S

Positron Emission Tomography

By Austin Cheung and Tony Jin

About

Radiology procedure

Used by oncologists, neurologists, neurosurgeons, cardiologists, etc.

How It Works

Inject radioactive substance (radionuclide

Gamma rays are released

Machine detects rays

Rays form image

Why It Works

Radionuclide release gamma rays when metabolized

Parts of brain metabolize at different rates according to activity

Cancer

Cancer cells consume the sugar

Release photons that are captured by ring detector

3D image is formed, showing cancer tissues