MR phase-shift techniques are accurate for measuring high flow velocities and can be used to quantify various cardiovascular and vascular diseases.
Answers are grounded in this paper and cite their sources.
May enable noninvasive high-velocity flow quantification in cardiovascular disease; leaves open prospective clinical validation.
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.
No takes yet. Share an insight, caveat, or question.
Mostbeck et al. (1992) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: