Augmented Reality as a Tool to Guide PSI Placement in Pelvic Tumor Resections

Sensors

Rafael Moreta-Martinez¹  David García-Mato¹  Javier Pascau¹  Mónica García-Sevilla¹  Alicia Pose-Diez-de-la-Lastra¹  José Antonio Calvo-Haro²  Rubén Pérez-Mañanes² 

[1] Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, 28911 Leganés, Spain;Instituto de Investigación Sanitaria Gregorio Marañón, 28007 Madrid, Spain;

关键词: augmented reality;    patient-specific instruments;    pelvic tumor resection;    3D printing;   

DOI  :  10.3390/s21237824

来源: DOAJ

【 摘 要 】

Patient-specific instruments (PSIs) have become a valuable tool for osteotomy guidance in complex surgical scenarios such as pelvic tumor resection. They provide similar accuracy to surgical navigation systems but are generally more convenient and faster. However, their correct placement can become challenging in some anatomical regions, and it cannot be verified objectively during the intervention. Incorrect installations can result in high deviations from the planned osteotomy, increasing the risk of positive resection margins. In this work, we propose to use augmented reality (AR) to guide and verify PSIs placement. We designed an experiment to assess the accuracy provided by the system using a smartphone and the HoloLens 2 and compared the results with the conventional freehand method. The results showed significant differences, where AR guidance prevented high osteotomy deviations, reducing maximal deviation of 54.03 mm for freehand placements to less than 5 mm with AR guidance. The experiment was performed in two versions of a plastic three-dimensional (3D) printed phantom, one including a silicone layer to simulate tissue, providing more realism. We also studied how differences in shape and location of PSIs affect their accuracy, concluding that those with smaller sizes and a homogeneous target surface are more prone to errors. Our study presents promising results that prove AR’s potential to overcome the present limitations of PSIs conveniently and effectively.

【 授权许可】

Unknown