Increased precision in the intravascular arterial input function with flow compensation
نویسندگان
چکیده
منابع مشابه
Quantifying the Arterial Input Function*
t i o Measurement of absolute myocardial blood flow (MBF) and coronary flow reserve (CFR) is of great importance clinically. To make such measurements quantitatively, one must also measure the arterial input function (AIF). Many studies, including the one reported by Vasquez et al. (1) in this issue of iJACC, which focuses on rubidium-82 (Rb), have sought optimal ways to measure the AIF for a v...
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Background Quantitative myocardial perfusion imaging requires correct measurement of arterial Gd concentration as the input function (AIF). An underestimation of AIF Gd concentration will lead to overestimation of myocardial blood flow (MBF). One source of this underestimation is the T2* effect due to high Gd concentration in the AIF measurement. Despite the short echo time (0.65 ms) used in th...
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Background and Purpose—Perfusion-weighted imaging maps are used to identify critical hypoperfusion in acute stroke. However, quantification of perfusion may depend on the choice of the arterial input function (AIF). Using quantitative positron emission tomography we evaluated the influence of the AIF location on maps of absolute and relative perfusion-weighted imaging to detect penumbral flow (...
متن کاملMRI estimation of the arterial input function in mice.
RATIONAL AND OBJECTIVES Dynamic contrast-enhanced (DCE) MRI offers the potential to provide quantitative maps of tumor perfusion parameters and is therefore expected to play an important role in the study of cancer in small animal models. Extraction of such information from DCE-MRI data requires a methodology for determination of the arterial input function (AIF) for the target tissues. An MRI ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2019
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.27877