The first is CAT, or Cancer Assisted Tomography. They can shoot high energy cancer rays (a particular type of radiation) through your skull and measure what comes out the other side. Tumors sometimes absorb more cancer rays (also called x-rays) than other tissue, basically creating a shadow they can see. This doesn't work all that great, also the cancer rays are also millions of times more likely to cause cancer than your iphone.
The other type of scan is nuclear magnetic resonance imaging or NMRI. In NMRI, they stick your head into a big magnet. Then they take a big cell phone transmitter, point it at your brain and turn it on (i.e., sending radiation into your brain). This (combined with the magnet) basically turns your brain into a nuclear powered cell phone transmitter. Then an RF coil inside the Nuclear MRI machine picks up the calls your brain makes, and they get a picture out.
Did I use the words nuclear and radiation frequently enough to make you afraid?
The first is CAT, or Cancer Assisted Tomography. They can shoot high energy cancer rays (a particular type of radiation) through your skull and measure what comes out the other side. Tumors sometimes absorb more cancer rays (also called x-rays) than other tissue, basically creating a shadow they can see. This doesn't work all that great, also the cancer rays are also millions of times more likely to cause cancer than your iphone.
The other type of scan is nuclear magnetic resonance imaging or NMRI. In NMRI, they stick your head into a big magnet. Then they take a big cell phone transmitter, point it at your brain and turn it on (i.e., sending radiation into your brain). This (combined with the magnet) basically turns your brain into a nuclear powered cell phone transmitter. Then an RF coil inside the Nuclear MRI machine picks up the calls your brain makes, and they get a picture out.
Did I use the words nuclear and radiation frequently enough to make you afraid?