RT Journal Article SR Electronic T1 Transmission Computed Tomography Imaging of the Head with a SPECT System and a Collimated Line Source JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 328 OP 335 VO 36 IS 2 A1 Kemp, Brad J. A1 Prato, Frank S. A1 Nicholson, Richard L. A1 Reese, Lionel YR 1995 UL http://jnm.snmjournals.org/content/36/2/328.abstract AB