Charged Particles in Medical Diagnosis

  • George T. Y. Chen
  • William R. Holley
Part of the Ettore Majorana International Science Series book series (EMISS, volume 2)

Abstract

Conventional x-ray radiography is based on the detection of normal and diseased states by recording the attenuation of photons. The attenuation of photons is dependent upon both the electron density and atomic number integrated through the x-ray path. Although the use of contrast agents is of considerable help, one of the important limitations of x-ray radiography has been to detect the size, shape, and position of soft tissue tumors accurately. This is due in part to the similar atomic composition of soft tissue tumors and normal surrounding tissue. Prior to CT x-ray imaging, the presence of large abdominal masses was frequently determined by the extent of distortion and displacement of adjacent anatomical structures filled with contrast media rather than by direct imaging of the mass.

Keywords

Proton Beam Medical Diagnosis Soft Tissue Tumor Pulse Height Analysis Monobasic Potassium Phosphate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • George T. Y. Chen
    • 1
  • William R. Holley
    • 1
  1. 1.Biology and Medicine DivisionLawrence Berkeley LaboratoryBerkeleyUSA

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