Augmented reality and dynamic infrared thermography for perforator mapping in the anterolateral thigh

Dynamic infrared thermography (DIRT) has been used for the preoperative mapping of cutaneous perforators. This technique has shown a positive correlation with intraoperative findings. Our aim was to evaluate the accuracy of perforator mapping with DIRT and augmented reality using a portable projector. For this purpose, three volunteers had both of their anterolateral thighs assessed for the presence and location of cutaneous perforators using DIRT. The obtained image of these “hotspots” was projected back onto the thigh and the presence of Doppler signals within a 10-cm diameter from the midpoint between the lateral patella and the anterior superior iliac spine was assessed using a handheld Doppler device. Hotspots were identified in all six anterolateral thighs and were successfully projected onto the skin. The median number of perforators identified within the area of interest was 5 (range, 3–8) and the median time needed to identify them was 3.5 minutes (range, 3.3–4.0 minutes). Every hotspot was correlated to a Doppler sound signal. In conclusion, augmented reality can be a reliable method for transferring the location of perforators identified by DIRT onto the thigh, facilitating its assessment and yielding a reliable map of potential perforators for flap raising.

Keywords

Thermography - Perforator flap - Surgery, computer-assisted

Part of this article was presented at the 17th International Course on Perforator Flaps on November 10−13, 2016 in Sydney, Australia.

Part of this article was presented at the 9th Congress of the World Society for Reconstructive Microsurgery on June 14−17, 2017 in Seoul, Korea.

Publication History

Received: 23 August 2017

Accepted: 13 February 2018

Article published online:
03 April 2022

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