个性化腰垫与体膜联合固定对宫颈癌放疗患者摆位精度及稳定性的影响

doi:10.11958/20252617

天津医药 ›› 2026, Vol. 54 ›› Issue (3): 299-302.doi: 10.11958/20252617

个性化腰垫与体膜联合固定对宫颈癌放疗患者摆位精度及稳定性的影响

李明¹(), 金建华¹, 吴建亭¹, 王君辉¹, 许俊²^,^△()

1 南通大学附属肿瘤医院放疗科（邮编226361）
2 江苏省肿瘤医院放疗中心

收稿日期:2025-07-31 修回日期:2025-10-29 出版日期:2026-03-15 发布日期:2026-03-17
通讯作者: △E-mail：xujun1984001@163.com
作者简介:李明（1984），男，主管技师，主要从事肿瘤放疗质量控制与质量保证方面研究。E-mail：cabbage2451310@163.com
基金资助:
南通市科技计划指导性项目(MSZ20181);南通市卫生健康委员会科研课题(QN2023024)

The impact of combined fixation with personalized lumbar cushions and body membranes on the positioning accuracy and stability of patients with cervical cancer undergoing radiotherapy

LI Ming¹(), JIN Jianhua¹, WU Jianting¹, WANG Junhui¹, XU Jun²^,^△()

1 Department of Radiation Oncology, the Affiliated Tumor Hospital of Nantong University, Nantong 226361, China
2 Radiation Oncology Center, Jiangsu Cancer Hospital

Received:2025-07-31 Revised:2025-10-29 Published:2026-03-15 Online:2026-03-17
Contact: △E-mail：xujun1984001@163.com

李明, 金建华, 吴建亭, 王君辉, 许俊. 个性化腰垫与体膜联合固定对宫颈癌放疗患者摆位精度及稳定性的影响[J]. 天津医药, 2026, 54(3): 299-302.

LI Ming, JIN Jianhua, WU Jianting, WANG Junhui, XU Jun. The impact of combined fixation with personalized lumbar cushions and body membranes on the positioning accuracy and stability of patients with cervical cancer undergoing radiotherapy[J]. Tianjin Medical Journal, 2026, 54(3): 299-302.

摘要/Abstract

摘要：

目的探讨个性化腰垫与体膜联合固定对宫颈癌放疗患者摆位精度及稳定性的影响。方法将72例宫颈癌放疗患者随机分为试验组、对照Ⅰ组、对照Ⅱ组，各24例。试验组采用个性化腰垫+体膜联合固定，对照Ⅰ组采用体膜固定，对照Ⅱ组采用真空垫固定。运用锥形束CT（CBCT）测量3组患者的摆位误差，比较3组患者摆位误差大小及变异系数（CV）。结果 3组X、Z轴向平移误差比较差异无统计学意义，试验组Y轴向平移误差小于对照Ⅰ组和对照Ⅱ组。3组Y、Z轴向旋转误差比较差异无统计学意义，试验组X轴向旋转误差小于对照Ⅰ组（P<0.05）。试验组X、Y轴向平移误差CV小于对照Ⅰ组、对照Ⅱ组，X轴向旋转误差CV小于对照Ⅱ组（P<0.05）。结论宫颈癌放疗患者采用个性化腰垫+体膜联合固定能够提高Y轴向摆位精度，降低X轴向旋转误差，具有较好的摆位稳定性。

关键词: 宫颈肿瘤, 放射疗法, 个性化腰垫, 体膜, 摆位误差

Abstract:

Objective To explore the impact of personalized waist cushion combined with body membrane fixation on the positioning accuracy and stability in patients with cervical cancer radiotherapy. Methods A total of 72 cervical cancer radiotherapy patients were randomly divided into three groups: the experimental group, the control groupⅠand the control group Ⅱ, with 24 patients in each group. The experimental group used a personalized waist cushion combined with body membrane fixation, the control group Ⅰ used body membrane fixation, and the control group Ⅱ used a vacuum cushion. Cone-beam CT (CBCT) was used to measure the positioning errors of the three groups, and the positioning errors and coefficients of variation (CV) were compared between the three groups of patients. Results There were no significant differences in the X and Z-axis translational errors between the three groups. The Y-axis translational error was smaller in the experimental group than that in the control group Ⅰ and the control group Ⅱ. In terms of rotational errors, there were no significant differences in the Y and Z-axis rotational errors between the three groups, but the X-axis rotational error was smaller in the experimental group than that in the control group Ⅰ (P<0.05). Regarding the CV of positioning errors, the CV of X and Y-axis translational errors was smaller in the experimental group than that in the control group Ⅰ and the control group Ⅱ, and the CV of X-axis rotational error was smaller than that of the control group Ⅱ (P<0.05). Conclusion For patients with cervical cancer undergoing radiotherapy, the combined fixation of personalized waist cushion and body membrane can improve Y-axis positioning accuracy, reduce X-axis rotational errors and has better positioning stability.

Key words: uterine cervical neoplasms, radiotherapy, personalized lumbar cushions, body membranes, setup errors

中图分类号:

R737.33，R730.55

图/表 5

参考文献 21

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组别	年龄/岁	膀胱尿量/mL	BMI/（kg/m²）
对照Ⅰ组	55.4±9.3	291.9±123.4	21.2（18.8，26.9）
对照Ⅱ组	52.8±11.0	226.2±128.0	21.4（19.0，26.3）
试验组	51.4±8.2	247.6±120.6	20.0（17.0，24.5）
F或H	1.045	1.753	2.410

组别	年龄/岁	膀胱尿量/mL	BMI/（kg/m²）
对照Ⅰ组	55.4±9.3	291.9±123.4	21.2（18.8，26.9）
对照Ⅱ组	52.8±11.0	226.2±128.0	21.4（19.0，26.3）
试验组	51.4±8.2	247.6±120.6	20.0（17.0，24.5）
F或H	1.045	1.753	2.410

组别	n	X轴	Y轴	Z轴
对照Ⅰ组	24	2.73±1.26	2.75±1.19	2.10±1.23
对照Ⅱ组	24	2.18±1.15	2.74±1.35	2.40±1.24
试验组	24	2.00±1.13	1.93±0.86^ab	1.69±1.09
F		2.443	4.724^＊	2.122

组别	n	X轴	Y轴	Z轴
对照Ⅰ组	24	2.73±1.26	2.75±1.19	2.10±1.23
对照Ⅱ组	24	2.18±1.15	2.74±1.35	2.40±1.24
试验组	24	2.00±1.13	1.93±0.86^ab	1.69±1.09
F		2.443	4.724^＊	2.122

组别	n	X轴	Y轴	Z轴
对照Ⅰ组	24	1.32±0.63	0.90±0.67	1.07±0.66
对照Ⅱ组	24	0.87±0.57	1.10±0.74	1.29±0.83
试验组	24	0.74±0.65^a	0.98±0.61	0.90±0.65
F		6.005^＊	0.493	1.834

个性化腰垫与体膜联合固定对宫颈癌放疗患者摆位精度及稳定性的影响

The impact of combined fixation with personalized lumbar cushions and body membranes on the positioning accuracy and stability of patients with cervical cancer undergoing radiotherapy

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参考文献 21

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组别	X轴	Y轴	Z轴
对照Ⅰ组	68.4（59.1，78.4）	68.7（60.3，78.2）	66.0（59.4，74.8）
对照Ⅱ组	68.4（59.6，76.5）	69.2（60.1，74.6）	68.9（58.0，76.1）
试验组	61.9（53.8，65.0）^ab	70.0（56.4，65.3）^ab	62.8（54.2，66.1）
H	8.030^＊	9.601^＊	5.603

组别	X轴	Y轴	Z轴
对照Ⅰ组	68.5（59.6，75.5）	67.9（60.1，76.6）	68.1（58.5，76.7）
对照Ⅱ组	69.7（56.6，76.9）	67.9（57.5，74.8）	67.8（58.5，74.8）
试验组	62.1（55.1，65.6）^b	62.5（51.6，66.7）	63.1（53.1，68.0）
H	7.502^＊	6.167	5.563

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