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Titolo:
Cardiac motion of coronary arteries: Variability in the rest period and implications for coronary MR angiography
Autore:
Wang, Y; Vidan, E; Bergman, GW;
Indirizzi:
Cornell Univ, Joan & Sanford I Weill Med Coll, Dept Radiol, New York, NY 10021 USA Cornell Univ New York NY USA 10021 l, Dept Radiol, New York, NY 10021 USA Cornell Univ, Joan & Sanford I Weill Med Coll, Dept Med, New York, NY 10021 USA Cornell Univ New York NY USA 10021 Coll, Dept Med, New York, NY 10021 USA
Titolo Testata:
RADIOLOGY
fascicolo: 3, volume: 213, anno: 1999,
pagine: 751 - 758
SICI:
0033-8419(199912)213:3<751:CMOCAV>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESPIRATORY FEEDBACK MONITOR; BREATH-HOLD; FAT-SATURATION; NAVIGATOR-ECHO; ARTIFACTS; ACQUISITION; REDUCTION; CONTRAST; HEART;
Keywords:
coronary angiography; coronary arteries, MR; heart, flow dynamics; magnetic resonance (MR), artifact;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, Y Cornell Univ, Joan & Sanford I Weill Med Coll, Dept Radiol, 1300 York Ave,New York, NY 10021 USA Cornell Univ 1300 York Ave New York NY USA 10021 ork, NY 10021 USA
Citazione:
Y. Wang et al., "Cardiac motion of coronary arteries: Variability in the rest period and implications for coronary MR angiography", RADIOLOGY, 213(3), 1999, pp. 751-758

Abstract

PURPOSE: To measure the duration of the rest period in the cardiac cycle, a parameter vital to data acquisition in coronary magnetic resonance (MR) angiography. MATERIALS AND METHODS: Motion of coronary arteries was measured in 13 patients by using breath-hold, biplane, conventional angiography, with frontal and :: lateral projections of the left and right coronary arteries acquiredat 30 frames per second. The time courses of the coordinates of bifurcations of proximal parts of the coronary arteries were measured, from which therest period (motion < 1 mm in orthogonal axes), velocity, displacement range, motion correlation, and reproducibility from heartbeat to heartbeat were estimated. RESULTS: Both the motion pattern and the amplitude varied substantially from patient to patient. The rest period varied from 66 to 333 msec (mean, 161 msec) for the left coronary artery and from 66 to 200 msec (mean, 120 msec) for the right coronary artery. CONCLUSION: The rest period for coronary arteries in the cardiac cycle varies substantially from patient to patient, which may cause quality to be inconsistent in current coronary MR angiography. A cardiac motion image priorto coronary data acquisition (preimage) may be used to estimate the optimal duration and timing in the cardiac cycle for coronary MR angiography.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 04:07:42