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Color‐Coded Image‐Directed Doppler Sonography Compared with Digital Subtraction Angiography in the Follow‐Up of Percutaneous Vascular Endoprostheses
Author(s) -
Vorwerk Dierk,
Guenther Rolf W.,
Gehl Hans-Bjoern,
Bohndorf Klaus
Publication year - 1990
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1990.18.8.631
Subject(s) - medicine , radiology , digital subtraction angiography , subtraction , angiography , image subtraction , color doppler , doppler effect , percutaneous , nuclear medicine , ultrasonography , image processing , binary image , physics , mathematics , arithmetic , astronomy , artificial intelligence , computer science , image (mathematics)
Color‐coded image‐directed Dopplersonography (CCIDS) was used in the follow‐up of self‐expandable vascular endoprosthesesand was compared with the results of digital subtraction angiography and Doppler pressure indices. The stents were implanted in iliac and femoral arteries or hemodialysis fistulae of 26 patients. The aim of the study was to evaluate the potential of the new imaging method to identify local flow patterns inside of vascular endoprostheses. The stents were identified by sonographyin all cases; laminar flow was represented in CCIDS by homogeneous Doppler signals. In case of a distinctly reduced lumen, intravenous digital subtraction angiography (DSA) and CCIDS were both abletoidentify the stenotic process; however, CCIDS was superior in the demonstration of minute flow irregularities. No different flow patterns were detected in comparing recent with older vascular implants.