CR image-based positioning for X-ray CT scan

Details CR image-based positioning for X-ray CT scan CR image-based positioning for X-ray CT scan

1997-02-18

1999-11-30

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 4, G01N 2300

Patent

active

059955813

ABSTRACT:
In X-ray CT scan, slice positions to be scanned by an X-ray CT scanner can be determined readily and accurately by substituting a CR image for a conventionally used scanogram. An X-ray diagnostic system comprises an X-ray fluoroscopy apparatus providing a CR(computed radiography) image composed of digital pixel values produced from X-rays transmitted through an object subjected to fluoroscopic X-rays. The system also comprises an X-ray CT scanner, coupled with x-ray fluoroscopy apparatus, providing a tomographic image of the object. The system further comprises an element for obtaining positional information required for tomographic imaging of the object using the CR image and an element for enabling the X-ray fluoroscopy apparatus and the X-ray CT scanner to use in common the positional information. As a result, for example, a slice position of the object, as the positional information, required for the X-ray CT scanner is obtained and provided for the X-ray CT scanner.

REFERENCES:
patent: 4649555 (1987-03-01), Matsubayashi
patent: 4730351 (1988-03-01), Heumann
patent: 5327474 (1994-07-01), Inoue et al.
patent: 5661772 (1997-08-01), Bar et al.

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