Which of the following diagnostic procedures is useful in identifying a herniated nucleus pulposus?
A) dual-energy absorptiometry
B) myelography
C) bone scan
D) arthrography
B) myelography
Myelography is the study of the spinal column after injecting opaque contrast
material; it is particularly useful in identifying a herniated nucleus pulposus disk pinching a
spinal nerve. A dual-energy absorptiometry is a measurement of bone density using a low-dose
X-ray for the purpose of detecting osteoporosis. A bone scan is a nuclear medicine procedure
especially useful in identifying stress fractures, observing progress of treatment for
osteomyelitis, and locating cancer metastases to the bone. An arthrography is a visualization of a
joint by radiographic study after injection of a contrast medium into the joint space.
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