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Radiology, Vol 132, 739-742, Copyright © 1979 by Radiological Society of North America

ARTICLES

A hybrid computerized fluoroscopy technique for noninvasive cardiovascular imaging

DL Ergun, CA Mistretta, RA Kruger, SJ Riederer, CG Shaw and DP Carbone

The excellent linearity of digital image storage and retrieval permits hybrid analog-digital subtraction to extend the spatial resolution of two previously developed algorithms which employed entirely digital apparatus. A low resolution, time-integrated preinjection digital mask image is reconverted to analog form and subtracted from live analog video images of iodine administered by peripheral intravenous injection to produce a high resolution display of the cardiovascular system with contrast ten times greater than conventional fluoroscopy. Preliminary studies in dogs are compared with images obtained with our digital subtraction algorithms.


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