CT Scan

In Computed Tomography, a source of X-rays is rotated around a plane of the body, being picked up by a series of detectors.

 

As a CT uses X rays, the greater the atomic number, the greater a molecule's ability to stop the CT. Bone is white, while air is black.

 

CT and the Brain

While imaging the brain, from white to black, other tissues include:

  • extravascular blood
  • an enhanced tumour
  • fat
  • brain
  • cereberospinal fluid

CT can be used to detect:

  • acute and subacute hemorrhages
  • skull trauma

 

Contrast Nephro

 

 

2500 kids die yearly in North America from CT

amount from one scan equal to outskirts of Hiroshima