中华放射肿瘤学杂志
中華放射腫瘤學雜誌
중화방사종류학잡지
CHINESE JOURNAL OF RADIATION ONCOLOGY
2011年
2期
106-108
,共3页
梁军%张涛%张寅%唐源%王文卿%陈东福%冯勤付%周宗玫%李明辉%符贵山%张连胜%戴建荣%王绿化
樑軍%張濤%張寅%唐源%王文卿%陳東福%馮勤付%週宗玫%李明輝%符貴山%張連勝%戴建榮%王綠化
량군%장도%장인%당원%왕문경%진동복%풍근부%주종매%리명휘%부귀산%장련성%대건영%왕녹화
锥形束CT%肺肿瘤/放射疗法%图像引导%图像配准%摆位误差
錐形束CT%肺腫瘤/放射療法%圖像引導%圖像配準%襬位誤差
추형속CT%폐종류/방사요법%도상인도%도상배준%파위오차
Cone-beam CT%Lung neoplasms/radiotherapy%Imaged-guided%Imagine registration%Set-up error
目的 研究肺癌锥形束CT(CBCT)图像配准的影响因素.方法 选取2007年间本科采用CBCT作为在线校位的肺癌放疗患者20例.每位患者在疗程中6～19次治疗采集了CBCT图像.根据肺内病变位置与椎体关系分为病变靠近椎体组(A组)和病变远离锥体组(B组),对比两组摆位误差差异.同时对该组病例分别选取从治疗初期、中期和后期CBCT图像,请4位医生分别采用骨配准和灰度配准,比较不同医生间和不同配准方式间差异.结果 A组和B组在头脚、左右、前后方向上的摆位误差分别为-1.31、1.24、-1.88 mm和0.10、1.37、-1.26 mm(t=0.07、0.05、-0.12,P=0.554、0.652、0.321).4位医生骨配准摆位误差头脚方向分别为-0.05、-0.01、0.05、-0.16(F=-0.01,P=0.887),左右方向分别为0.56、0.35、0.51、0.43 mm(F=-0.01,P=0.880),前后方向分别为-1.16、-1.20、-0.88、-1.03 mm(F=0.04,P=0.555);灰度配准摆位误差头脚方向分别为-0.32、-0.34、-0.39、-0.37 mm(F=-0.01,P=0.874),左右方向分别为0.34、0.54、-0.04、0.27 mm(F=-0.03,P=0.622),前后方向分别为-1.12、-1.15、-1.13、-1.04 mm(F=0.00,P=0.812).结论 采用相同配准框和图像质量下,肺癌患者肺内病变位置、不同配准方式和不同医生对图像引导放疗中CBCT图像配准无明显影响.
目的 研究肺癌錐形束CT(CBCT)圖像配準的影響因素.方法 選取2007年間本科採用CBCT作為在線校位的肺癌放療患者20例.每位患者在療程中6～19次治療採集瞭CBCT圖像.根據肺內病變位置與椎體關繫分為病變靠近椎體組(A組)和病變遠離錐體組(B組),對比兩組襬位誤差差異.同時對該組病例分彆選取從治療初期、中期和後期CBCT圖像,請4位醫生分彆採用骨配準和灰度配準,比較不同醫生間和不同配準方式間差異.結果 A組和B組在頭腳、左右、前後方嚮上的襬位誤差分彆為-1.31、1.24、-1.88 mm和0.10、1.37、-1.26 mm(t=0.07、0.05、-0.12,P=0.554、0.652、0.321).4位醫生骨配準襬位誤差頭腳方嚮分彆為-0.05、-0.01、0.05、-0.16(F=-0.01,P=0.887),左右方嚮分彆為0.56、0.35、0.51、0.43 mm(F=-0.01,P=0.880),前後方嚮分彆為-1.16、-1.20、-0.88、-1.03 mm(F=0.04,P=0.555);灰度配準襬位誤差頭腳方嚮分彆為-0.32、-0.34、-0.39、-0.37 mm(F=-0.01,P=0.874),左右方嚮分彆為0.34、0.54、-0.04、0.27 mm(F=-0.03,P=0.622),前後方嚮分彆為-1.12、-1.15、-1.13、-1.04 mm(F=0.00,P=0.812).結論 採用相同配準框和圖像質量下,肺癌患者肺內病變位置、不同配準方式和不同醫生對圖像引導放療中CBCT圖像配準無明顯影響.
목적 연구폐암추형속CT(CBCT)도상배준적영향인소.방법 선취2007년간본과채용CBCT작위재선교위적폐암방료환자20례.매위환자재료정중6～19차치료채집료CBCT도상.근거폐내병변위치여추체관계분위병변고근추체조(A조)화병변원리추체조(B조),대비량조파위오차차이.동시대해조병례분별선취종치료초기、중기화후기CBCT도상,청4위의생분별채용골배준화회도배준,비교불동의생간화불동배준방식간차이.결과 A조화B조재두각、좌우、전후방향상적파위오차분별위-1.31、1.24、-1.88 mm화0.10、1.37、-1.26 mm(t=0.07、0.05、-0.12,P=0.554、0.652、0.321).4위의생골배준파위오차두각방향분별위-0.05、-0.01、0.05、-0.16(F=-0.01,P=0.887),좌우방향분별위0.56、0.35、0.51、0.43 mm(F=-0.01,P=0.880),전후방향분별위-1.16、-1.20、-0.88、-1.03 mm(F=0.04,P=0.555);회도배준파위오차두각방향분별위-0.32、-0.34、-0.39、-0.37 mm(F=-0.01,P=0.874),좌우방향분별위0.34、0.54、-0.04、0.27 mm(F=-0.03,P=0.622),전후방향분별위-1.12、-1.15、-1.13、-1.04 mm(F=0.00,P=0.812).결론 채용상동배준광화도상질량하,폐암환자폐내병변위치、불동배준방식화불동의생대도상인도방료중CBCT도상배준무명현영향.
Objective To analyze the influencing factors of cone-beam CT (CBCT) imagine registration in lung cancer. Methods From Mar. 2007 to Dec. 2007, 20 patients with lung cancer were treated with IGRT. The imagines of CBCT were collected from 6 to 19 fractions during the patients' radiotherapy. To compare the difference of set-up errors between the two groups according to the distance from the lesion in lung to the centrum. At the same time, CBCT imagines from the first, middle and the last fraction of these patients' radiotherapy were registrated in bone and grey methods by four doctors. The difference of set-up errors between different doctors and registrated methods were compared. Results The mean values of set-up errors were ＜2 mm in the two groups without significant difference (x:-1.31mm vs 0. 10 mm (t=0. 07,P=0.554);y:1.24 mm vs 1.37 mm (t=0. 05,P=0. 652);z: - 1.88mm vs -1.26mm (t= -0. 12,P=0.321)). The mean values of set-up errors were ＜ 1.3 mm in four doctors and registrated methods without significant difference, for bone registration,x: -0. 05 mm, -0. 01 mm,0. 05 mm, -0.12 mm and -1.31 mm ( F=-0.01,P=0.887) ;y:0.56 mm,0.35 mm,0.51 mm and 0.43 mm (F= -0.01,P=0.880);z: -1.16 mm, -1.20 mm, -0.88 mm and -1.03 mm (F= -0.04,P=0. 555 ), for grey registration ,x: -0.32 mm, -0.341 mm, -0.395 mm and - 0.37 mm(F=-0.01, P=0.874);y:0.34 mm,0.54 mm, -0.04 mm and 0.27 mm (F= -0.03,P=0.622);x:-1.12 mm,- 1.15 mm, - 1.13 mm and - 1.04 mm (F=0. 00,P=0. 812). Conclusions With the same registrated box and imagine quality, the location of the lesions in lung, registred methods and different doctors are not the influencing factors for CBCT imagine registration.
