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Point cloud registration for measuring shape dependence of soft tissue deformation by digital twins in head and neck surgery

Introduction: A 2½ D point cloud registration method was developed to generate digital twins of different tissue shapes and resection cavities by applying a machine learning (ML) approach. This demonstrates the feasibility of quantifying soft tissue shifts. Methods: An ML model was trained using sim...

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Hauptverfasser: Monji Azad, Sara (VerfasserIn) , Männle, David (VerfasserIn) , Hesser, Jürgen (VerfasserIn) , Pohlmann, Jan (VerfasserIn) , Rotter, Nicole (VerfasserIn) , Affolter, Annette (VerfasserIn) , Weis, Cleo-Aron Thias (VerfasserIn) , Ludwig, Sonja (VerfasserIn) , Scherl, Claudia (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: January-December 2024
In: Biomedicine hub
Year: 2024, Jahrgang: 9, Heft: 1, Pages: 9-15
ISSN:2296-6870
DOI:10.1159/000535421
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1159/000535421
Volltext
Verfasserangaben:Sara Monji-Azad, David Männle, Jürgen Hesser, Jan Pohlmann, Nicole Rotter, Annette Affolter, Cleo Aron Weis, Sonja Ludwig, Claudia Scherl
Beschreibung
Zusammenfassung:Introduction: A 2½ D point cloud registration method was developed to generate digital twins of different tissue shapes and resection cavities by applying a machine learning (ML) approach. This demonstrates the feasibility of quantifying soft tissue shifts. Methods: An ML model was trained using simulated surface scan data obtained from tumor resections in a pig head cadaver model. It hereby uses 438 2½ D scans of the tissue surface. Tissue shift was induced by a temperature change from 7.91 ± 4.1°C to 36.37 ± 1.28°C. Results: Digital twins were generated from various branched and compact resection cavities (RCs) and cut tissues (CT). A temperature increase induced a tissue shift with a significant volume increase of 6 mL and 2 mL in branched and compact RCs, respectively (p = 0.0443; 0.0157). The volumes of branched and compact CT were decreased by 3 and 4 mL (p < 0.001). In the warm state, RC and CT no longer fit together because of the significant tissue deformation. Although not significant, the compact RC showed a greater tissue deformation of 1 μL than the branched RC with 0.5 μL induced by the temperature change (p = 0.7874). The branched and compact CT forms responded almost equally to changes in temperature (p = 0.1461). Conclusions: The simulation experiment of induced soft tissue deformation using digital twins based on 2½ D point cloud models proved that our method helps to quantify shape-dependent tissue shifts.
Beschreibung:Online veröffentlicht: 9. Januar 2024
Gesehen am 10.04.2025
Beschreibung:Online Resource
ISSN:2296-6870
DOI:10.1159/000535421

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