Department of Aesthetic and Reconstructive Breast Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Ba-Da-Chu Road, Shi-Jing-Shan District, Beijing, 100144, China.
Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.
Aesthetic Plast Surg. 2021 Oct;45(5):2009-2014. doi: 10.1007/s00266-020-02113-2. Epub 2021 Jan 25.
Three-dimensional (3D) imaging offers an objective and quantitative way to evaluate the breast volume. In this study, we aimed to investigate whether arm position can be a factor influencing the measurement of breast volume and which arm position is more stable when using 3D breast imaging in evaluating the fat volume retention rate in autologous fat grafting for breast augmentation.
Patients undergoing breast augmentation with autologous fat grafting in our department were selected for the first part of this study. Preoperative 3D breast imaging was performed at three different arm positions: at the sides, akimbo and with hands on the head. Scans on each arm position were repeated on the first day after surgery, taking six scans in total. Breast volume change (BVC) was compared before and after surgery. The patients planning to receive bilateral mammaplasty in our department were selected for the second part of this study. Two repeated 3D scans were performed at the sides, akimbo and hands on the head, and then, the breast volume change error (BVCE) was compared.
Twenty-five patients (n = 50 breasts) were included in the first part of study. For the patients who received 100-200 ml fat injection, compared with hands on the head, a statistically significant difference in the average BVC was found at the sides and akimbo (p = 0.02). For the patients receiving more than 200 ml fat injection, there was no statistically significant difference between the groups (p > 0.05). Twenty-six patients (n = 52 breasts) were enrolled in the second part. For the average BVCE, there was no significant difference between the groups (p = 0.11).
The arm position during 3D breast imaging, to some extent, affects the evaluation of BVC after breast augmentation using autologous fat grafting, particularly for patients receiving less fat grafting. The arm position should be kept consistent when using 3D breast imaging in evaluating the fat volume retention rate.
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三维（3D）成像提供了一种客观、定量的方法来评估乳房体积。本研究旨在探讨手臂位置是否会影响乳房体积的测量，并在使用 3D 乳房成像评估自体脂肪移植隆乳术后脂肪体积保留率时，哪种手臂位置更稳定。
选择在我院行自体脂肪移植隆乳术的患者作为本研究的第一部分。在三种不同的手臂位置（侧位、双手抱肘位和双手置于头后位）进行术前 3D 乳房成像。在术后第一天重复每个手臂位置的扫描，总共进行六次扫描。比较手术前后乳房体积变化（BVC）。选择在我院行双侧乳房整形术的患者作为本研究的第二部分。在侧位、双手抱肘位和双手置于头后位重复进行两次 3D 扫描，然后比较乳房体积变化误差（BVCE）。
本研究第一部分纳入 25 例患者（n=50 侧乳房）。对于接受 100-200ml 脂肪注射的患者，与双手置于头后位相比，侧位和双手抱肘位的平均 BVC 差异有统计学意义（p=0.02）。对于接受超过 200ml 脂肪注射的患者，组间差异无统计学意义（p>0.05）。本研究第二部分纳入 26 例患者（n=52 侧乳房）。对于平均 BVCE，组间差异无统计学意义（p=0.11）。
在使用自体脂肪移植隆乳术评估 3D 乳房成像后的 BVC 时，手臂位置在一定程度上会产生影响，尤其是对于接受较少脂肪移植的患者。在使用 3D 乳房成像评估脂肪体积保留率时，手臂位置应保持一致。
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