OBJECTIVES FIRST (Fractional Flow Reserve and Intravascular Ultrasound Relationship Study) aimed to determine the optimal minimum lumen area (MLA) by intravascular ultrasound (IVUS) that correlates with fractional flow reserve (FFR) and to assess the correlation between virtual histology IVUS and FFR for intermediate coronary lesions. BACKGROUND FFR is considered the gold standard for assessi...

In this prospective study, 36 patients with stage III non-small cell lung cancers (NSCLC), who underwent dynamic contrast-enhanced MRI (DCE-MRI) before concurrent chemo-radiotherapy (CCRT) were enrolled. Pharmacokinetic analysis was carried out after non-rigid motion registration. The perfusion parameters [including Blood Flow (BF), Blood Volume (BV), Mean Transit Time (MTT)] and permeability p...

The movement of water flow usually has history and path dependence. Fractional calculus is very suitable for describing the process with memory hereditary properties. In this study, order differential equation in Nash confluence system was extended from integer to fractional order. On basis Laplace transform, instantaneous unit hydrograph obtained, which used describe long-term basin system. Fu...

At the sub-meter scale, capillary retention occurs when two immiscible phases flow across heterogeneous media. It happens in upstream medium, and phase retained depends on heterogeneity order system wettability. This phenomenon has a major impact oil recovery hence requires comprehension. The analysis of spatial variation saturation along flowing domain is well established. However, literature ...

Hemodynamic analysis was conducted to determine uncertainty in clinical measurements of coronary flow reserve (CFR) and fractional flow reserve (FFR) over pathophysiological conditions in a patient group with coronary artery disease during angioplasty. The vasodilation-distal perfusion pressure (CFR-p(rh)) curve was obtained for 0.35- and 0.46-mm guide wires. Our hypothesis is that a guide wire...

Heyndrickx GR. Intracoronary and intravenous adenosine 50-triphosphate, adenosine, papaverine, and contrast medium to assess fractional flow reserve in humans. Circulation 2003;107:1877–1883. 21. Pijls N, van Son J, Kirkeeide R, De Bruyne B, Gould K. Experimental basis of determining maximum coronary, myocardial, and collateral blood flow by pressure measurements for assessing functional stenos...

This paper introduces a new fractional variational optical flow model, which combines the fractional derivative with the variational optical flow method, for motion estimation. In the model, the data term is a weighted least-squares fit of local brightness constraint function and the prior term is a fractional derivative penalty function. So the proposed model can be seen as generalizations of ...

OBJECTIVES This study examined the performance of percent aggregate plaque volume (%APV), which represents cumulative plaque volume as a function of total vessel volume, by coronary computed tomography angiography (CTA) for identification of ischemic lesions of intermediate stenosis severity. BACKGROUND Coronary lesions of intermediate stenosis demonstrate significant rates of ischemia. Coron...