Xenon-enhanced computed tomography compared with [14C]iodoantipyrine for normal and low cerebral blood flow states in baboons.
Author(s) -
Sidney K. Wolfson,
Joni Clark,
Joel Greenberg,
D Gur,
Howard Yonas,
Richard P. Brenner,
E.E. Cook,
Patricia A. Lordeon
Publication year - 1990
Publication title -
stroke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.397
H-Index - 319
eISSN - 1524-4628
pISSN - 0039-2499
DOI - 10.1161/01.str.21.5.751
Subject(s) - cerebral blood flow , medicine , baboon , xenon , nuclear medicine , computed tomographic , blood flow , spearman's rank correlation coefficient , correlation , computed tomography , cardiology , radiology , physics , statistics , geometry , mathematics , atomic physics
The correlation between the acute, invasive diffusible [14C]iodoantipyrine technique for cerebral blood flow and the noninvasive xenon-enhanced computed tomographic method has been assessed by simultaneous measurements in the baboon. Blood flows in small tissue volumes (about 0.125 cm3) were directly compared in normal and low flow states. These studies demonstrate a statistically significant association between the two methods (p less than 0.001). Similar correlations were obtained by both the Kendall (tau) and the Spearman (r) methods (r = 0.67 to 0.92, n greater than or equal to 19 for each study). The problems and limitations of such correlations are discussed.
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