CT/MRI融合图像在盆腔肿瘤放疗靶区勾画中的应用  

Application of CT/MRI Image Fusion in the Delineating of the Gross Tumor Target Volumes in the Radiotherapy for Pelvic Cavity Tumor

作　　者：张海南[1] 汤日杰[1] 张书旭[2] 蔡霜[2] 

机构地区：[1]广州医学院附属肿瘤医院放射科,广东广州510095 [2]广州医学院附属肿瘤医院放疗中心,广东广州510095

出　　处：《中国医疗设备》2011年第5期154-156,共3页China Medical Devices

基　　金：广东省科技计划项目(2009B030801360)

摘　　要：目的探讨CT/MRI融合图像在中老年盆腔肿瘤放疗靶区(GTV)勾画中的应用价值。方法 19例盆腔肿瘤患者均在1周内分别进行CT、MRI异机非同步扫描。全部CT和MRI图像手工配准后传送至飞利浦公司的PINNACLE V8.0放射治疗计划系统,并进行图像融合。由有经验的放疗科医师对CT靶区、MRI靶区及CT与MR融合图像肿瘤靶区(GTV)进行勾画及评价分析。结果 GTVFUSION相对GTVCT提高了6.29%、相对GTVMRI提高了11.84%,融合图像对GTV的勾画明显优于单独CT图像或MRI图像。结论 CT/MRI图像融合技术有利于盆腔肿瘤靶区的确定,提高了临床对盆腔肿瘤靶区(GTV)勾画的准确率,利于患者的诊治。Objective To study the value of application of CT/MRI image fusion in the delineating of the gross tumor target volumes in the radiotherapy for pelvic tumor in the middle-aged and elderly patients.Methods Nineteen patients suffering from pelvic tumor underwent CT and MRI examination within one week.All CT and MRI images were manually transported to the Nucletron PLATO Radiation Treatment Planning System（V 8.0,Philips medical corporation）,and CT/MRI images were processed for image fusion.The experienced radiotherapeutic physicians delineated and analyzed the target volume of CT and MRI images,and gross tumor target volume of the CT/MR image fusion.Results The gross tumor target volume of the CT/MR image fusion relative the target volume of CT increased 6.29%,and relative MRI raised 11.84%,CT/MRI image fusion is superior to single CT and MRI image in the delineation of the gross tumor target volume,which was verified by test.Conclusion The technology of CT/MR image fusion can help to confirm target volume for pelvic tumor which will improve the accuracy in demarcating of the gross tumor target volume of pelvic cavity tumor,and promote the diagnosis and treatment of pelvic cavity tumor.

关 键 词：MRI CT 图像融合 靶区勾画 盆腔肿瘤放疗 

分 类 号：R814.3[医药卫生—影像医学与核医学] R683.1[医药卫生—放射医学]