Question: What is the purpose of a DEXA scan in the context of bone health assessment? A) Measure bone density B) Assess lung function C) Evaluate liver function D) Monitor blood glucose levels Answer: A) Measure bone density Rationale: DEXA scans are commonly used to assess bone mineral density and diagnose osteoporosis. Question: Which diagnostic test is most appropriate for evaluating cardiac function and diagnosing heart conditions? A) Echocardiogram B) Liver function test C) Urinalysis D) Thyroid function test Answer: A) Echocardiogram Rationale: An echocardiogram is a non-invasive test that provides detailed images of the heart's structure and function. Question: What is the primary purpose of a CT scan in diagnostic imaging? A) Evaluate bone fractures B) Assess brain function C) Detect internal bleeding D) Visualize soft tissue structures Answer: D) Visualize soft tissue structures Rationale: CT scans are particularly useful for visualizing internal organs and soft tissues with great detail. Question: Which laboratory test is essential for monitoring kidney function and assessing electrolyte balance? A) Complete blood count (CBC) B) Urine culture C) Renal panel D) Lipid profile Answer: C) Renal panel