arXiv:2605.01084cs.CV2026-05被引 1

用AI优化下颌重建手术方案,提升骨愈合率。

Patient-Specific Optimization for Mandibular Reconstruction Planning with Enhanced Bone Union

论文配图:Patient-Specific Optimization for Mandibular Reconstruction Planning with Enhanced Bone Union
图 1 · 摘自论文原文
  • 基于CT构建患者特异性数字孪生,通过贝叶斯优化确定最佳截骨面和供区位置。
  • 通用缺陷模型中骨对接率提升29个百分点,患者案例中提升26个百分点。
  • 开源工具支持临床决策,适合颌面外科与医学影像研究者使用。

血管化骨移植重建下颌骨常因供受体不愈合而复杂化,现有虚拟手术规划仅提供几何方案,未明确促进骨愈合。本文提出OsteoOpt++,一种从影像到决策的个性化重建规划流程:通过模板-患者配准及CT衍生的肌肉与颞下颌关节参数更新,构建患者特异性数字孪生;再以接合驱动为目标、安全系数正则化,利用期望改进+采集规则的贝叶斯优化,搜索六个临床可控的截骨面与供区定位变量。在三种通用缺损(体部、颏部、角部-体部)及共4例患者特定病例上评估,其中3例用于优化,1例用于验证。通用案例中,相比常规术式,平均骨对接率提升最高达29个百分点(相对提升329%);患者案例中,相较术后第5天实际配置,提升最高达26个百分点。对十一项建模参数进行10%敏感性分析,通用与患者案例的目标函数变化分别不超过3%与4%;纵向病例显示预测接合与术后一年骨形成之间的Dice重叠分别为0.70与0.76。该方法为术前提供基于影像的截骨方向与供区放置推荐,预测可优于当前术中实施配置的愈合条件。优化与患者建模代码已开源于https://github.com/hamidreza-aftabi/OsteoOpt。

原文摘要 · Abstract (English)

Mandibular reconstruction with vascularized bone grafts is complicated by donor-host nonunion, and current virtual surgical planning produces a geometric plan rather than a configuration that explicitly promotes bone union. We present OsteoOpt++, an image-to-decision planning loop for patient-specific mandibular reconstruction. A pre-operative computed tomography (CT) is converted into a personalized digital twin through template-to-patient registration and CT-derived updates of the muscle and temporomandibular-joint parameters. Bayesian optimization with an expected-improvement-plus acquisition rule then searches six clinically controllable cut-plane and donor-positioning variables under an apposition-driven objective and a safety-factor-regularized variant. The workflow was evaluated on three generic defects (body, symphysis, and ramus-body) and a total of 3+1 patient-specific cases, with 3 used for optimization and 1 for validation. In the generic cases, against a common surgical approach, cycle-averaged donor-mandible apposition increased by up to 29 percentage points (329% relative); in the patient-specific cases, against the surgeon-implemented day-5 post-operative configuration, by up to 26 percentage points. A 10% sensitivity analysis over eleven modeling parameters capped the change in the apposition-driven objective at 3% for generic cases and 4% for patient-specific cases, and the longitudinal case showed Dice overlap of 0.70 and 0.76 between predicted apposition and year-1 bone formation. Clinically, this provides surgeons with a pre-operative, image-driven recommendation for cut-plane orientation and donor placement that is predicted to improve union conditions over the configurations currently delivered in the operating room. The optimization and patient-specific modeling code is open source at https://github.com/hamidreza-aftabi/OsteoOpt.

下颌重建贝叶斯优化数字孪生骨愈合

Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。