myocardial blood flow quantification
Quantification of Absolute Myocardial Blood Flow by Magnetic Resonance Perfusion Imaging
... GdCA-rich blood results in a progressive increase in signal intensity on T1-weighted pulse ...impaired blood flow and consequently less GdCA appear darker than nor- mally perfused areas ...
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Quantification of myocardial blood flow with 82Rb: Validation with 15O-water using time-of-flight and point-spread-function modeling
... Table 1 gives means and standard deviations of the per- cent differences (across seven subjects) in peak activity, tail activity, and AUC of uncorrected IDIFs with respect to AIFs. The peaks of the 82 Rb IDIFs were ...
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Fully automated, inline quantification of myocardial blood flow with cardiovascular magnetic resonance: repeatability of measurements in healthy subjects
... Although some of these results differ from those in our study and the intervals between scans were different from in our study, they do provide more evidence of the susceptibility of rest MBF to change and physiological ...
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Fully automated, inline quantification of myocardial blood flow with cardiovascular magnetic resonance: repeatability of measurements in healthy subjects
... and blood pool signals in order to avoid blood pool signal ...(LV) blood pool to esti- mate the arterial input function (AIF) used a low flip angle FLASH low resolution protocol with 2 echos such ...
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Quantification of resting myocardial blood flow velocity in normal humans using real-time contrast echocardiography. A feasibility study
... change blood flow, ...resting blood flow is maintained by arteriolar ...complete myocardial opacification after destruction) from a single stress MCE perfusion study, was recently shown ...
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In vivo characterization of rodent cyclic myocardial perfusion variation at rest and during adenosine induced stress using cine ASL cardiovascular magnetic resonance
... momentary blood flow is non- uniform through the cardiac cycle and occurs mainly in diastole when myocardial tension is ...perfusion quantification in the heart [38], in which free diffusivity ...
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Voxel wise quantification of myocardial blood flow with cardiovascular magnetic resonance: effect of variations in methodology and validation with positron emission tomography
... a flow rate of 50 ...MBF quantification were reconstructed into 19 time frames (1 × 10 s, 10 × 5 s, 3 × 20 s, 2 × 30 s, 3 × 60 s) on a 128×128 matrix using ordered subset expectation maximization (OSEM) ...
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Quantification of myocardial perfusion by cardiovascular magnetic resonance
... both blood flow and PS ...the quantification of blood flow, the other model parameters may appear as a nui- ...on blood flow often captures only a very limited view of ...
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Simultaneous quantification of myocardial and blood flow velocities based on duplex mode ultrasound imaging
... The performance of the method was evaluated using synthetic B-mode septum tissue mimicking image sequences (see Appendix A for calculation details). Matlab code (ver- sion 2011b, Mathworks, Nattick, MA, USA) for ...
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Myocardial t1 Mapping Techniques for Quantification of Myocardial Fibrosis
... of myocardial blood flow and previous studies, systolic reduction in myocardial volume [58-61] has been explained as a result of blood that is squeezed out of the coronary vasculature ...
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Quantification of myocardial blood flow with cardiovascular magnetic resonance throughout the cardiac cycle
... steeper myocardial time-intensity curves in dia- stole compared to systole ...of myocardial perfusion at only two different time points in the cardiac ...of myocardial ASL in humans to quantify MBF ...
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Hemodynamics, coronary blood flow, and myocardial metabolism in coronary shock; response to l norepinephrine and isoproterenol
... min. Myocardial oxygen extraction was above 70% and coronary sinus oxygen tension was below 22 mm Hg in most of the ...venous blood indicates the severity of myocardial ...
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Characterization of Flow Efficiency, Pulsatility, and Respiratory Variability in Different Types of Fontan Circuits Using Quantitative Parameters
... reverse flow and pressure stress, which may potentially expose the patients prone to development of Fontan complications, such as Fontan ...of flow efficiency, TCPC type Fontan circuits are more efficient ...
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Bench to bedside review: Contrast enhanced ultrasonography a promising technique to assess renal perfusion in the ICU
... organ blood fl ow, alterations in renal perfusion are considered key to the pathophysiology of ...renal blood fl ow [6] and only provide information about fl ow in main ...of blood fl ...
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Local effects of acute cellular injury on regional myocardial blood flow
... on blood flow were assessed by determining the relationship between regional blood flow and the extent of subsequent cellular necrosis measured in multiple tissue samples, weight 1-2 g, from ...
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Myocardial Blood Flow Distribution in Concentric Left Ventricular Hypertrophy
... Regional myocardial blood flow during both control conditions and ischemia-induced vasodilatation was studied in eight chronically instrumented awake ...
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Atlas based analysis of 4D flow CMR: Automated vessel segmentation and flow quantification
... Two-dimensional cine through-plane phase-contrast- CMR velocity data were acquired in a slice perpendicular to the main flow direction in the ascending aorta just downstream from the aortic valve, above the ...
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Effects of nitroglycerin on transmural myocardial blood flow in the unanesthetized dog
... of myocardial blood flow in the awake dog during normal conditions and in the presence of ischemia-induced coronary ...Regional myocardial blood flow was estimated by using ...
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The use of fluorescent microspheres to measure organ blood flows in low flow states
... digestion. Following digestion, the blood and tissue pieces were individually filtered through 10 pm pore polycarbonate filters (Poretics, Livermore, CA, USA) under negative pressure. The digestion vials and the ...
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Computational studies of the effects of myocardial blood flow reductions on cardiac metabolism
... reduced myocardial blood flow (parameter MBF) were performed by solving the model equations using an implicit integrator, LSODES ...of myocardial ischemia of various degrees and ...to ...
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