RT Journal Article SR Electronic T1 Single SPECT Measures of Cerebral Cortical Perfusion Reflect Time-Index Estimation of Dementia Severity in Alzheimer's Disease JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 57 OP 64 VO 41 IS 1 A1 J. Wesson Ashford A1 Wei-Jen Shih A1 John Coupal A1 Raj Shetty A1 Andrew Schneider A1 Cathie Cool A1 Ayten Aleem A1 Vickie H. Kiefer A1 Marta S. Mendiondo A1 Frederick A. Schmitt YR 2000 UL http://jnm.snmjournals.org/content/41/1/57.abstract AB