Results 241 to 250 of about 5,458,082 (292)

Myocardial Blood Flow and Fibrosis in Hypertrophic Cardiomyopathy

Journal of Cardiac Failure, 2011
We investigated the relationship between myocardial blood flow (MBF), fibrosis, risk factors for sudden death, and clinical manifestations in hypertrophic cardiomyopathy (HCM).Sixty-two patients with HCM (45 men, overall mean age 47 ± 16 years), 15 acromegalic patients with left ventricular hypertrophy (9 man, overall mean age 47 ± 12 years), and 20 ...
Andrea Barison, Giancarlo Todiere, Alessandro Pingitore   +2 more
exaly   +4 more sources

Microheterogeneity of myocardial blood flow

Basic Research in Cardiology, 2001
Myocardial blood flow exhibits the most marked heterogeneity at the microvascular level. Its within-layer spatial distribution can be described from subepi- to subendocardium with resolutions of 0.1 x 0.1 to 1 x 1 mm2 by quantitative digital radiography based on the technique of desmethylimipramine deposition.
T, Matsumoto, F, Kajiya
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The Effect of Valium on Myocardial Blood Flow

Radiology, 1976
The effect of Valium on coronary blood flow was studied. In 18 patients undergoing coronary angiography, total and regional myocardial blood flow was determined by the 133Xe wash-out technique. A total of 39 pre- and 39 post-Valium injection wash-out curves were constructed. Results indicate (99% confidence) that intravenous Valium injection (0.1 mg/kg
A, Fromanek, D, Korbuly, R, Moore, L, Knight, S, Kim, K, Amplatz   +5 more
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Heterogeneity of myocardial blood flow

Basic Research in Cardiology, 1995
Myocardial blood flow is heterogeneous, whether considered by chamber, by layers of the ventricular walls, or by microregions within layers. There is also variability of myocardial flow reserve, particularly in layers and microregions, even when the heart is arrested.
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Myocardial Blood Flow Distribution

Scandinavian Journal of Clinical and Laboratory Investigation, 1976
(1976). Myocardial Blood Flow Distribution. Scandinavian Journal of Clinical and Laboratory Investigation: Vol. 36, No. 1, pp. 1-6.
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Regulation of Transmural Myocardial Blood Flow

Journal of Biomechanical Engineering, 1985
A major problem in understanding how myocardial blood flow is regulated is the common occurrence of subendocardial ischemia in many diseases, with or without coronary arterial disease. Two commonly held explanatory hypotheses were that high systolic intramyocardial pressures prevented flow to deep but not superficial muscle, or that in diastole tissue ...
J I, Hoffman, R W, Baer, F L, Hanley, L M, Messina   +3 more
openaire   +2 more sources

Laser Measurement of Myocardial Blood Flow

Journal of Clinical Laser Medicine & Surgery, 1991
A He-Ne laser flowmeter (wavelength: 632.8 nm, power: 2 mW) has already been used to measure blood flow in skin, muscle, and mucosa. However, the application of this flowmeter for the beating heart has been left undeveloped due to its difficulty. For the purpose of establishment of the laser measurement of myocardial blood flow, we redesigned a ...
T, Mizutani, M, Takao, K, Onoda, Y, Katayama, I, Yada, H, Yuasa, M, Kusagawa   +6 more
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Myocardial Blood Flow in the Diving Seal

Acta Physiologica Scandinavica, 1976
AbstractGrey seals exhibit a marked drop in heart rate, a slight decrease in ventricular contractility, and an essentially unchanged stroke volume upon diving. In the present study, we have demonstrated that the resulting drop in cardiac output is associated with a 90% reduction of coronary blood flow.
A S, Blix, J K, Kjekshus, I, Enge, A, Bergan   +3 more
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Absolute quantification of myocardial blood flow

Journal of Nuclear Cardiology, 2018
With the increasing availability of positron emission tomography (PET) myocardial perfusion imaging, the absolute quantification of myocardial blood flow (MBF) has become popular in clinical settings. Quantitative MBF provides an important additional diagnostic or prognostic information over conventional visual assessment.
Keiichiro, Yoshinaga, Osamu, Manabe, Nagara, Tamaki   +2 more
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Noncoronary Collateral Myocardial Blood Flow

The Annals of Thoracic Surgery, 1975
This study shows that noncoronary collateral flow occurs in normal hearts after chronic coronary occlusion and with left ventricular hypertrophy in variable amounts (0.2 to 16 ml/100 gm/min). Luminal--left ventricular flow is greatest when the heart is arrested by aortic cross-clamping, falls significantly when perfusion pressure is lowered to 50 mm Hg,
J, Brazier, C, Hottenrott, G, Buckberg
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