volume 9, issue 2, P129-139 1991
DOI: 10.1016/0730-725x(91)90001-3
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Abstract: Flow dephasing effects in NMR images can be significantly reduced by the use of gradient quasi-half-echo signals. They can also be reduced by moment-nulling techniques. In this paper, an efficient imaging pulse sequence, the flow-insensitive enhanced quasi-half-echo method is developed in which these two techniques are combined. This pulse sequence is used to reduce dephasing effects in images acquired to enhance blood vessels in gradient echo subtraction angiography. Both phase corrected and uncorrected quasi…

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