PET Scans: Get that feeling coursing through your veins

Okay, this paper is going to deal with one medical application of radioisotopes, and if you don’t know what they are, research them; I only have a certain amount of space to write. Ready then? Well then, tally ho!
First, let’s address what a PET scan looks for, then we can tackle the bigger issues surrounding it. A PET scan is a diagnostic procedure used to determine whether or not something (i.e., a tumour) is malignant. (Also, PET stands for positron emission tomography.)
How it does this is simple. A radioisotope (aka, in this procedure, a tracer) is inserted into your bloodstream, where it flows right on down to the target areas (the area being scanned). There it will emit positrons (it was altered to be allowed to do such) and those positrons will collide with electrons, creating gamma rays. Those rays are picked up in that huge old PET scanner machine they put you in. Those rays will look slightly different and the ...