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The application of breath hold phase velocity mapping techniques to the measurement of coronary artery blood flow velocity: Phantom data and initial in vivo results
Author(s) -
Keegan Jennifer,
Firmin David,
Gatehouse Peter,
Longmore Donald
Publication year - 1994
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910310509
Subject(s) - pulsatile flow , imaging phantom , flow velocity , coronary arteries , blood flow , artery , diastole , hemodynamics , cardiac cycle , medicine , cardiology , flow (mathematics) , biomedical engineering , mathematics , nuclear medicine , geometry , blood pressure
A segmented k ‐space breath hold phase velocity mapping technique has been developed for the study of coronary artery blood flow velocity. In vitro validation has been performed using a number of pulsatile flow phantoms and the accuracy of the technique for determining the velocity increase at the site of a stenosis demonstrated in several phantom models. Examples of both in‐plane and through‐plane velocity maps of the left anterior descending and right coronary arteries of normal subjects in early diastole are presented. In one subject, through‐plane velocity maps were obtained in the right and left anterior descending arteries throughout the cardiac cycle in order to generate flow velocity time curves. The problems associated with coronary artery velocity mapping are discussed.