Blood flow determination using recursive processing: a digital radiographic method

Temporal filtration of fluoroscopic video sequences is being used as an alternative to pulsed digital subtraction angiography. Using the same image processing architecture and a slight modification in processing logic a parametric image can be synthesized from such a temporally filtered image sequen...

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Bibliographic Details
Published inRadiology Vol. 149; no. 1; p. 293
Main Authors Kruger, R A, Bateman, W, Liu, P Y, Nelson, J A
Format Journal Article
LanguageEnglish
Published United States 01.10.1983
Subjects
Angiography - methods
Animals
Dogs
Filtration
Regional Blood Flow
Subtraction Technique
Technology, Radiologic
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Summary:Temporal filtration of fluoroscopic video sequences is being used as an alternative to pulsed digital subtraction angiography. Using the same image processing architecture and a slight modification in processing logic a parametric image can be synthesized from such a temporally filtered image sequence in virtual real time, i.e., an image sequence that spans T seconds takes exactly T seconds to process. Off-line computer processing is not required. Initial phantom studies imply that the time to maximum opacification (tmax) can be used to determine absolute and relative blood flow with a high confidence level (r greater than .989). Phantom and animal examples are presented.
ISSN:0033-8419
DOI:10.1148/radiology.149.1.6351164