“…As a multimodal platform, a mixed-reality-based head and neck tumour board (MR-HNTB) could support interdisciplinary oncological treatment planning by providing relevant clinical, radiological and histopathological data on a single interface [10]. The unique selling point of MR technology is its immersive character, i.e., immersion in an expandable world, direct interaction with a three-dimensional (3D) object and immediate visual feedback [7,[11][12][13]. This extended perspective enables, for example, topographical observations [14][15][16][17].…”