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Titolo:
QUANTITATION OF CIRCUMFERENTIAL SUBPIXEL VESSEL WALL POSITION AND WALL SHEAR STRESS BY MULTIPLE SECTORED 3-DIMENSIONAL PARABOLOID MODELING OF VELOCITY-ENCODED CINE MR
Autore:
OYRE S; RINGGAARD S; KOZERKE S; PAASKE WP; SCHEIDEGGER MB; BOESIGER P; PEDERSEN EM;
Indirizzi:
AARHUS UNIV HOSP,SKEJBY SYGEHUS,DEPT CARDIOTHORAC & VASC SURG T DK-8200 AARHUS N DENMARK AARHUS UNIV HOSP,SKEJBY SYGEHUS,INST EXPT CLIN RES,MR RES CTR DK-8200AARHUS N DENMARK UNIV ZURICH,INST BIOMED ENGN & MED INFORMAT ZURICH SWITZERLAND SWISS FED INST TECHNOL ZURICH SWITZERLAND
Titolo Testata:
Magnetic resonance in medicine
fascicolo: 5, volume: 40, anno: 1998,
pagine: 645 - 655
SICI:
0740-3194(1998)40:5<645:QOCSVW>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN CAROTID BIFURCATION; HUMAN ABDOMINAL-AORTA; BLOOD-FLOW; ARTERY; ATHEROSCLEROSIS; QUANTIFICATION; ACCURACY; ASSOCIATION; RESOLUTION; PRECISION;
Keywords:
CAROTID ARTERIES; HEMODYNAMICS; MAGNETIC RESONANCE IMAGING; VESSEL SEGMENTATION; WALL SHEAR STRESS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
S. Oyre et al., "QUANTITATION OF CIRCUMFERENTIAL SUBPIXEL VESSEL WALL POSITION AND WALL SHEAR STRESS BY MULTIPLE SECTORED 3-DIMENSIONAL PARABOLOID MODELING OF VELOCITY-ENCODED CINE MR", Magnetic resonance in medicine, 40(5), 1998, pp. 645-655

Abstract

Methods are lacking for accurate, noninvasive circumferential edge detection and wall shear stress calculation. Using standard MR phase contrast sequences, parts of the velocity profiles were fitted to a multiple sectored three-dimensional paraboloid model enabling exact calculation of vessel wall position and wall shear stress in 24 locations evenly distributed around the luminal vessel wall. The model was evaluated by in vitro scans and computer simulations and applied to the commoncarotid artery of humans. In vitro, the luminal area of a glass tube was assessed with an error of 0.9%. Computer simulations of peak systolic data revealed errors of +/-0.9% (vessel area) and +/-3.25% (wall shear stress), The in vivo results showed substantial difference between anterior and posterior wall shear stress values due to skewed velocity profiles. A new noninvasive method for highly accurate measurement of circumferential subpixel vessel wall position and wall shear stresshas been developed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 18:21:58