Figure 3From: Tracking of stem cells in vivo for cardiovascular applicationsLong-axis CMR showing hypointense lesions (arrows) caused by superparamagnetic iron oxide-labeled mesenchymal stem cells acquired within (top left) 24Â h and (bottom left) 1Â week of injection. Insets demonstrate expansion of lesion over 1Â week. Reprinted with permission from Kraitchman et al.[115].Back to article page