Use of hyperspectral imaging in tumor surgery of the head and neck

Introduction Hyperspectral imaging (HSI) is a non-contact and non-invasive technology that combines imaging, spectroscopy and tissue oximetry. In addition to RGB (red-green-blue) images, the parameters oxygen saturation (StO2), tissue perfusion (NIR), tissue hemoglobin index (THI) and tissue water index (TWI) as well as spectral data in the specified wavelength range are recorded. The aim was to evaluate the use of intraoperative HSI in tumor surgery of the head and neck.

Methods In a pilot study, hyperspectral imaging was used during tumor surgery and reconstructive surgery with free and pedicled flaps for head and neck cancer. The das TIVITATM Tissue T2 camera system (Diaspective Vision GmbH) with a spectral bandwidth between 500-1000 nm, a spectral resolution of 5 nm and a spatial resolution of 640 × 480 pixels was used for the acquisition of the HSI data.

Results Intraoperative HSI was possible in all patients and did not prolong the regular surgical procedure due to its quick applicability. First results show that HSI helps to identify critical anatomical structures and distinguish tumors from healthy tissue. In addition, it can be used to monitor free and pedicled flap circulation.

Conclusion HSI is suitable for contactless, non-invasive and intraoperative evaluation of tissue parameters in head and neck surgery. The main areas of application are tissue recognition (tumor detection and recognition of anatomical structures) and perfusion assessment.

Publication History

Article published online:
12 May 2023