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European Radiology Experimental
Fig. 2 | European Radiology Experimental

Fig. 2

From: The MRI characteristics of the no-flow region are similar in reperfused and non-reperfused myocardial infarcts: an MRI and histopathology study in swine

Fig. 2

Myocardial infarct (MI) and no-flow region (NF) segmentation. Short-axis inversion recovery (IR) early gadolinium enhancement (EGE) (a-d) and late gadolinium enhancement (LGE) (e-h) images obtained from an animal that underwent induction of non-reperfused MI. The presence of the central NF surrounded by the rim of the MI is apparent in the raw images (a, e). After the endocardial (red) and epicardial (green) contours were traced (b, f), the enhanced area was determined by the thresholding method using remote mean + 5 SD as the cutoff (c, g). To measure the NF, the central non-enhanced area was traced using a dedicated contour (d, h). The total MI size was calculated as the sum of the enhanced and the NF areas. The NF size was measured on the EGE image (d) and the total MI size was assessed in the corresponding LGE image (h)

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