER Radiation
intensity decreases exponentially with distance.



QUESTION : Shielding - CORRECT ANSWER Absorbs or deflects radiation
from the source.



QUESTION : Long-term risk of low-dose radiation - CORRECT ANSWER
Cataracts or increased cancer risk.



QUESTION : Dosimeters - CORRECT ANSWER To track cumulative
exposure over time.



2026 2027 GRADED A+

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