RT Journal Article SR Electronic T1 Radiological Assessment: Sources and Exposures JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 869 OP 869 VO 34 IS 5 A1 Castronovo, Frank P. YR 1993 UL http://jnm.snmjournals.org/content/34/5/869.1.abstract AB