Vectra 3D成像辅助模拟假体隆乳术后形态有效性评估

Evaluation of the simulation effectiveness of prosthetic breast augmentation with Vectra 3D system

目的探讨Vectra 3D XT对假体隆乳术患者术后形态预估的准确性。方法收集2014年7月至2015年12月就诊于广东省第二人民医院的要求进行假体隆乳的患者32例，术前采用Vectra进行扫描并模拟术后乳房形态，测量模拟形态的SN-N线（胸骨上凹至乳头距离）、N-N线（两侧乳头连线距离）和乳房体积。患者行假体隆乳术后1～6个月返院复查，再次测量上述指标，分析模拟与实际SN-N线、N-N线及乳房体积之间的差异，并请18位有经验的整形外科医生组成专家团，对模拟与实际乳房形态一致性进行评分，6分以上为一致性佳。测量结果采用独立样本t检验进行统计分析。结果Vectra模拟乳房SN-N线（左/右）、N-N线及乳房体积（左/右）分别为（19.3±1.4） cm/（19.3±1.2） cm、（19.0±1.5） cm、（369.0±64.5） ml/（370.0±82.7） ml，术后乳房实际测量值分别为（19.0±1.3） cm /（19.0±1.2） cm、（18.4±1.3） cm、（365.6±81.0） ml/（360.2±84.2） ml，术前模拟与术后实际比较，差异均无统计学意义（P〉0.05）。18位专家对32例患者评分平均为（7.9±1.4）分，所有患者术前乳房模拟与实际乳房形态一致性佳。结论Vectra 3D系统可以较好地模拟假体隆乳术后的乳房形态及体积，方法简单而有效。

ObjectiveTo evaluate the accuracy of the simulation with a 3D stereophotogrammetric imaging system（Vectra） for the prosthetic breast augmentation.MethodsFrom July 2014 to December 2015, 32 patients received Vectra scanning prior to breast augmentation. The simulations of post-operation images were created by the software.The distance of SN-N line, N-N line and the volume of the simulated breast was measured by the software. The patients came back for a follow-up 1-6 months post-operation. At that time, the same type of data was collected again, and the difference of simulated and real post-operation breast was calculated. 18 professional doctors scored the accuracy of the simulation using a 1-10 scale. We defined 6-10 as＂of great accuracy＂. The scores were analyzed using the independent-sample t test.ResultsThe simulated distance of SN-N line（L/R）, N-N line（L/R） and the volume（L/R） was （19.3±1.4） cm/（19.3±1.2） cm、（19.0±1.5） cm and （369.0±64.5） ml/（370.0±82.7） ml. The real distance of SN-N line（L/R）, N-N line（L/R） and the volume（L/R） was （19.0±1.3） cm /（19.0±1.2） cm、（18.4±1.3） cm and （365.6±81.0） ml/（360.2±84.2） ml. Those data of simulating and real post-operation breast was statistically insignificant （P〉0.05）. The score of the simulation accuracy by 18 professional doctors was 7.9±1.4, which means the doctors agreed the accuracy of Vectra for the breast augment simulation was great.ConclusionsThe Vectra can simulate the figure of breast augmentation with good accuracy.