RT Journal Article SR Electronic T1 Angled-Collimator SPECT (A-SPECT): An Improved Approach to Cranial Single Photon Emission Tomography JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 805 OP 809 VO 25 IS 7 A1 Peter D. Esser A1 Philip O. Alderson A1 Robin J. Mitnick A1 Jeffrey J. Arliss YR 1984 UL http://jnm.snmjournals.org/content/25/7/805.abstract AB