Hybrid subtraction for improved arteriography

Radiology
W R Brody

Abstract

A hybrid subtraction method to reduce the motion sensitivity of temporal subtraction for intravenous arteriography is described. Hybrid subtraction uses dual-energy scanned projection radiography to provide pre- and post-contrast images with the soft tissues subtracted. These pre- and post-contrast soft-tissue-cancelled images are then subtracted. Because involuntary motion (such as swallowing or bowel peristalsis) often affects soft tissues primarily, this hybrid technique provides better visualization of carotid and abdominal arteries than temporal or dual-energy subtraction alone.

Citations

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