A finite element model to accurately predict real deformations of the breast
A finite element model to accurately predict real deformations of the breast
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DOI：
10.1016/j.medengphy.2008.01.005
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发表时间：
2008-11-01
影响因子：
2.2
通讯作者：
Doblare, M.
中科院分区：
文献类型：
--
作者：
del Palomar, A. Perez;Calvo, B.;Doblare, M.
大多数乳房整形手术要么是肿瘤干预后的重建手术（肿瘤切除术、四象限切除术、乳房切除术……），要么是美容手术，既增大又缩小。以目前的技术，不能完全保证这些程序的结果。通常，手术计划仅基于乳房的摄影和人体测量学研究。其中，整形外科医生遇到的困难之一是乳房形状随着患者的位置而明显变化。因此，规划一套手术方法来帮助整形外科医生，并保证患者干预的成功结果是越来越必要的。为了建立一种可靠的模拟方法来预测乳房手术后患者的具体结果，本研究开始尝试将乳房的空间特征在躺姿和站立姿之间联系起来。提出了乳房的生物力学模型，并将其应用于有限元环境中，以预测乳房在不同位置的变形。将得到的形状与多模态图像进行比较，而将乳房表面位移与手动识别的地标和3D扫描仪图像进行比较。从结果可以得出结论，本文提出的模型合理地近似了乳房对重力的反应，因此为外科医生计划此类手术提供了准确和有用的信息。(c) 2008年合同。Elsevier Ltd.出版。版权所有。
Most surgical procedures in breast plastic surgery are either reconstructive procedures following oncologic interventions (tumorectomy, quadrantectomy, mastectomy...) or aesthetic ones, both augmentation and reduction. With current techniques, the results of such procedures cannot be fully guaranteed. Usually, surgical planning is based on a photographic and anthropometric study of the breast only. Among others, one of the difficulties that the plastic surgeons have is the noticeable change of the breast shape with the position of the patient. Thus, it is more and more necessary to plan a presurgical methodology to help the plastic surgeon and guarantee the patient a successful result of the intervention. In order to establish a reliable simulation method that could predict a patient-specific outcome after breast surgery, this study started trying to correlate spatial features of the breast between lying and standing up positions. A biomechanical model of breast was proposed and implemented into a finite element context to predict deformations, and from these the breast shape in different positions. The resulting shapes were compared with multimodal images, whereas the breast surface displacements were compared with manually identified landmarks and 3D scanner images. From the results, it can be concluded that the model hereby presented reasonably approximates breast response to gravity forces, therefore providing accurate and useful information to the surgeon planning such surgical procedures. (C) 2008 IPEM. Published by Elsevier Ltd. All rights reserved.