CAMRT Radiography Practice Exam

What does DXA stand for in radiography?

1. Digital X-Ray Analysis

2. Dual Energy X-Ray Absorptiometry

3. Dental X-Ray Assessment

4. Dynamic X-Ray Analysis

The correct answer is: Dual Energy X-Ray Absorptiometry

DXA stands for Dual Energy X-Ray Absorptiometry, which is a specialized imaging technique primarily used to measure bone mineral density (BMD). This method employs two different energy levels of X-rays to differentiate between bone and soft tissue, allowing for precise assessment of bone health. It is particularly significant in the diagnosis of osteoporosis and in evaluating fracture risk. The technique provides valuable information regarding the density of bones, aiding healthcare providers in making informed decisions about treatment and monitoring of patients at risk for bone-related diseases. The other terms provided are either incorrect or are not associated with the specific technique used in DXA. Digital X-Ray Analysis does not refer to the dual energy component necessary for assessing bone density. Dental X-Ray Assessment is focused on dental structures and would not address whole-body or specific bone density issues. Dynamic X-Ray Analysis involves evaluating moving structures in real-time, which is not the purpose of DXA. Each of these methods serves different diagnostic needs, highlighting the unique application of DXA within radiography.