Method for adaptively modulating the power level of an x-ray tub

Details Method for adaptively modulating the power level of an x-ray tub Method for adaptively modulating the power level of an x-ray tub

1997-04-01

1998-10-13

Wong, Don

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378 16, 378145, H05G 120

Patent

active

058223932

ABSTRACT:
In a method for adaptively modulating the power level of an x-ray tube of a computer tomography (CT) system for reducing an x-ray dose of an x-ray beam radiating through a patient and reaching detector means of said CT system during the acquisition of projections of body slices of the patient, the value of the maximum attenuation level per projection is established out of the patient projection data acquired for the respective projection and stored in a memory. The value of the maximum attenuation level for the next projection is predicted based on at least one of the stored values of the maximum attenuation levels and the respective power level of the x-ray tube for the next projection is established. Finally the respective power level of the x-ray tube for the next projection is accordingly adjusted.

REFERENCES:
patent: 5379333 (1995-01-01), Toth
patent: 5400378 (1995-03-01), Toth

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