医学信息
醫學信息
의학신식
MEDICAL INFORMATION
2015年
24期
57-58,59
,共3页
调强放疗%宫颈癌%Xio%Precise
調彊放療%宮頸癌%Xio%Precise
조강방료%궁경암%Xio%Precise
Cervical cancer%Intensity modulated radiotherapy%Precise%Xio
目的研究笔者所在放疗中心的两种治疗计划系统Xio和precise的剂量学差异性。方法选取5例宫颈癌患者，使用Tmocon医生工作站勾画靶区及危机器官，分别导入Xio4.2.1和Precise2.02两种治疗计划系统，基于在射野方向和数目相同、保证处方剂量线包绕95%靶区体积的前提下,分别设计调强放疗计划。比较这2种计划的靶区的适形度指数CI和均匀性指数HI，危机器官膀胱的V50，还有子野数和机器跳数。结果 Xio和Precise做出来的两种计划均能满足临床要求。计划靶区体积适形度指数值分别为(0.76±0.12)和(0.72±0.13)(=5.171,>0.05),均匀性指数值分别为(14±2)%和(13±1)%(=1.87,>0.05)；膀胱受量分别为(42.7±7)%和(41.5±6.9)%(=0.336,>0.05),机器跳数(MU)分别为(536±67)MU和(399±52)MU(=2.788，<0.05)；子野数分别为(62±12)和(19±3)(=2.245,<0.05)。结论 Xio和Precise的剂量差异性无统计学意义。但Xio的机器跳数和子野数显著增加,增加了机器的磨损和治疗实施时间。
目的研究筆者所在放療中心的兩種治療計劃繫統Xio和precise的劑量學差異性。方法選取5例宮頸癌患者，使用Tmocon醫生工作站勾畫靶區及危機器官，分彆導入Xio4.2.1和Precise2.02兩種治療計劃繫統，基于在射野方嚮和數目相同、保證處方劑量線包繞95%靶區體積的前提下,分彆設計調彊放療計劃。比較這2種計劃的靶區的適形度指數CI和均勻性指數HI，危機器官膀胱的V50，還有子野數和機器跳數。結果 Xio和Precise做齣來的兩種計劃均能滿足臨床要求。計劃靶區體積適形度指數值分彆為(0.76±0.12)和(0.72±0.13)(=5.171,>0.05),均勻性指數值分彆為(14±2)%和(13±1)%(=1.87,>0.05)；膀胱受量分彆為(42.7±7)%和(41.5±6.9)%(=0.336,>0.05),機器跳數(MU)分彆為(536±67)MU和(399±52)MU(=2.788，<0.05)；子野數分彆為(62±12)和(19±3)(=2.245,<0.05)。結論 Xio和Precise的劑量差異性無統計學意義。但Xio的機器跳數和子野數顯著增加,增加瞭機器的磨損和治療實施時間。
목적연구필자소재방료중심적량충치료계화계통Xio화precise적제량학차이성。방법선취5례궁경암환자，사용Tmocon의생공작참구화파구급위궤기관，분별도입Xio4.2.1화Precise2.02량충치료계화계통，기우재사야방향화수목상동、보증처방제량선포요95%파구체적적전제하,분별설계조강방료계화。비교저2충계화적파구적괄형도지수CI화균균성지수HI，위궤기관방광적V50，환유자야수화궤기도수。결과 Xio화Precise주출래적량충계화균능만족림상요구。계화파구체적괄형도지수치분별위(0.76±0.12)화(0.72±0.13)(=5.171,>0.05),균균성지수치분별위(14±2)%화(13±1)%(=1.87,>0.05)；방광수량분별위(42.7±7)%화(41.5±6.9)%(=0.336,>0.05),궤기도수(MU)분별위(536±67)MU화(399±52)MU(=2.788，<0.05)；자야수분별위(62±12)화(19±3)(=2.245,<0.05)。결론 Xio화Precise적제량차이성무통계학의의。단Xio적궤기도수화자야수현저증가,증가료궤기적마손화치료실시시간。
Objective To compare the dosimetric dif erence in intensity modulation radiotherapy planning designed respectively by Xio and Precise planning systems for cervical cancer. Methods Five patients treated in 2014 were selected in our center.For each patient,two treatment plans were designed.In each plan,the PTV prescription dose was 50Gy.The dosimetric were assessed in planning target(PTV)and organ of around risk(OAR). Results The two kinds of plans.the PTV average conformal index were(0.76±0.12)and(0.72±0.13)(=5.171, >0.05);average homogeneity index were (14±2)%and(13±1)%(=1.87, >0.05);the volume of bladder received 50 Gy(V50)were(42.7±7)%and(41.5±6.9)%(t=0.336, >0.05);the total monitor units(MU)were(536±67) and(399±52)(=2.788,<0.05);the segment numbers were (62±12)and (19±3)(=2.245, <0.05). Conclusion There were no significant dif erences of CI,H I,and V50 of bladder between XIO and Precise.There were fewer MUs and segment numbers in Precise plan than Xio,Precise plan could reduce the machine abrasion and treatment time,but the segment numbers are higher significantly than XIO plan.
