Department of Aesthetic and Plastic Breast Surgery, Chinese Academy of Medical Sciences, Shijingshan District, Beijing, China.
Aesthetic Plast Surg. 2012 Oct;36(5):1134-9. doi: 10.1007/s00266-012-9944-8. Epub 2012 Jul 26.
Measurement of volumetric change after augmentation mammaplasty is of great significance to plastic surgeons. This study aimed to introduce a new method using a three-dimensional (3D) scanning technique to measure volumetric change after augmentation mammaplasty.
Preoperative 3D scans of 10 breasts were included in the study. A simulated postoperative breast scan was constructed using software. The true value of volumetric change was calculated. Volumetric change was measured and repeated 10 times by the traditional method and the new method. One investigator used the traditional method, and two investigators used the new method. The difference from the true value between the two methods and the intraclass coefficient (ICC) for each method was evaluated. Comparison of agreement with the true value and comparison of agreement using the new method between the two investigators were made using a Bland-Altman analysis.
The mean breast volumetric change was 256.1 ± 61.1 ml for the new method, 281.9 ± 73.7 ml for the traditional method, and 256.0 ± 61.0 ml for the true value. The difference from the true value for the traditional method was significantly greater than for the new method. The ICC was 0.9999 for the new method and 0.993 for the traditional method. Bland-Altman analysis showed a 95 % confidence interval (CI) of -40.9 to 92.7 ml for the traditional method and -0.9 to 1.2 ml for the new method. Comparison of agreement between investigators 1 and 2 showed a 95 % CI of -0.9 to 1.0 ml. The limits of agreement were ±1.0 ml.
The proposed new method can provide excellent accuracy, repeatability, and reproducibility in measuring volumetric change after augmentation mammaplasty using a 3D scanning technique.
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测量隆乳术后的体积变化对于整形医生来说具有重要意义。本研究旨在介绍一种使用三维（3D）扫描技术测量隆乳术后体积变化的新方法。
本研究纳入了 10 例乳房的术前 3D 扫描。使用软件构建模拟的术后乳房扫描。计算真实的体积变化值。使用传统方法和新方法测量并重复 10 次体积变化。一名研究人员使用传统方法，两名研究人员使用新方法。评估两种方法与真实值的差异以及每种方法的组内相关系数（ICC）。使用 Bland-Altman 分析比较两种方法与真实值的一致性，并比较两名研究人员使用新方法的一致性。
新方法的乳房平均体积变化为 256.1±61.1ml，传统方法为 281.9±73.7ml，真实值为 256.0±61.0ml。传统方法与真实值的差异明显大于新方法。新方法的 ICC 为 0.9999，传统方法为 0.993。Bland-Altman 分析显示传统方法的 95%置信区间（CI）为-40.9 至 92.7ml，新方法为-0.9 至 1.2ml。比较研究人员 1 和 2 的一致性显示 95%CI 为-0.9 至 1.0ml。一致性界限为±1.0ml。
本研究提出的新方法使用 3D 扫描技术测量隆乳术后的体积变化，可以提供出色的准确性、可重复性和再现性。
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