Tilt image scan method and reconstruction method and apparatus
OwnerXimiao CAOinventor
Life of this patent
Estimating the term…
Abstract
A tilt image scan method includes acquiring reconstruction parameters of a target tilt image, determining on the basis of the reconstruction parameters the minimum beam widths of the rays that should be emitted from the tube at each angle, and controlling the collimator at each angle where the tube locates so that the beam width after the beam passes through the collimator is equal to the corresponding minimum beam width thereby scanning the subject.
Claims20
A tilt image scan for scanning a subject using an X-ray beam having a plurality of X-rays emitted from a tube through a collimator, the tilt image scan method comprising:
- acquiring reconstruction parameters of a target tilt image;
- determining minimum beam widths of the X-rays to be emitted from the tube at each angle based on the reconstruction parameters;
- and
- controlling the collimator at each angle where the tube locates so that a beam width of the X-ray beam after the X-ray beam passes through the collimator is equal to the corresponding minimum beam width, thereby scanning the subject.
A tilt image reconstruction method for use in scanning a subject by an X-ray beam having a plurality of X-rays emitted from a tube through a collimator, the tilt image reconstruction method comprising:
- acquiring reconstruction parameters of a target tilt image;
- determining minimum beam widths of the X-rays to be emitted from the tube at each angle based on the reconstruction parameters;
- controlling the collimator at each angle where the tube locates, so that a beam width of the X-ray beam after the X-ray beam passes through the collimator is equal to the corresponding minimum beam width, thereby scanning the subject;
- and
- reconstructing the target tilt image based on data obtained from the scan.
A tilt image scan apparatus comprising:
- an X-ray tube configured to emit an X-ray beam that includes a plurality of X-rays;
- a collimator through which the X-ray beam passes;
- an acquisition unit configured to acquire reconstruction parameters of a target tilt image;
- a first unit for determining configured to determine minimum beam widths of the X-rays to be emitted from the tube at each angle;
- and
- a control unit configured to control the collimator at each angle where the tube locates so that a beam width after the X-ray beam passes through the collimator is equal to the corresponding minimum beam width, thereby scanning the subject.
Dependencies are inferred from the claim text.