X-ray CT apparatus
AssigneeCanon Medical Systems Corporation
InventorsTomoyuki Netabayashi, Hirotaka Ujiie, Kazuki Gatayama, Atsushi Fukano
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Abstract
In one embodiment, An X-ray CT apparatus includes: a rotating body and processing circuitry configured to extract an anatomical landmark from a medical image of an object acquired by a first scan, identify a shape of an anatomical site of the object based on the anatomical landmark, and set scanning conditions of a second scan based on the shape of the anatomical site, the second scan including a tilt scan in which a scan is performed under a condition where the rotating body is tilted, the scanning conditions including at least a tilt angle of the tilt scan.
Claims11
An X-ray CT apparatus comprising:
- a rotating body in which an X-ray source configured to radiate X-rays and an X-ray detector configured to detect the X-rays are housed;
- and
- processing circuitry configured to
- extract an anatomical landmark from a medical image of an object acquired by a first scan,
- identify a shape of an anatomical site of the object to be examined based on the anatomical landmark,
- calculate, based on the identified shape, multiple values corresponding to multiple tilt angles of simulated tilt scans of the object, wherein the multiple values respectively correspond to doses of radiation of a region of the object including the anatomical site scanned by the simulated tilt scans respectively corresponding to the multiple tilt angles,
- determine, based on the calculated multiple values, a tilt angle among the multiple tilt angles such that (1) an entirety of the anatomical site is included in an imaging range and (2) a dose of the region is minimized, based on the shape of the anatomical site, and
- perform a second scan based on scanning conditions including the determined tilt angle, wherein the second scan is performed with the rotating body tilted at the determined tilt angle.
Dependencies are inferred from the claim text.