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[Brain uptake ratio as an index of cerebral blood flow obtained with 99mTc-ECD]
Y Miyazaki1, S Kinuya, M Hashimoto
1Section of Nuclear Medicine, Noto General Hospital.
Kaku Igaku. the Japanese Journal of Nuclear Medicine
|January 1, 1997
Abstract:
A new index of cerebral blood flow (brain uptake ratio, BUR) using 99mTc-ECD was developed and evaluated in 66 patients (132 cerebral hemispheres). BUR was calculated from brain count in anterior planar image (60-80 sec after injection of 99mTc-ECD) divided by the summation of the count of aortic arch during first transit of radionuclide. BUR correlated well with brain perfusion index (BPI) obtained with Patlak plot method (r = 0.960, p < 0.001). In conclusion, BUR is useful as a simple and non-invasive index reflecting cerebral blood flow.