CAMRT Radiography Practice Exam

How is a myelogram defined?

1. A study of lung function

2. A contrast study of the spinal cord

3. An imaging technique for the brain

4. A test for joint mobility

The correct answer is: A contrast study of the spinal cord

A myelogram is defined as a contrast study of the spinal cord. This procedure involves the injection of a contrast dye into the spinal canal, allowing for enhanced imaging of the spinal cord and surrounding structures during X-ray or CT scans. The purpose of a myelogram is to diagnose conditions related to the spinal cord, such as herniated discs, spinal stenosis, or tumors, by visualizing any abnormalities that may affect the flow of the contrast material and the overall anatomy of the spinal column. In contrast, the other options refer to different medical procedures or tests: a study of lung function pertains to pulmonary function tests, an imaging technique for the brain would relate to methods like MRI or CT scans focused on cranial structures, and a test for joint mobility involves assessing the range of motion in joints, which is typically unrelated to spinal assessments. Each of these serves a specific diagnostic purpose that does not involve the spinal cord or the administration of contrast material to visualize it.