SPECT imaging is performed by using a gamma camera to acquire multiple 2-D images ( also called projections ), from multiple angles.
32.
Technetium-99m ( 99m Tc ) is a metastable nuclear isomer which emits gamma rays which can be detected by a gamma camera.
33.
The iodine is taken up by the thyroid gland and a gamma camera is used to functional images of the thyroid for diagnosis.
34.
First attempts to obtain SPECT images of rodents with a high resolution were based on use of pinhole collimators attached to convectional gamma cameras.
35.
Dependant on their scope of practice and training, they may also be called upon to operate diagnostic screening equipment, including magnetic resonance imagers and gamma cameras.
36.
After a suitable waiting period to ensure proper distribution of the radiotracer, scans are acquired with a gamma camera to capture images of the blood flow.
37.
The iodine introduced during manufacture is a radioactive isotope, I-123, and it is the properties of this isotope that makes the solution visible to a gamma camera.
38.
This test procedure typically involves two tests performed in connection with each other : an iodine uptake test and a scan ( imaging ) with a gamma camera.
39.
The energy of the photon, 159 keV, is ideal for the NaI ( sodium iodide ) crystal detector of current gamma cameras and also for the pinhole collimators.
40.
Special sensors are used in various applications such as thermography, creation of multi-spectral images, video laryngoscopes, gamma cameras, sensor arrays for x-rays, and other highly sensitive arrays for astronomy.
