Question: How Does Bone Scintigraphy Work?

Are bone scans accurate?

Ohta and colleagues compared PET and bone scan in evaluation of skeletal metastases in 51 patients with breast cancer and found that the sensitivity, specificity and accuracy of the bone scan were 77.7%, 80.9% and 80.3%, respectively..

Does a bone scan show osteoporosis?

To diagnose osteoporosis and assess your risk of fracture and determine your need for treatment, your doctor will most likely order a bone density scan. This exam is used to measure bone mineral density (BMD).

How does a bone scan work?

During a bone scan, a radioactive substance is injected into a vein that is taken up by your bones. You’ll then be monitored for several hours. A very small amount of radiation is used in the substance, and nearly all of it is released from your body within two or three days.

How long does a bone scan take?

The scan itself can take up to an hour. The procedure is painless. Your doctor might order a three-phase bone scan, which includes a series of images taken at different times. A number of images are taken as the tracer is injected, then shortly after the injection, and again three to five hours after the injection.

What does a positive bone scan mean?

A bone scan is a nuclear medicine test. This means that the procedure uses a very small amount of a radioactive substance, called a tracer. The tracer is injected into a vein. It shows possible cancer in areas where too much or too little tracer has been absorbed by the body.

What is the difference between a bone scan and a CT scan?

In computed tomography, the X-ray beam moves in a circle around the body. … CT scans of the bones can provide more detailed information about the bone tissue and bone structure than standard X-rays of the bone, thus providing more information related to injuries and/or diseases of the bone.

Is a bone scan painful?

While the bone scan itself causes no pain, having to lie still for the length of the procedure might cause some discomfort or pain, particularly in the case of a recent injury or invasive procedure such as surgery.

What machine is used for a bone scan?

The special camera and imaging techniques used in nuclear medicine include the gamma camera and single-photon emission-computed tomography (SPECT). The gamma camera, also called a scintillation camera, detects radioactive energy that is emitted from the patient’s body and converts it into an image.

Do you have to take your clothes off for a bone scan?

Having the bone scan You usually wear your own clothes for the scan but some hospitals may ask you to change into a hospital gown. Your radiographer will ask you to empty your pockets and remove any metal objects such as keys, coins, belts, braces and jewellery.