RT Journal Article SR Electronic T1 Imaging PD-L1 Expression in Melanoma Brain Metastases JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 897 OP 898 DO 10.2967/jnumed.121.263209 VO 63 IS 6 A1 Nimmagadda, Sridhar YR 2022 UL http://jnm.snmjournals.org/content/63/6/897.abstract AB