RT Journal Article SR Electronic T1 Optimal Scan Time of Oxygen-15-Labeled Water Injection Method for Measurement of Cerebral Blood Flow JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1931 OP 1934 VO 32 IS 10 A1 Iwao Kanno A1 Hidehiro Iida A1 Shuichi Miura A1 Matsutaro Murakami YR 1991 UL http://jnm.snmjournals.org/content/32/10/1931.abstract AB