Flow quantification using low‐spatial‐resolution and low‐velocity‐resolution velocity images
نویسندگان
چکیده
منابع مشابه
Transverse flow-velocity quantification using optical coherence tomography with correlation
We describe a method that uses classic optical coherence tomography to measure the transverse fluid-flow velocity quantitatively without knowing the Doppler angle. An intensity based cross-correlation calculation is taken point-to-pointly between two close cross sections of the scattering fluid to estimate the time delay for scattering particles passing through the two sections which are scanne...
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Background 4D phase contrast magnetic resonance blood flow measurements (4D PC-MR) is a promising tool for clinical assessment of cardiac function, but lack of independent validation may limit clinical adoption. Previous validation studies are limited by lack of pulsatility [1,2] or by the need of a post hoc correction factor to compensate for differences in experimental setup between 4D PC-MR ...
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Background Atrial fibrillation (AF) is an arrhythmia characterized by irregular electrical activity in the left atrium (LA). Thromboembolism is the most serious complication of AF, usually manifesting as stroke or systemic embolism (1). This is thought to be linked to the increased risk of thrombus formation in the LA due to a decrease in blood velocity (stasis) or flow abnormalities. A better ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 1999
ISSN: 0740-3194,1522-2594
DOI: 10.1002/(sici)1522-2594(199910)42:4<682::aid-mrm9>3.3.co;2-1