肿瘤研究与临床
腫瘤研究與臨床
종류연구여림상
CANCER RESEARCH AND CLINIC
2014年
9期
624-625
,共2页
激光定位系统%改进型腹板%摆位误差
激光定位繫統%改進型腹闆%襬位誤差
격광정위계통%개진형복판%파위오차
Laser positioning system%Improved belly board%Setup error
目的 探讨激光定位系统对盆腔肿瘤患者放疗体位重复性的影响.方法 选取40例盆腔肿瘤患者分别利用激光定位系统进行摆位(20例)和不利用激光定位系统进行摆位(20例),并用锥形束CT(CBCT)在线验证,分析摆位误差情况.结果 利用激光定位系统摆位误差在X、Y、Z轴上分别为(2.63±1.07) mm、(2.38±1.28) mm、(2.46±1.21) mm;未利用激光定位系统摆位误差在X、Y、Z轴上分别为(3.04±1.22) mm、(2.55±1.35) mm、(3.09±1.37) mm.两者相比,X、Z轴方向线性摆位误差差异有统计学意义(P值分别为0.040、0.003),Y轴上差异无统计学意义(P=0.432).结论 利用激光定位系统对改进型腹板患者进行摆位,能有效提高精确放疗患者治疗中体位的重复性.
目的 探討激光定位繫統對盆腔腫瘤患者放療體位重複性的影響.方法 選取40例盆腔腫瘤患者分彆利用激光定位繫統進行襬位(20例)和不利用激光定位繫統進行襬位(20例),併用錐形束CT(CBCT)在線驗證,分析襬位誤差情況.結果 利用激光定位繫統襬位誤差在X、Y、Z軸上分彆為(2.63±1.07) mm、(2.38±1.28) mm、(2.46±1.21) mm;未利用激光定位繫統襬位誤差在X、Y、Z軸上分彆為(3.04±1.22) mm、(2.55±1.35) mm、(3.09±1.37) mm.兩者相比,X、Z軸方嚮線性襬位誤差差異有統計學意義(P值分彆為0.040、0.003),Y軸上差異無統計學意義(P=0.432).結論 利用激光定位繫統對改進型腹闆患者進行襬位,能有效提高精確放療患者治療中體位的重複性.
목적 탐토격광정위계통대분강종류환자방료체위중복성적영향.방법 선취40례분강종류환자분별이용격광정위계통진행파위(20례)화불이용격광정위계통진행파위(20례),병용추형속CT(CBCT)재선험증,분석파위오차정황.결과 이용격광정위계통파위오차재X、Y、Z축상분별위(2.63±1.07) mm、(2.38±1.28) mm、(2.46±1.21) mm;미이용격광정위계통파위오차재X、Y、Z축상분별위(3.04±1.22) mm、(2.55±1.35) mm、(3.09±1.37) mm.량자상비,X、Z축방향선성파위오차차이유통계학의의(P치분별위0.040、0.003),Y축상차이무통계학의의(P=0.432).결론 이용격광정위계통대개진형복판환자진행파위,능유효제고정학방료환자치료중체위적중복성.
Objective To investigate influence of laser positioning system to position repeatability of patients treated with radiotherapy for pelvic tumors.Methods Forty patients with pelvic tumors were divided into two groups,using laser positioning system positioning (20 cases) and conventional positioning (20 cases),respectively,CBCT was used to verify and analyze the setup errors of two groups.Results The setup errors on X,Y and Z axes in laser positioning system positioning group were (2.63±1.07) mm,(2.38±1.28) mm and (2.46±1.21) mm,they were (3.04±1.22) mm,(2.55±1.35) mm and (3.09±1.37) mm in conventional positioning group.It has significance reduce on X and Z axes (P =0.040,0.003,respectively) by using laser positioning system,and has no significance on Y axis (P =0.432).Conclusion It can improve patient positioning repeatability effectively by using laser positioning system for patient positioning.
