University Breast Center Franconia, Department of OB/Gyn, University Hospital Erlangen, Universitaetsstrasse 21-23, 91054, Erlangen, Germany.
Aesthetic Plast Surg. 2011 Oct;35(5):847-55. doi: 10.1007/s00266-011-9708-x. Epub 2011 Apr 13.
Breast volume is a relevant measure for the prevention and prediction of diseases and for aesthetic surgery. This study evaluated a new technique to determine breast volume and compared measures using a three-dimensional (3D) body surface scanner and magnetic resonance imaging (MRI) scans, with the latter used as the standard method.
Both MRI scans and body surface 3D scans were obtained from 22 women. For each method, breast volumes were assessed. The MRI calculations of the breast volumes were performed by a specially trained radiologist using analysis software. A textured 3D image was generated by a calibrated digital texture camera after breast surface data acquisition. The volume assessment of the 3D photography was calculated using a software package after manual outlining of the breast and automated projection of a dorsal limit. Linear regression was used to predict the MRI volume assessment with the 3D image volume assessment.
The mean breast volume according to MRI volumetry was 442.8 ml on the left side and 471.8 ml on the right side. The mean breast volume using a 3D body surface volume assessment method was 273.8 ml (observer A) and 226.2 ml (observer B) on the left side and 284.4 ml (observer A) and 234.9 ml (observer B) on the right side. The use of linear regression models showed R (2) values of 0.59-0.77. The mean time for MRI recording and volume assessment was 68.0 ± 14.1 min for both sides and 11.6 ± 1.5 min for 3D recording and volume assessment.
The 3D surface-based volume measurements are feasible in terms of time and can predict the MRI breast volume with sufficient accuracy. This might facilitate the broad use of such an assessment technique in a large-scale epidemiologic study using breast volume as a study aim. Additionally, further development of volume assessments could help to implement this technique in breast surgery procedures.
乳房体积是预防和预测疾病以及美容手术的一个相关指标。本研究评估了一种新的技术来测量乳房体积，并比较了使用三维（3D）体表面扫描仪和磁共振成像（MRI）扫描的测量结果，后者被用作标准方法。
对 22 名女性同时进行 MRI 扫描和体表面 3D 扫描。使用两种方法评估乳房体积。MRI 计算由经过专门培训的放射科医生使用分析软件进行。在获得乳房表面数据后，使用校准的数字纹理相机生成纹理化的 3D 图像。通过手动勾勒乳房和自动投影背侧限制，使用软件包计算 3D 摄影的体积评估。使用线性回归预测 MRI 体积评估与 3D 图像体积评估之间的关系。
根据 MRI 体积测量，左侧乳房平均体积为 442.8ml，右侧乳房平均体积为 471.8ml。使用 3D 体表面体积评估方法，左侧乳房平均体积为 273.8ml（观察者 A）和 226.2ml（观察者 B），右侧乳房平均体积为 284.4ml（观察者 A）和 234.9ml（观察者 B）。使用线性回归模型，R（2）值为 0.59-0.77。MRI 记录和体积评估的平均时间为两侧各 68.0±14.1 分钟，3D 记录和体积评估的平均时间为 11.6±1.5 分钟。
基于表面的 3D 体积测量在时间上是可行的，并且可以以足够的精度预测 MRI 乳房体积。这可能有助于在使用乳房体积作为研究目标的大规模流行病学研究中广泛使用这种评估技术。此外，进一步开发体积评估技术可以帮助将该技术应用于乳房手术程序。
