[Computer-aided image processing of digital subtraction angiographs of the pelvis-leg region].
Within a clinical study on possible regression of arteriosclerotic processes in humans i.v. DSA-images were made and objectively evaluated. For the first time the digital system Densitron 4 was used for this. The image processing nodes of contrast enhancement, gray-scale and color conversion and stenosis evaluation by density sums are demonstrated for two selected cases from 52 intravenous digital subtraction angiographies of the pelvis-leg region. The results show, that digital image processing can enhance information-relevant detail. The preprocessing of densitometric values accounts for the third dimension of the vessel in its morphologic description. Compared with subjective visual evaluation the digital image interpretation facilitates a much higher degree of detectability of small detail located near the vessel walls and a more objective and reproducible evaluation of the degree of stenosis.
Rühlmann
C
C
Klinik für Innere Medizin des Bereiches Medizin der Karl-Marx-Universität Leipzig, DDR.
Kriesel
K
K
Kuklinski
B
B
Kriesel
W
W
Freyer
K
K
Steinert
M
M
Treutler
H C
HC
D015901:Angiography, Digital Subtraction; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007866:Leg / Q000098:blood supply*; D010388:Pelvis / Q000098:blood supply*
Computergestützte Bildverarbeitung digitaler Subtraktionsangiographien des Becken-Bein-Gebietes.