Effects of magnetic resonance diffusion weighted image on the target volume delineation of advanced esophageal cancer
10.7652/jdyxb201704029
- VernacularTitle:核磁共振弥散加权成像对局部晚期食管癌放疗靶区勾画的作用
- Author:
Xiaobin CHANG
;
Xiangyang WU
;
Yuan YUAN
- Keywords:
magnetic resonance imaging (MRI);
diffusion weighted imaging (DWI);
computed tomography (CT);
esophageal cancer;
target area
- From:
Journal of Xi'an Jiaotong University(Medical Sciences)
2017;38(4):611-616
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the value of DWI imaging combined with T2WI imaging and CT image fusion technology and explore the role of DWI imaging in the determination of target areas in radiotherapy for advanced esophageal cancer.Methods Twenty-three patients with locally advanced esophageal cancer were included in this study.All the patients were fixed by a heat plastic device.Each patient was examined by CT,T2WI and DWI scan in the same position as the radiotherapy treatment.Images obtained from the three sequences were transmitted to the Eclipse 11.0 treatment planning system.All images were registered at Eclipse workstation as to normalized mutual information registration.The target areas were delineated by the clinical radiation physicians in the CT imaging,and CT and DWI fusion images.The target areas of the two kinds of image were evaluated using fusion function and statistical function of the treatment planning system.Results Target parameters differed significantly between CT base and CT/MRI fusion base.The results of the target volume outline closer by CT and MRI fusion image base in the three groups of clinicians.Conclusion The target volume between the groups is closer by using CT and DWI fusion image.DWI image has a good assisting effect in determining the target area of locally advanced esophageal cancer.
