Analysis of partial volume effects on arterial input functions using gradient echo: A simulation study
نویسندگان
چکیده
منابع مشابه
Analysis of partial volume effects on arterial input functions using gradient echo: a simulation study.
Absolute blood flow and blood volume measurements using perfusion weighted MRI require an accurately measured arterial input function (AIF). Because of limited spatial resolution of MR images, AIF voxels cannot be placed completely within a feeding artery. We present a two-compartment model of an AIF voxel including the relaxation properties of blood and tissue. Artery orientations parallel and...
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Pre-bolus quantification of arterial input functions by non-steady-state analysis of gradient-echo dynamic imaging
Introduction Reproducible perfusion estimates from DCE-MRI data are heavily contingent on reproducible estimation of the arterial input function (AIF), and it is well known that patient-specific AIFs are necessary to achieve optimal estimates. Measuring the AIF is one solution, and this is often achieved by finding a vessel within the dynamic imaging field-of-view (FOV), but this presents sever...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2009
ISSN: 0740-3194
DOI: 10.1002/mrm.21849