title: Question-driven technology assessment: SPECT as an example.
authors.affiliation: Department of Neurology, New England Medical Center, Boston, MA 02111.
authors.forename: L R
authors.initials: LR
authors.lastname: Caplan
mesh_terms: D002545:Brain Ischemia / Q000000981:diagnostic imaging; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging; D005069:Evaluation Studies as Topic; D006801:Humans; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging; D015899:Tomography, Emission-Computed, Single-Photon / Q000592:standards*