Overview

Tomographic bone scanning is indicated in examining areas in which there is substantial overlap or superimposition of bone structures. This technique provides superior image contrast and anotomic detail, which has been proven to be a significant diagnostic value.

Indications

• A vascular necrosis of the hips due to idopathic osteochondrosis or trauma, such as a subcaptial fracture of the femoral neck or steroid therapy.
• Symptomatic patients with defects in the pars interarticularis.
• Temporamandibular joint dysfunction.
• Spondyloysis and/or spondylolithesis.
• The extent of arthritis in patients with chronic knee pain.
• Any chronic back pain.

Study Description

A radiopharmaceutical is injected intravenously and allowed to circulate for three hours. This time is required for the tracer to accumulate in the osseous tissue. Images are then obtained for the area of interest. Additional static images are acquired prior to SPECT imaging to help localize the problem area. Image acquisition requires approximately one hour. It is very important that the patient remain still during the acquisition.

Examination Time

• Initially: 15 minutes for the injection.
• 3 hours later: 1 hour for image acquisition.

Patient Preparation

• Well hydrated prior to exam
• Ensure the patient is not pregnant or breastfeeding