Preoperative planning of DIEP and SGAP flaps: Preliminary experience with magnetic resonance angiography using 3-tesla equipment and blood-pool contrast medium

BACKGROUND
Autologous breast reconstruction techniques can be used to create a breast, in particular the superior gluteal artery perforator (SGAP) and deep inferior epigastric artery perforator (DIEP) flaps. Preoperative imaging is an essential planning tool in mapping the location and size of perforator vessels. The aim of this report is to show the usefulness of angio-MR technique for preoperative planning of DIEP and SGAP flaps. Initial experience, surgical findings correlation and imaging findings will be described.

METHODS
From February 2007 to September 2007, ten consecutive women considered for breast reconstruction with DIEP (eight patients) and SGAP flaps (two patients) after previous mastectomy for breast cancer were studied. After written informed consent was obtained, a preoperative angio-MR using 3-Tesla equipment and blood-pool contrast medium was performed to localize and evaluate the main perforator vessels in each patient and procedure.

RESULTS
Angio-MR showed all the main perforator vessels later observed during the surgical procedure with a very good location concordance, but missed one main perforator vessels in each of two patients. In all patients undergoing SGAP flaps, an accurate identification of the main perforator vessels was achieved. Angio-MR clearly showed the intramuscular course of the perforator vessels for DIEP and SGAP flaps. Exact correlation between angio-MR and surgical findings was observed.

CONCLUSIONS
The use of angio-MR for preoperative perforator flaps evaluation yielded promising results and would allow not only to locate perforator vessels but also to globally assess presurgical planning of perforator flaps in a noninvasive, radiation and toxicity-free way.

CITA DEL ARTÍCULO J Plast Reconstr Aesthet Surg. 2010 Feb;63(2):298-304