What is it?
The people working with it use a gamma camera at multiple angles to take 2-D images and then a computer program puts all together for a 3-D view. Radioactive tracer material is detected in the body by the gamma rays shot at it. To get these images he camera is rotated around the patient. Each projection is stopped at 3-6 degrees and then an image is taken for 15-20 seconds. A whole scan time is about 15-20 minutes. A two-headed camera can help speed up the process.
How is it Used?
The heart is hard study if the person is alive. The SPECT can take images of the myocardial perfusion, thickness, and contraction of the various parts. It can also be used to study the brain. The tracer travels with the blood and gives an "active view" of what is happening deep inside the brain. SPECT makes reconstruction of the deep tissues much easier. Though many things can affect the image such as the activity of the bladder patient movement, different algorithms have been made to touch up the images
Image of the Lung. Many angles can be viewed.
3-D visual of the brain
