Figure 4.

DIEP flap was raised and thermal imaging was used just before division of the pedicle to mark and discard the least perfused part of the flap. Note the least perfused area of the flap in thermal imaging was most of Zone IV and was marked on the skin (red line). In this case, ICG imaging was also used to assess the flap perfusion before division and the findings/markings (blue line) were noticeably corresponding to thermography findings.