RT Journal Article SR Electronic T1 A Collimator For Scanning With Low-Energy Photons JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 653 OP 656 VO 5 IS 9 A1 Harris, C. C. A1 Jordan, J. C. A1 Satterfield, M. M. A1 Goodrich, Jack K. A1 Stone, H. L. A1 Hill, Rebecca YR 1964 UL http://jnm.snmjournals.org/content/5/9/653.abstract AB