System and method for real time measurement of detector offset i

Details System and method for real time measurement of detector offset i System and method for real time measurement of detector offset i

1998-10-23

2000-11-14

Bruce, David V.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 10, 378 20, 378901, A61B 603

Patent

active

061480584

ABSTRACT:
A rotating-patient computed tomography scanning system in which the detector offset is measured in real time for each scan. At least one x-ray--absorbent reference structure is disposed in the field of view, so that a projection of the reference structure is present in every view of the patient. The position of the reference structure can be expressed in terms of the detector offset for each view of the patient. The detector offset for a given image can therefore be determined at the time the image data is obtained. The offset value is used in the data obtained from the current scan to reconstruct images that are free of artifacts that are caused by errors in the detector offset.

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