Co-registration of radiotherapy planning and recurrence scans with different imaging modalities in head and neck cancer

• DOI: 10.1016/j.phro.2022.06.012
• Publication Date: 2022-06-30T17:19:29Z
• Authors: Morten Horsholt K...; Christian Rønn Ha...; Ruta Zukauskaite; Jørgen Johansen; Eva Samsøe; Christian Maare; Anne Ivalu Sander...; Jesper Grau Eriksen
• Keywords: Image registration; Similarity (geometry)

MRI (magnetic resonance imaging) scans are frequently used in follow-up after radiotherapy for head and neck cancer. With the overall aim of enabling MRI-based pattern failure analysis, this study evaluated accuracy recurrence (rMRI) deformable co-registration with planning CT (computed tomography)-scans (pCT). Uncertainty anatomical changes between pCT rMRI was assessed by similarity metric analyses co-registered image structures from 19 patients. Average mean distance to agreement Dice coefficient performed adequately. Our findings provide proof concept reliable months years apart analysis.