Open AccessMR measurement of blood flow in the cardiovascular system.
Author(s) -
G. Mostbeck,
G.R. Caputo,
Charles B. Higgins
Publication year - 1992
Publication title -
american journal of roentgenology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 196
eISSN - 1546-3141
pISSN - 0361-803X
DOI - 10.2214/ajr.159.3.1503004
Subject(s) - medicine , blood flow , cardiology , heart disease , flow measurement , flow (mathematics) , disease , valvular heart disease , radiology , biomedical engineering , mechanics , physics
Methods for measurement of blood flow with MR were devised many years ago but have been used for diagnosis in only the past few years. The two methods of measurement that have been used most extensively are based on the principles of time of flight and phase shift. A number of factors can influence the accuracy of MR measurements of blood flow. In vitro studies using flow phantoms have verified the accuracy of the phase-shift technique for measuring flow velocities exceeding 5 m/sec, which for practical purposes, encompasses the peak flow encountered in cardiovascular disorders. The flow measurements have been used to quantify valvular heart disease, congenital heart disease, pulmonary arterial disease, thoracic aortic disease, and peripheral vascular disease.