IEEE J Biomed Health Inform - Volumetric fibular transfer planning with shape-based indicators in mandibular reconstruction.

Tópicos

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Resumo

In preoperative planning for mandibular reconstructive surgery, it is necessary to determine the osteotomy lines for fibular shaping and the proper placement of fibular segments in the mandible. Although virtual surgical planning has been utilized in preoperative decision making, current software designs require manual operation and a trial-and-error process to refine the reconstruction plan. We have developed volumetric fibular transfer simulation software that can quickly design a preoperative plan based on direct volume manipulation and quantitative comparison with the patient's original mandible. We propose three quantitative shape indicators-volume ratio, contour error, and maximum projection-for symmetrical lesions of the mandible, and have implemented a parallel computation algorithm for the semiautomatic placement of fibular segments. Using this virtual planning software, we conducted a retrospective study of the computed tomography data from nine patients. We found that combining direct volume manipulation with real-time local search of placement improved the applicability of the planning system to optimize mandibular reconstruction.

Resumo Limpo

preoper plan mandibular reconstruct surgeri necessari determin osteotomi line fibular shape proper placement fibular segment mandibl although virtual surgic plan util preoper decis make current softwar design requir manual oper trialanderror process refin reconstruct plan develop volumetr fibular transfer simul softwar can quick design preoper plan base direct volum manipul quantit comparison patient origin mandibl propos three quantit shape indicatorsvolum ratio contour error maximum projectionfor symmetr lesion mandibl implement parallel comput algorithm semiautomat placement fibular segment use virtual plan softwar conduct retrospect studi comput tomographi data nine patient found combin direct volum manipul realtim local search placement improv applic plan system optim mandibular reconstruct

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