Vincent E Steward

US Patent:

39808858, Sep 14, 1976

Filed:

Sep 6, 1974

Appl. No.:

5/503619

Inventors:

Vincent William Steward - Chicago IL
Andreas Martin Koehler - Concord MA

International Classification:

G01N 2300

US Classification:

250307

Abstract:

Beams of monoenergetic protons or other charged ions are passed through the living human body to detect abnormalities and obstructions in body tissue, which abnormalities and obstructions are visualized as density variations in the particle image emerging from the body part under investigation. The particles used are preferably protons having an energy of 100 to 300 MeV, more especially 200 to 300 MeV. The method is of use in detecting inter alia tumors, blood clots, infarcts, soft tissue lesions and multiple sclerosis in patients without exposure to high radiation dosages.