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Titolo:
SIGNIFICANCE OF ULTRAFAST COMPUTED-TOMOGR APHY IN THE ASSESSMENT OF CORONARY-BYPASS GRAFT PATENCY
Autore:
KNEZ A; VONSMEKAL A; HABERL R; SPIEGL F; REICHART B; REISER M; STEINBECK G;
Indirizzi:
UNIV MUNICH,MED KLIN 1,MARCHIONINISTR 15 D-81366 MUNICH GERMANY UNIV MUNICH,INST RADIOL DIAGNOST D-81366 MUNICH GERMANY UNIV MUNICH,HERZCHIRURG KLIN D-81366 MUNICH GERMANY
Titolo Testata:
Zeitschrift fur Kardiologie
fascicolo: 9, volume: 85, anno: 1996,
pagine: 629 - 634
SICI:
0300-5860(1996)85:9<629:SOUCAI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
GER
Soggetto:
ARTERY DISEASE; CINE-CT; SCINTIGRAPHY; SURGERY;
Keywords:
ULTRAFAST COMPUTED TOMOGRAPHY; ANGIOGRAPHY; CORONARY BYPASS; BYPASS OCCLUSION; BYPASS GRAFT PATENCY;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
A. Knez et al., "SIGNIFICANCE OF ULTRAFAST COMPUTED-TOMOGR APHY IN THE ASSESSMENT OF CORONARY-BYPASS GRAFT PATENCY", Zeitschrift fur Kardiologie, 85(9), 1996, pp. 629-634

Abstract

Bypass graft patency with ultrafast computed tomography (= Electron Beam Tomography, EBT) was examined in 72 bypass grafts (47 saphenous veins, 25 internal mammary arteries) in 30 patients and compared with coronary angiography. Angiography was performed a mean of 4.4 +/- 3.5 months (range 1-13) from the EBT examination. Contrast material (120 ml)was continuously administered via a peripheral vein and 40 axial slices (3 mm slice thickness, 110 ms scan time) without overlap sequences were obtained, ECG triggered with the single slice scanner mode. Imaging of internal mammary artery grafts began at the thoracic inlet, for saphenous vein grafts, at the undersurface of the aorta. Sixty of 63 angiographically patent bypass grafts were determined patent by EBT (sensitivity 95%), 8 bypass grafts could not be detected by EBT, and 9 were angiographically occluded (specificity 89%). Twenty-four of 25 internal mammary artery grafts were patent at EBT and coronary angiography, one was occluded. In 27 of the 30 patients (90%), all of the angiographically patent grafts could be confirmed as open with EBT. Obstructions of 10 grafts could not be visualized with EBT. Graft insertion into native coronary vessels could be visualized in axial slices, although morphologic quantification of graft insertion stenosis (75-90%) in two cases was not possible. Three-dimensional reconstruction of the 40 axial slices allowed graft anatomy to be delineated. Visualization of bypass insertion into the native coronary vessel was less successful because of opacification of the left and right ventricle. Electron beamcomputed tomography is a minimally invasive procedure capable of evaluating the patency of saphenous vein and internal mammary artery grafts. The morphologic quantification of graft obstruction and visualization of the insertion of the bypasses into the native coronary vessels is less successful with present technology and imaging modalities.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 06:42:54