RT Journal Article SR Electronic T1 In Vivo Tracking Techniques for Cellular Regeneration, Replacement, and Redirection JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1825 OP 1828 DO 10.2967/jnumed.112.106146 VO 53 IS 12 A1 Aarntzen, Erik H.J.G. A1 Srinivas, Mangala A1 Walczak, Piotr A1 Janowski, Miroslaw A1 Heerschap, Arend A1 de Vries, I. Jolanda M. A1 Figdor, Carl G. A1 Bulte, Jeff W.M. A1 Oyen, Wim J.G. YR 2012 UL http://jnm.snmjournals.org/content/53/12/1825.abstract AB Cellular therapy can be defined as the transplantation of living cells for the treatment of medical conditions. Three main objectives of cellular therapy are regeneration of damaged tissue, replacement of function by secretion of biologically active molecules, and redirection of aberrant processes. Given the complex nature of these approaches, in vivo tracking of the transplanted cells is critical to evaluate their potential benefit and to optimize treatment strategies. Recent advances are reviewed that enable in vivo cell tracking as an important adjunct to implement cellular therapy in clinical practice.