Results 181 to 190 of about 50,212 (227)

Comparison of dye dilution method to radionuclide techniques for cardiac output determination in dogs

Journal of Pharmaceutical Sciences, 1980
A study was undertaken to identify the most accurate 99mTc-labeled radiopharmaceutical and to determine the accuracy of a noninvasive radionuclide technique (antecubital injection and precordial detection) for cardiac output determinations. Phase I employed sodium pertechnetate, stannous pyrophosphate with sodium pertechnetate, technetium-99m red blood
S S, Eng, J R, Robayo, W, Porter, R E, Smith   +3 more
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Some Problems in the Estimation of the End-diastolic Volume of the Ventricle by Dye Dilution Techniques

Cardiovascular Research, 1968
Model experiments have been carried out to determine possible sources of error in the use of indicator dilution methods to determine ventricular volumes. It has been shown that volumes are significantly over-estimated when sampling is made in the aorta using the “wash-out” or constant infusion methods. The presence of valvular regurgitation invalidates
M, Petrle, P, Avasthey
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Compensatory Hyperplasia of the Human Kidney Evaluated by Angiography and a Dye Dilution Technique

Acta Radiologica. Diagnosis, 1980
The renal blood flow and related variables were assessed with a dye dilution technique in conjunction with angiography of the enlarged kidney in 13 patients with unilateral disease, hypoplasia or aplasia of one kidney. The total renal blood flow, the width of the arteries, the kidney area, the vascular volume and the thickness of the cortex were all ...
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Effect of Angiotensin on Normal Renal Circulation Determined by Angiography and a Dye Dilution Technique

Acta Radiologica. Diagnosis, 1977
Angiotensin in a dose of 0.5 to 1.0 microgran injected into the renal artery of healthy kidneys initially decreased renal blood flow and increased the appearance time and mean transit time of dye and contrast medium as examined by a dye dilution technique and angiography. The initial phase is followed by a reactive hyperemia.
L, Ekelund, J, Göthlin
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Theory of measurement of blood flow by dye dilution technique

IRE Transactions on Medical Electronics, 1958
The general mathematical theory of measurement of blood flow by dye dilution techniques is discussed. The mathematical procedure for handling the recirculation problem is described, and it is shown that, in general, sampling of concentration at a single point is not sufficient to uniquely determine both the volume and flow in a vascular bed.
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Spontaneous Portorenal Shunting in Portal Hypertension Assessed by a Dye Dilution Technique

Acta Radiologica. Diagnosis, 1976
Using a dye dilution technique, blood flow was measured in the right and left renal veins in 12 patients with portal hypertension. There was evidence of spontaneous shunts to the left renal vein in all cases and at least in 4 cases to the right one.
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CARDIAC OUTPUT BY THE DYE DILUTION TECHNIQUE UNDER THIOPENTAL SODIUM-OXYGEN AND EHTER ANESTHESIA

Survey of Anesthesiology, 1956
One hundred-twenty determinations of cardiac output by the dye dilution technic utilizing the cuvette oximeter were made on 20 dogs. Of these, 60 were done under thiopental sodium-oxygen analgesia and 60 were done after supplementing with ether. Arterial blood pressure was recorded by strain gauge.
D W, ELLIS, E M, GREISHEIMER, L, MAKARENKO, N, OLEKSYSHYN, G, STEWART, K T, THOMPSON   +5 more
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Measurement of Flow Components on Upland Areas Using Dye Dilution Techniques

Transactions of the ASAE, 1988
ABSTRACT DYE dilution techniques can be used to measure rill, interrill, and interrill-to-rill flow rates on upland areas. Procedures and equations for making flow measurements are described along with equations for estimating interrill length and width.
Finkner, S. C., Gilley, John E.
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Cardiovascular physiology in normal pregnancy: Studies with the dye dilution technique

American Journal of Obstetrics and Gynecology, 1954
Abstract 1. 1. A new method for the determination of cardiac output and plasma volume in man based upon the Hamilton dilution principle has been presented. The method is simple, accurate, requires very little equipment, and can be applied clinically. Repeated determinations can be made on the same patient with no discomfort to the patient.
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Computer measurement of cardiac output by dye dilution: comparison of computer, Fick, and Dow techniques

Cardiovascular Research, 1972
Seventy-five indocyanine green dye curves were done in 27 patients, with Fick cardiac output determinations being carried out just before the dye curves. A digital computer was programmed to calculate dye cardiac output by the method of Hamilton, using four different segments of the washout portion of the curves to approximate an exponential and ...
R, Stenson, L, Crouse, D C, Harrison
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