title: Statistical Analysis of Interactive Surgical Planning Using Shape Descriptors in Mandibular Reconstruction with Fibular Segments.
abstract: This study was performed to quantitatively analyze medical knowledge of, and experience with, decision-making in preoperative virtual planning of mandibular reconstruction. Three shape descriptors were designed to evaluate local differences between reconstructed mandibles and patients' original mandibles. We targeted an asymmetrical, wide range of cutting areas including the mandibular sidepiece, and defined a unique three-dimensional coordinate system for each mandibular image. The generalized algorithms for computing the shape descriptors were integrated into interactive planning software, where the user can refine the preoperative plan using the spatial map of the local shape distance as a visual guide. A retrospective study was conducted with two oral surgeons and two dental technicians using the developed software. The obtained 120 reconstruction plans show that the participants preferred a moderate shape distance rather than optimization to the smallest. We observed that a visually plausible shape could be obtained when considering specific anatomical features (e.g., mental foramen. mandibular midline). The proposed descriptors can be used to multilaterally evaluate reconstruction plans and systematically learn surgical procedures.
authors: Graduate School of Informatics, Kyoto University, Kyoto, Japan.
authors: Megumi
authors: http://orcid.org/0000-0002-5508-4366
authors: M
authors: Nakao
authors: Graduate School of Informatics, Kyoto University, Kyoto, Japan.
authors: Shimpei
authors: S
authors: Aso
authors: Department of Oral and Maxillofacial Surgery, Rakuwakai Otowa Hospital, Kyoto, Japan.
authors: Yuichiro
authors: Y
authors: Imai
authors: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors: Nobuhiro
authors: N
authors: Ueda
authors: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors: Toshihide
authors: T
authors: Hatanaka
authors: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors: Mao
authors: M
authors: Shiba
authors: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors: Tadaaki
authors: T
authors: Kirita
authors: Graduate School of Informatics, Kyoto University, Kyoto, Japan.
authors: Tetsuya
authors: T
authors: Matsuda
mesh_terms: D000465:Algorithms; D006801:Humans; D063175:Mandibular Reconstruction / Q000379:methods*; D008953:Models, Anatomic; D010347:Patient Care Planning; D012984:Software; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014584:User-Computer Interface