Results 31 to 40 of about 5,458,082 (292)
Flow regulation in coronary vascular tree: a model study.
PLoS ONE, 2015 BackgroundCoronary blood flow can always be matched to the metabolic demand of the myocardium due to the regulation of vasoactive segments. Myocardial compressive forces play an important role in determining coronary blood flow but its impact on flow ...
Xinzhou Xie, Yuanyuan Wang
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Journal of Cardiovascular Magnetic Resonance, 2017 Background Quantification of myocardial blood flow requires knowledge of the amount of contrast agent in the myocardial tissue and the arterial input function (AIF) driving the delivery of this contrast agent. Accurate quantification is challenged by the
Peter Kellman +6 more
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Endocrinology, Diabetes & Metabolism, 2021 Aims This study examined the effect of experimentally‐induced hypoglycaemia on measures of myocardial blood flow and myocardial injury in adults with, and without, type 1 diabetes. Methods In a prospective, randomised, open‐label, blinded, endpoint cross‐
Radzi M. Noh +8 more
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Distribution of Myocardial Blood Flow in the Rat [PDF]
Circulation Research, 1959 Rubidium S6 distribution was used to estimate the distribution of myocardial blood flow in albino rats. The results indicate that the perfusion rates of the left ventricle, apex and interventricular septum are all substantially identical, averaging 2.6 to 2.9 ml./Gm. of tissue/min.
E J, HERSHGOLD +2 more
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PLoS ONE, 2020 Cardiac perfusion PET is increasingly used to assess ischemia and cardiovascular risk and can also provide quantitative myocardial blood flow (MBF) and flow reserve (MBFR) values. These have been shown to be prognostic biomarkers of adverse outcomes, yet
Marie A Guerraty +7 more
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A comprehensive mathematical model for cardiac perfusion
Scientific Reports, 2023 The aim of this paper is to introduce a new mathematical model that simulates myocardial blood perfusion that accounts for multiscale and multiphysics features. Our model incorporates cardiac electrophysiology, active and passive mechanics, hemodynamics,
Alberto Zingaro +4 more
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Effect of epicardiectomy on myocardial blood flow
The Journal of Thoracic and Cardiovascular Surgery, 1966 Summary Ventricular epicardiectomy was evaluated by measuring nutrient myocardial blood flow with a tracer of potassium. An acute increase in total myocardial blood flow was found immediately after epicardiectomy, but there was no acute increase in the myocardial flow from the ventricular chamber.
R D, King, S H, Steiner, I L, Heimburger
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Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2017 Background Treatments for patients with myocardial ischemia in the absence of angiographic obstructive coronary artery disease are limited. In these patients, particularly those with diabetes mellitus, diffuse coronary atherosclerosis and microvascular ...
Nishant R. Shah +16 more
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Frontiers in Cell and Developmental Biology, 2021 Ischemia/reperfusion (I/R) injury refers to the functional and structural changes in the process of blood flow recovery after ischemia. In addition to ischemia, the blood flow recovery can also lead to very harmful damage, such as the obvious cell ...
Shuangyu Lv +4 more
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Measurement of heterogeneous myocardial blood flow
Clinical Cardiology, 1980 AbstractInert gas measurements of myocardial blood flow have been compared to simultaneous radioactive microsphere flow measurements. Average flow per unit weight agreed within 20% in 20 of 24 comparisons. With the inert gas technique flows up to 580 ml/min/100 g could be measured.
P, Schanzenbächer, F J, Klocke
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