Hansson Emma, Manjer Jonas, Ringberg Anita
Department of Plastic and Reconstructive Surgery, Skåne University Hospital , Malmö , Sweden.
J Plast Surg Hand Surg. 2014 Aug;48(4):254-8. doi: 10.3109/2000656X.2013.870908. Epub 2013 Dec 16.
Breast volume measurement is valuable in clinical practice, and various methods have been used. Nonetheless, no commonly accepted standard technique exists for clinical everyday use and there is no optimal method that is quick, cheap, minimally invasive, and acceptable for the patient and for the surgeon. Previously, a study has shown that the volume measured with plastic cups differed little from that measured from mastectomy specimens. The aim of the present study was to test the reliability of breast volume measurements with plastic cups as a tool to measure breast volume in everyday clinical practice. The plastic cups were designed by the senior author (AR) and comprise 14 cups from 125 millilitres (ml) to 2000 ml. Six raters measured 12 breasts on the same day. The results show that there is a certain variation between different raters, and that a certain rater seems to consistently measure slightly lower or higher volumes than the other raters. The Intra Class Correlation (ICC) coefficient of average measures between raters is 0.89, that is, the agreement between different raters is high. According to the Bland-Altman plot, the overall assessment of the comparisons of measurements between the different raters shows that the direction of the mean differences is close to zero. The limits of agreements of the differences were within ±56 ml. The coefficient of variation (CV) between different raters was 14%. Breast volume measurement with plastic cups is an easily usable quick and cheap way to measure breast volume in everyday clinical practice. The measurements have an acceptable reliability.
乳房体积测量在临床实践中具有重要价值，并且已经使用了多种方法。然而，目前尚无适用于日常临床使用的普遍接受的标准技术，也没有一种快速、廉价、微创且患者和外科医生都能接受的最佳方法。此前，一项研究表明，用塑料杯测量的体积与乳房切除标本测量的体积差异不大。本研究的目的是测试在日常临床实践中使用塑料杯测量乳房体积的可靠性。塑料杯由资深作者（AR）设计，包括从125毫升（ml）到2000 ml的14个杯子。六名评估者在同一天对12个乳房进行了测量。结果表明，不同评估者之间存在一定差异，并且某个评估者似乎始终比其他评估者测量的体积略低或略高。评估者之间平均测量值的组内相关系数（ICC）为0.89，即不同评估者之间的一致性较高。根据布兰德-奥特曼图，不同评估者测量值比较的总体评估表明，平均差异的方向接近零。差异的一致性界限在±56 ml以内。不同评估者之间的变异系数（CV）为14%。在日常临床实践中，用塑料杯测量乳房体积是一种易于使用、快速且廉价的测量乳房体积的方法。测量结果具有可接受的可靠性。
