Controlled optimization of relative exposure levels in dual ener

Details Controlled optimization of relative exposure levels in dual ener Controlled optimization of relative exposure levels in dual ener

1991-11-29

1992-12-08

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

358111, H05G 164

Patent

active

051704218

ABSTRACT:
A method for obtaining high quality images in dual energy digital subtraction angiography (DSA) with reduced signal to noise ratio (SNR) while simultaneously reducing patient X-ray exposure utilizes a larger aperture for the low-energy beam to obtain a lower patient exposure and a smaller aperture for the high-energy X-ray beam to obtain a decrease in image noise.

REFERENCES:
patent: 4442537 (1984-04-01), Haendle

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