Figure 3
From: Tracking of stem cells in vivo for cardiovascular applications

Long-axis CMR showing hypointense lesions (arrows) caused by superparamagnetic iron oxide-labeled mesenchymal stem cells acquired within (top left) 24 h and (bottom left) 1 week of injection. Insets demonstrate expansion of lesion over 1 week. Reprinted with permission from Kraitchman et al.[115].