To Determine the Cause of the Patient's Severe Back Pain,the

Multiple Choice

To determine the cause of the patient's severe back pain,the doctor ordered a diagnostic test to record images of the spinal cord after an injection of a contrast agent into the subarachnoid space.This process is called

A) positron emission tomography.
B) magnetic resonance imaging.
C) CT myelography.
D) evoked potential studies.