Title :
Non-invasive arterial monitor for H2/sup 15/O blood flow studies
Author :
Nelson, A. Dennis ; Miraldi, Floro ; Leisure, Gregory P. ; Muzic, Raymond F., Jr.
Author_Institution :
Div. of Nucl. Radiol., Univ. Hospitals of Cleveland, OH, USA
Abstract :
A noninvasive arterial radioactivity monitor has been developed that measures the flux of photons emanating from the superior lobe of the right lung following an intravenous bolus of H/sub 2//sup 15/O. To determine the efficacy of the lung probe as a measure of arterial radioactivity, 16 brain blood flow determinations were made in four volunteers using arterial radioactivity measurements based both on the lung probe and continuous sampling in a radial artery. The mean absolute percent difference in water flows calculated for the invasive versus the noninvasive monitor was 5.45% and the maximum percent difference was 11.3%.<>
Keywords :
brain; flow measurement; haemodynamics; patient monitoring; radioisotope scanning and imaging; H/sub 2//sup 15/O; brain blood flow determinations; intravenous bolus; noninvasive arterial radioactivity monitor; nuclear medicine; photon flux measurement; probe efficacy; radial artery; right lung superior lobe; volunteers; water flows; Arteries; Blood flow; Cameras; Extraterrestrial measurements; Fluid flow measurement; Head; Lungs; Monitoring; Probes; Sampling methods;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259209
