Variable dose application by modulation of x-ray tube current du

Details Variable dose application by modulation of x-ray tube current du Variable dose application by modulation of x-ray tube current du

1993-11-19

1995-01-03

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 8, 378108, A61B 600

Patent

active

053793331

ABSTRACT:
An x-ray CT system modulates x-ray tube current as a function of gantry angle to reduce the total patient dose without significantly increasing image noise. A scout scan is performed to acquire attenuation data which enables an optimal current modulation profile to be calculated for each slice in the scan.

REFERENCES:
patent: 4624007 (1986-11-01), Muranushi
patent: 5103469 (1992-04-01), Tanaka
U.S. patent application Ser. No. 854,227, filed May 19, 1986 and entitled "Dynamic Flux Intensity Control In Computer Tomography Systems".

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