Measurement and Analysis of Lobar Lung Deformation After a Change of Patient Position During Video-Assisted Thoracoscopic Surgery - Archive ouverte HAL
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Measurement and Analysis of Lobar Lung Deformation After a Change of Patient Position During Video-Assisted Thoracoscopic Surgery

Pablo Alvarez 1 Matthieu Chabanas 1 Stéphane Sikora 2 Simon Rouzé 3, 4 Yohan Payan 5 Jean-Louis Dillenseger 3 
1 TIMC-GMCAO - Gestes Medico-chirurgicaux Assistés par Ordinateur
TIMC - Translational Innovation in Medicine and Complexity / Recherche Translationnelle et Innovation en Médecine et Complexité - UMR 5525
5 TIMC-BIOMÉCA - Biomécanique des Tissus Vivants et des Matériaux – Modélisation et Caractérisation
TIMC - Translational Innovation in Medicine and Complexity / Recherche Translationnelle et Innovation en Médecine et Complexité - UMR 5525
Abstract : Video-assisted thoracoscopic surgery (VATS) is a minimally invasive surgical technique for the diagnosis and treatment of earlystage lung cancer. During VATS, large lung deformation occurs as a result of a change of patient position and a pneumothorax (lung deflation), which hinders the intraoperative localization of pulmonary nodules. Modeling lung deformation during VATS for surgical navigation is desirable, but the mechanisms causing such deformation are yet not well-understood. In this study, we estimate, quantify and analyze the lung deformation occurring after a change of patient position during VATS. We used deformable image registration to estimate the lung deformation between a preoperative CT (in supine position) and an intraoperative CBCT (in lateral decubitus position) of six VATS clinical cases. We accounted for sliding motion between lobes and against the thoracic wall and obtained consistently low average target registration errors (under 1 mm). We observed large lung displacement (up to 40 mm); considerable sliding motion between lobes and against the thoracic wall (up to 30 mm); and localized volume changes indicating deformation. These findings demonstrate the complexity of the change of patient position phenomenon, which should necessarily be taken into account to model lung deformation for intraoperative guidance during VATS.
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https://hal.archives-ouvertes.fr/hal-03807037
Contributeur : Jean-Louis Dillenseger Connectez-vous pour contacter le contributeur
Soumis le : samedi 8 octobre 2022 - 21:19:23
Dernière modification le : mardi 18 octobre 2022 - 04:31:32

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Pablo Alvarez, Matthieu Chabanas, Stéphane Sikora, Simon Rouzé, Yohan Payan, et al.. Measurement and Analysis of Lobar Lung Deformation After a Change of Patient Position During Video-Assisted Thoracoscopic Surgery. IEEE Transactions on Biomedical Engineering, 2022, pp.1-9. ⟨10.1109/tbme.2022.3205458⟩. ⟨hal-03807037⟩

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