Which of the following specialized imaging techniques is used to assess bone density?

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Dual energy x-ray absorptiometry (DXA) scan is a specialized x-ray that assesses bone density; it is used to diagnose and manage osteoporosis. Arthrograms visualize the joints with an x-ray after the injection of a radiopaque dye. Bone scans evaluate areas of bone growth, bone tumors, and other bone disease patterns; they require the use of an injected dye or isotope. Computed tomography (CT) scans visualize multiple planes of soft tissue such as tumors, lesions, or some spinal injuries; they are usually used with an injected dye. Electromyography (EMG) and nerve conduction velocity studies (NCS) evaluate muscle and nerve response to a stimulus.

Which of the Following Specialized Imaging Techniques Is Used to Assess