PET stands for positron emission tomography. A PET scan can show how physique tissues are working, as well as what they seem like. It may also help to diagnose and stage a cancer. This helps your physician decide which remedy you need and whether your therapy is working. A PET scan may sometimes inform if an space within the body is scar tissue or an active cancer.
PET is each a medical and research tool. It is used heavily in scientific oncology ( medical imaging of tumors and the seek for metastases ), and for clinical analysis of certain diffuse brain diseases akin to these causing varied forms of dementias. PET can be an important analysis device to map regular human mind and heart function, and assist drug development.
A PET scan includes the painless injection of a small amount of a ‘positron-emitting’ radioactive material (referred to as a radiopharmaceutical). Images of the physique are then taken utilizing a PET scanner. The digital camera detects emissions coming from the injected radiopharmaceutical, and the computer hooked up to the digicam creates two and three-dimensional photographs of the world being examined.
The dose of x-rays or radioactive supplies used in nuclear drugs imaging can differ broadly. Dose is dependent upon the type of process and body half being examined. In normal, the dose of radiopharmaceutical given is small and people are uncovered to low ranges of radiation throughout the take a look at. The potential health dangers from radiation exposure are low compared with the potential advantages. There are no identified long-term opposed results from such low-dose publicity.