Hyperspectral imaging for monitoring of free flaps of the oral cavity: A feasibility study

Felicio‐Briegel, Axelle ; Linek, Matthäus ; Sroka, Ronald; Rühm, Adrian; Freymüller, Christian ; Stocker, Magdalena; Baumeister, Philipp; Reichel, Christoph und Volgger, Veronika (2024): Hyperspectral imaging for monitoring of free flaps of the oral cavity: A feasibility study. In: Lasers in Surgery and Medicine, Bd. 56, Nr. 2: S. 165-174

Abstract

Objectives Hyperspectral imaging (HSI) provides spectral information about hemoglobin, water and oxygen supply and has thus great potential in perfusion monitoring. The aim of the present study was to investigate the feasibility of HSI in the postoperative monitoring of intraoral free flaps.

Methods The 14 patients receiving reconstructive head and neck surgery with a radial forearm free flap were included. HSI was performed intraoperatively (t0), on Day 1 (t1), 2 (t2), 3–6 (t3), 7–9 (t4), 10–11 (t5) and 12–15 (t6) postoperatively. Flap tissue perfusion was assessed on defined regions of interest by calculating the perfusion indices Tissue Hemoglobin Index (THI), hemoglobin oxygenation (StO2), Near Infrared Perfusion Index (NIR Perfusion Index) and Tissue Water Index (TWI).

Results Image quality varied depending on location of the flap and time of measurement. StO2 was >50 intraoperatively and >40 on t1 for all patients. A significant difference was found solely for TWI between t0 and t2 and t0 and t4. No flap loss occurred.

Conclusions The use of HSI in the monitoring of intraoral flaps is feasible and might become a valuable addition to the current clinical examination of free flaps.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin > Klinikum der LMU München > Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 0196-8092
• Sprache: Englisch