The application value of a cervical collar combined with a vacuum pad in the positioning of Cyberknife radiosurgery for cervical spine metastases
10.3760/cma.j.cn112271-20230209-00031
- VernacularTitle:颈托联合真空垫在射波刀颈椎转移灶体位固定中的应用分析
- Author:
Guoquan LI
1
;
Zeyu DING
;
Wensheng FU
;
Zhiyong YANG
;
Sheng ZHANG
;
Xi KANG
Author Information
1. 南华大学核科学技术学院，衡阳 421001
- Keywords:
Positioning method;
Cyberknife;
Stereotactic radiotherapy;
Cervical spine metastasis;
Cervical collar
- From:
Chinese Journal of Radiological Medicine and Protection
2023;43(9):712-716
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the clinical application value of personalized positioning using a cervical collar combined with a vacuum pad in the Cyberknife radiosurgery for cervical spine metastases.Methods:This study enrolled 68 patients with cervical spine metastases to be treated with Cyberknife stereotactic radiotherapy for cervical spines. These patients consisted of 41 males and 27 females, aged from 43 to 78 years (average: 51.5 years). They were divided into groups A, B, and C using the random number table method. The patient positioning in these groups was achieved using a cervical collar combined with a vacuum pad (personalized positioning), a vacuum pad, and a small head mold, respectively. After the first treatment, the comfort levels of the positioning molds during treatment were investigated. After radiotherapy, the average deviations in translational and rotational directions, the minimum tolerance distance (dxAB), the minimum rotational deviation angle (drAB), the proportion of false nodes, and the comfort level of the three positioning method were acquired for analysis.Results:The three groups showed statistically significant differences in the inf-sup, left-right, ant-post, pitch, roll, and yaw directions during the first treatment ( F = 7.13, 2.56, 3.41, 4.21, 2.71, 8.14, P < 0.05). Compared with groups B and C, Group A had significantly lower dxAB, drAB, and the proportion of false nodes, showing statistically significant differences ( F = 5.06, 4.31, 3.30, P < 0.05). Furthermore, patients in groups A and B felt more comfortable with the positioning molds than those in Group C ( χ2 = 12.46, P < 0.05), with no statistically significant differences between groups A and B ( P > 0.05). Conclusions:For patients with cervical spine metastases undergoing Cyberknife radiosurgery for cervical spines, the personalized positioning using a cervical collar combined with a vacuum pad can improve the accuracy and safety of Cyberknife spinal tracking while remaining the comfort level.
