RT Journal Article SR Electronic T1 An Interactive Technique for Three-Dimensional Image Registration: Validation for PET, SPECT, MRI and CT Brain Studies JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 2011 OP 2018 VO 35 IS 12 A1 Pietrzyk, Uwe A1 Herholz, Karl A1 Fink, Gereon A1 Jacobs, Andreas A1 Mielke, Rüdiger A1 Slansky, Ina A1 Würker, Michael A1 Heiss, Wolf-Dieter YR 1994 UL http://jnm.snmjournals.org/content/35/12/2011.abstract AB