Three-Dimensional Visualization for Extended Deep Inferior Epigastric Perforator Flaps.

[PURPOSE] The aim of the study was to provide an applied and digital anatomical basis of acquiring extended deep inferior epigastric perforator (DIEP) flaps for clinical use.

[METHODS] Five formalin-soaked specimens were received red latex injection and dissected by layers. The arteriography using the modified mixture of lead oxide-gelatin was performed on 10 adult cadavers that were serially scanned by a spiral computed tomography. The DIEPs were 3 dimensionally reconstructed by Mimics.

[RESULTS] The medial row perforators of DIEP arteries are located in the medial 1/third of rectus abdominis muscle, and lateral row perforators in the lateral 1/third of the muscle. The perforators distribute mainly from the upper tendinous intersection of umbilicus to below umbilicus within 8.0 cm, especially 4.0 cm. There are constant diameter 0.8-mm perforators or greater accompanied with nerveswithin this region. The main perforators are shown by fast direct volume rendering (VR) reconstruction method, and 3-dimensional images of DIEPs are acquired by dynamic reconstruction (DR) method. Consecutively, the adjacent perforators can be combined freely and the position and anastomosis of extended branches can be easily observed. The extended DIEP flaps were designed by VR and DR methods.

[CONCLUSIONS] The DIEPs can obtain large extended perforator flaps accompanied with nerves. The perforator close to the umbilicus should be selected while designing the DIEP flap. The 3-dimensional model of extended DIEP flaps can be established conveniently and intuitively by VR and DR methods of Mimics.