A brain SPECT (Single Photon Emission Computed Tomography) scan is used to detect altered blood flow in the brain.
(insert image here)

What is a Brain SPECT Scan?

A SPECT scan (Single Photon Emission Computed Tomography) is a nuclear medicine exam that uses a radioactive compound to diagnose some diseases of the brain. It is a form of radiology because radiation is used to capture pictures of the human body.

How should I prepare for the scan?

No preparation is necessary. However, if there is any chance you are pregnant, please let the technologist know.

How does the scan work?

You will be given a small dose of radioactive material through an intravenous (IV) line. This compound, called a tracer, collects in the brain and gives off gamma rays. The gamma camera detects the rays and then produces pictures and measurements of the brain. The amount of radiation is very small.

How is the scan performed?

At our Gamma Knife Center, the gamma camera detects the rays. A computer will then produce pictures of the brain based on the detected gamma rays. Minutes after your injection, you will undergo imaging of your brain. The imaging involves lying flat while the camera takes pictures of your brain.

The technologist will help you be comfortable. The imaging will take 35 minutes. You must not move during the time the camera is taking pictures. If you move, the pictures will be blurry and may have to be repeated. The entire test should take about one hour.

Because SPECT uses radiation, you may not have a family member or friend in the room during the exam.

What will I feel during the scan?

• Some minor discomfort during a nuclear medicine procedure may arise from the IV. 
• Lying still on the exam table may be hard for some patients. 
• Most of the radioactivity passes out of your body in urine or stool, while the remainder simply goes away over time.

Who interprets the results and how do I get them?

A doctor skilled in nuclear medicine will review and interpret the findings. He or she will not discuss the results with you, but will send a report to your doctor, who will give you the results.