What is a gamma camera and how does it work?
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. The gamma camera itself does not emit any radiation.
What does a gamma camera detect?
What is a gamma camera? A gamma camera is a machine that is able to detect and make images from the very small amounts of ionising radiation emitted from patients having a nuclear medicine study. The gamma camera usually has a table, often narrow, on which the patient lies. The images are taken using the camera ‘head’.
Is a gamma camera dangerous?
Gamma camera studies often take hours. At least five patients and hospital staffers have been injured in the past year because of malfunctions in gamma camera imaging devices, according to the ECRI Institute. Gamma cameras are found in most U.S. hospitals.
Does a PET scan use a gamma camera?
Further increasing the availability of PET imaging is a technology called gamma camera systems (devices used to scan patients who have been injected with small amounts of radionuclides and currently in use with other nuclear medicine procedures). These systems have been adapted for use in PET scan procedures.
Why is nuclear medicine bad?
unwanted health effects, including cancer. used in nuclear medicine and radiology leads to such effects. exposure to ionizing radiation, no matter how small, carries some small risk of unwanted health effects, including cancer.
How long does a gamma camera scan take?
A large camera (called a gamma camera) scans you and picks up radioactivity. You have the scan in either the medical physics, nuclear medicine or x-ray department at the hospital. The scan can take between 30 to 60 minutes, but you’ll be at the hospital for several hours.
When would a gamma camera be used?
Scintigraphy (“scint”) is the use of gamma cameras to capture emitted radiation from internal radioisotopes to create two-dimensional images. SPECT (single photon emission computed tomography) imaging, as used in nuclear cardiac stress testing, is performed using gamma cameras.
What is Gamma Imaging?
Introduction. Imaging with gamma rays is creating medical diagnostic images using gamma rays emitted by tiny amounts of radionuclides administered to patients, photons of penetrating electromagnetic radiation emitted from an atomic nucleus.
How are gamma rays used for diagnosis?
Gamma rays are widely used in medicine and specifically in the area of oncology to treat malignant and cancerous tumors during a process called gamma knife surgery. In this type of treatment, concentrated beams of gamma rays are directed at tumors in order to kill cancerous cells.
How do gamma rays hurt you?
The extremely high energy of gamma rays allows them to penetrate just about anything. … This makes gamma rays very dangerous. They can destroy living cells, produce gene mutations, and cause cancer. Ironically, the deadly effects of gamma rays can be used to treat cancer.
How can gamma rays detect cancer?
Use and importance in clinical medicine
Gamma rays are mostly used in the radiotherapy/ radiooncology to treat cancer. They can also be used to spot tumours. Gamma rays can kill living cells and damage malignant tumor. The Gamma radiation intensity decreases exponentially with the depth of penetration.
Is Nuclear Medicine dangerous?
While nuclear medicine tests do expose patients to radiation, which can be dangerous, the radiotracers use such small amounts of radioactive materials that the potential benefits typically far outweigh the potential risks.
Is it safe to be around someone after a PET scan?
As a precaution, you may be advised to avoid prolonged close contact with pregnant women, babies or young children for a few hours after having a PET scan because you’ll be slightly radioactive during this time.
How long are you radioactive after a PET scan?
However, because radioactive material will remain in your body for about 12 hours, you’ll want to limit your contact with both pregnant women and infants during this time. Drink plenty of fluids after the test to help flush the tracers out of your system. Generally, all tracers leave your body after two days.