Dynamic dose control in multi-slice CT scan

Details Dynamic dose control in multi-slice CT scan Dynamic dose control in multi-slice CT scan

1993-11-19

1995-03-21

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378108, 378110, A61B 600

Patent

active

054003784

ABSTRACT:
An x-ray CT system performs a multi-slice scan in which tube current is modulated to reduce the x-ray dose without increasing image noise. Scout data is acquired from which a relative attenuation function (RAF) is calculated to relate expected patient attenuation of the x-ray beam at each slice to a reference. Tube current commands (mA) for each slice are calculated from the RAF and used to acquire image data.

REFERENCES:
patent: 4624007 (1986-11-01), Muranushi
patent: 5103469 (1992-04-01), Tanaka

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