PT  - JOURNAL ARTICLE
AU  - Brant-Zawadzki, Michael
AU  - Gould, Robert
AU  - Norman, David
AU  - Newton, Thomas H.
AU  - Lane, Barton
TI  - Digital Subtraction Cerebral Angiography by Intraarterial Injection: Comparison with Conventional Angiography
DP  - 1982 Nov 01
TA  - American Journal of Neuroradiology
PG  - 593--599
VI  - 3
IP  - 6
4099  - http://www.ajnr.org/content/3/6/593.short
4100  - http://www.ajnr.org/content/3/6/593.full
SO  - Am. J. Neuroradiol.1982 Nov 01; 3
AB  - For 4 months, a prototype digital subtraction system was used to obtain images of the cerebral vasculature after intraarterial contrast injections. In 12 instances, the intraarterial injections were recorded with both a digital subtraction unit and conventional direct magnification film-screen system. The digital subtraction and conventional film subtraction images were compared and graded for quality and information content by three skilled observers. In addition, quantitative measurements of contrast-detail performance and spatial resolution were obtained on both the digital system and the screen-film imaging chain. In a clinical setting, both the digital subtraction and conventional film-screen systems provided similar quality images and angiographic information. Contrast-detail curves demonstrated that digital subtraction angiography outperformed conventional film technique for low-contrast objects. Digital subtraction angiography also reduced the time required to obtain the angiogram, markedly reduced film cost, and lowered the contrast agent burden.