Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan.
Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan.
Oral Radiol. 2021 Jul;37(3):518-523. doi: 10.1007/s11282-020-00489-0. Epub 2020 Nov 12.
The purpose of this study was to evaluate the effect of postoperative radiotherapy (RT) on temporal volume changes with a cutaneous free flap (CF) and a myocutaneous free flap (MCF).
The subjects were 24 men and 11 women (mean age, 50.5 ± 15.5 years) with tongue or floor of mouth cancer. Twenty-seven cases of CF and eight cases of MCF were selected. The flap volume change of the reconstructed tongue was calculated using computed tomography (CT) images taken immediately and at one year postoperatively using the DICOM image processing software OsiriX®.
The reduction rate in flap volume at one year postoperatively was 82.0 ± 15% in CF without RT, 70.3 ± 26.1% in CF with RT, 88.5 ± 14.7% in MCF without RT, and 99.5 ± 16% in MCF with RT. The MCF volume was significantly higher compared to the CF volume. Although postoperative RT reduced the CF volume by 30%, there was only a slight reduction in the MCF volume.
We evaluated the effect of postoperative RT on volume reduction in 35 cases of the reconstructed tongue with CF and MCF using a computer-assisted volume rendering technique. In this study, the effect of RT on volume reduction was different between the CF and MCF.
本研究旨在评估术后放疗（RT）对皮瓣游离（CF）和肌皮瓣游离（MCF）重建舌体的体积变化的影响。
研究对象为 24 名男性和 11 名女性（平均年龄 50.5±15.5 岁），均患有舌癌或口底癌。选择了 27 例 CF 和 8 例 MCF。使用 DICOM 图像处理软件 OsiriX®对术后即刻和术后 1 年的 CT 图像进行计算，得出重建舌体的皮瓣体积变化。
无 RT 的 CF 皮瓣术后 1 年的体积减少率为 82.0±15%，有 RT 的 CF 皮瓣为 70.3±26.1%，无 RT 的 MCF 皮瓣为 88.5±14.7%，有 RT 的 MCF 皮瓣为 99.5±16%。MCF 皮瓣体积明显高于 CF 皮瓣。尽管术后 RT 使 CF 皮瓣体积减少了 30%，但 MCF 皮瓣体积仅略有减少。
我们使用计算机辅助容积渲染技术评估了 35 例 CF 和 MCF 重建舌体术后 RT 对体积减少的影响。在这项研究中，RT 对 CF 和 MCF 体积减少的影响不同。
