CAJ | 학술논문

目的：探讨 CT/MRI融合技术在鼻咽癌放疗靶区勾画中的应用价值。方法对50例经病理证实的鼻咽癌患者进行调强放疗，分别在CT及CT/MRI融合图像下勾画鼻咽癌肿瘤靶区，比较CT组和CT/MRI组勾画的靶区体积的差异性。结果 CT组和CT/MRI组勾画的平均靶区体积分别为（29.18±19.12） cm3和（33.57±20.63） cm3，两组对比有显著性差异（P<0.05）。在T1、T2、T3期中，两组体积对比差异明显（P<0.05）；在T4期中，两组体积对比差异不明显（P>0.05）。结论 CT/MRI融合技术结合CT和MRI两种不同成像技术的优势，有助于进一步提高鼻咽癌放疗靶区勾画的精确性。
목적：탐토 CT/MRI융합기술재비인암방료파구구화중적응용개치。방법대50례경병리증실적비인암환자진행조강방료，분별재CT급CT/MRI융합도상하구화비인암종류파구，비교CT조화CT/MRI조구화적파구체적적차이성。결과 CT조화CT/MRI조구화적평균파구체적분별위（29.18±19.12） cm3화（33.57±20.63） cm3，량조대비유현저성차이（P<0.05）。재T1、T2、T3기중，량조체적대비차이명현（P<0.05）；재T4기중，량조체적대비차이불명현（P>0.05）。결론 CT/MRI융합기술결합CT화MRI량충불동성상기술적우세，유조우진일보제고비인암방료파구구화적정학성。
Objective To explore the clinical value of CT/MRI image fusion technique in the delineating of gross tumor volume in intensity-modulated radiotherapy for nasal pharyngeal cancer (NPC).Methods 50 patients confirmed as NPC by pathology were treated with intensity-modulated radiotherapy. The gross tumor volumes (GTVs) were delineated under CT images and CT/MRI fusion images respectively. Then the differences of GTVs between CT group and CT/MRI group were compared.Results The average GTVs of CT group and CT/MRI group were (29.18±19.12) cm3 and (33.57±20.63) cm3 respectively, and the differences were signiifcant (P<0.05). Comparing to the T stage, the two groups had obvious differences of GTVs on T1, T2 and T3 stage (P<0.05), but not obvious on T4 stage (P>0.05). Conclusion CT/MRI image fusion technology which combines CT and MRI, is helpful to improve the accuracy of delineating gross tumor volume in radiotherapy for NPC.