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[摘要] 目的 探究在腹部腫瘤術后調強放療運用3種不同體位固定技術的擺位誤差和重復性情況。方法 方便選取于2018年5月—2019年5月該院收治的腹部腫瘤術后調強放療患者90例,根據體位固定方式的不同,將其分為隨機分為A組(仰臥位體膜固定)、B組(MT-BBCF碳纖維腹板固定)和C組(改良版MT-BBCF碳纖維腹板固定),各30例。對比治療前和治療后20 d、30 d,兩組患者X軸、Z軸射野中心偏移值的變化情況。結果 在X軸不同時間射野中心點偏移值方面,3組之間差異無統計學意義(P>0.05);與B組相比,在Y軸射野中心偏移值的變化方面,A組治療前(0.15±1.05)、治療后20 d(-0.24±0.73)、治療后30 d(0.15±0.96),C組治療前(0.23±1.12)、治療后20 d(0.23±1.02)、治療后30 d(-0.23±1.08)均與其差異有統計學意義(P<0.05);與B組相比,在Z軸射野中心偏移值的變化方面,A組、C組兩組也與其差異有統計學意義(P<0.05),但A、C兩組差異無統計學意義(P>0.05)。結論 相比于仰臥位體膜固定和MT-BBCF碳纖維腹板固定,在腹部腫瘤術后調強放療中運用改良版MT-BBCF碳纖維腹板固定存在較小的擺位誤差,同時具有最佳的重復性效果,其臨床價值較顯著。
[關鍵詞] 不同體位固定技術;腹部腫瘤;調強放療;擺位誤差;重復性
[中圖分類號] R730.55? ? ? ? ? [文獻標識碼] A? ? ? ? ? [文章編號] 1674-0742(2020)06(b)-0047-03
[Abstract] Objective To investigate the position error and repeatability of three different posture fixation techniques for intensity-modulated radiotherapy after abdominal tumor surgery. Methods Ninety patients with intraoperative intensity-modulated radiotherapy for abdominal tumors treated in the hospital from May 2018 to May 2019 were convenienty selected and randomly divided into group A according to different posture fixation methods (supine position fixation) , Group B (MT-BBCF carbon fiber web fixation) and Group C (modified MT-BBCF carbon fiber web fixation) 30 people each. The changes of X-axis and Z-axis center offset values of the two groups of patients before and after treatment and 20 and 30 days after treatment were compared. Results There was no statistical significantly significance between the three groups in the offset value of the center of the shooting field at different times on the X axis (P>0.05); compared with the group B, in the change of the center offset of the shooting field in the Y axis, group A before treatment (0.15 ± 1.05), 20 d after treatment (-0.24±0.73), 30 d after treatment (0.15 ± 0.96), group C before treatment (0.23 ± 1.12), 20 s after treatment (0.23±1.02), 30 d after treatment (-0.23 ± 1.08), there was a statistically significant difference (P<0.05); compared with group B, in the change of the Z-axis field offset value, the two groups of group A and group C also existed with it statistically significant difference(P<0.05), but the difference between A and C groups was not statistically significant (P>0.05). Conclusion Compared with supine position membrane fixation and MT-BBCF carbon fiber web fixation, the use of modified version of MT-BBCF carbon fiber web fixation in postoperative intensity-modulated radiotherapy for abdominal tumors has a smaller positioning error and has the best repetitive effect, which has significant clinical value.
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(收稿日期:2020-03-14)