CAMRT Radiography Practice Exam

What is a DXA scan primarily used for?

1. Cardiac imaging

2. Bone density testing

3. Soft tissue examination

4. Joint assessment

The correct answer is: Bone density testing

A DXA scan, or Dual-Energy X-ray Absorptiometry, is primarily used for bone density testing. This imaging technique utilizes low dose X-rays to measure the mineral density of bones, commonly focusing on the hip and spine. The primary purpose of a DXA scan is to assess an individual's risk of osteoporosis and fractures by evaluating bone health, especially in populations such as postmenopausal women or older adults who are at higher risk for bone density loss. This test provides important insights regarding bone strength and can help guide treatment options for patients at risk of bone diseases. The results of a DXA scan are often crucial for diagnosing conditions like osteopenia and osteoporosis, which can significantly affect an individual's health and quality of life.