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HOPKINS RESEARCHERS DEVELOP NEW WAY TO TRACK MIGRATION OF STEM CELLS USED TO TREAT DAMAGED HEARTS
Distribution of IV-injected 111In oxine-labeled MSCs in a dog myocardial infarct (MI) model. Fused SPECT/CT images show an initial distribution/trapping of cells in the lung at day 1 (left), with a redistribution to liver, spleen, and the MI as early as day 2 (middle). Cells persist in the MI area for at least through day 5 (right).
|Combined SPECT/CT images on days 1 (A), 2 (B), and 7 (C) in a dog that demonstrated focal uptake in the anterior midventricular region of the heart. D to F, At the last imaging time point (days 5 to 8), a region of MSC uptake (arrow) is shown in 3 representative animals.|
Combined SPECT/CT and MR images of the heart demonstrating focal uptake of 111In oxine-labeled MSCs in the peri-infarcted region. A, CT image (gold) combined with MRI (gray scale) and SPECT (red) shows focal uptake in the myocardial infarct (MI) area. B, Focal uptake on SPECT (red) in another animal demonstrating localization of the MSCs to the MI in the two views (B,C).