Cardiothoracic Imaging
Contents Anatomy Techniques Findings Cases References
P

N


Diagnostic imaging modalities - Radiographic gray scales



COMMENTS

The range of densities that an X ray can display is the key to its usefulness as a diagnostic imaging tool. The X ray tube emits a large burst of X rays, generated by bombarding a tungsten target in a vacuum tube with high energy electrons (40 to 150 keV). Many of these X rays when directed toward a person will pass through the body and strike a fluorescent screen in a cassette, exposing a light-sensitive film adjacent to it.

More...


Audio notes




SHORTCUTS: See the Contents page for complete listing of all pages and topics.

   
Jump to top.
 
P

N



YSMInfo Library Calendar Directories Search YSM Home

Copyright 2004, Yale University School of Medicine. All rights reserved.
December 18, 2004 (PL)
version b.003