RT Journal Article SR Electronic T1 Blood Flow Heterogeneity Versus Cerebral Hypoperfusion Revealed by Fractal Analysis on 99mTc-HMPAO SPECT JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1874 OP 1874 VO 44 IS 11 A1 Hsiao-Wen Chung YR 2003 UL http://jnm.snmjournals.org/content/44/11/1874.abstract AB