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X-ray detector for CT scanners

  • US 4,947,412 A
  • Filed: 11/23/1988
  • Issued: 08/07/1990
  • Est. Priority Date: 10/20/1988
  • Status: Expired due to Fees
First Claim
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1. A medical diagnostic scanner comprising:

  • a source of ionizing radiation for projecting ionizing radiation across an examination region;

    a plurality of ionizing radiation detectors disposed across the examination region from the radiation source, each ionizing radiation detector including;

    a scintillation crystal having an overhanging cross portion, having a first length and a lower portion having a second length wherein the first length is longer than the second length, the scintillation crystal defining an ionizing radiation receiving face along a length of the cross portion and a second face disposed generally parallel to the ionizing radiation receiving face across the lower portion;

    a photodiode having a photosensitive face that has at least one lead wire connected adjacent one end of the photosensitive face, the photosensitive face being coupled in an optically transmissive relationship with the second face of the scintillation crystal such that the scintillation crystal cross portion is displaced from and overhangs a portion of the diode photosensitive face adjacent the lead wire.

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