Pressure-Radius Relationship in Large Blood Vessels of Man

Pressure-radius relationship in large blood vessels of man.

• The measurement of instantaneous blood flow in the great vessels in man is of importance in the study of circulatory dynamics. With the pressure-gradient technique, it is possible to estimate instantaneous blood velocity in man. However, in order to compute instantaneous blood flow from blood velocity, the radius of the vessel under study must be known at every instant in the cardiac cycle. T...

Studying Changes of the Effective Radius in Blood Vessels after Exposure of Lower Extremities to Periodical Mechanical Vibrations

Background: Previous studies demonstrated a health improving effect in patients underwent an automatic vibratory massage taking 10 minutes. One of reasons that may explain a healing effect of the automatic massage is a stimulated increase in both blood circulation through vascular system and effective size of blood vessels. Objective: This paper aims to quantify a contribution of the auto...

Blood Vessels Blood Pressure and Vascular Calcification

The aim of this study was to determine the associations between the presence and extent of calcified atherosclerosis in multiple vascular beds and systolic blood pressure, diastolic blood pressure, pulse pressure, mean arterial pressure, isolated systolic hypertension, and hypertension. A total of 9510 patients (42.5% women) underwent electron beam computed tomography scanning as part of a rout...

Blood vessels of the ciliary ganglion in man.

Blood vessels of the bulbar conjunctiva in man.

LARGELY owing to technical difficulties the role of the capillary in human disease is not known. Chambers (1948) stated that an adequate survey of the capillary bed for study of the variations in its functional activity required tissue in which the vessels could be traced from the arteriolar to the venular ends, and at the same time be exposed for observation with a minimum of trauma so as not ...