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Helical scanning type X-ray CT apparatus with movable gantry

  • US 6,212,251 B1
  • Filed: 12/02/1998
  • Issued: 04/03/2001
  • Est. Priority Date: 12/03/1997
  • Status: Expired due to Term
First Claim
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1. A CT apparatus for scanning an object, comprising:

  • a CT gantry comprising an X-ray source configured to irradiate an X-ray while rotating about an object to be scanned and an X-ray detector configured to detect the X-ray penetrating through the object to be scanned;

    a moving unit comprising a dolly, said CT gantry being mounted on said dolly, said moving unit further comprising a driving source configured to continuously move the dolly together with the CT gantry on a floor with respect to the object to be scanned; and

    a detector configured to detect a moving distance of the CT gantry;

    whereby helical scanning of the object to be scanned can be accomplished by moving the CT gantry in succession while rotating the X-ray source about the object to be scanned.

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