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磁共振全身弥散成像对胃肠道恶性肿瘤的术后随访价值 预览 被引量:5

Application of whole-body diffusion-weighted imaging on gastrointestinal malignant tumors
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摘要 目的探讨3.0 T全身磁共振成像的技术对于胃肠道恶性肿瘤性疾病的术后随访价值。材料与方法对19例术后随访的胃肠道恶性肿瘤患者行WBMRI(DWI+T2WI),后处理平台为GE ADW4.6工作站。Functool工具拼接横断面弥散图像,得到HD-MIP图像、黑白反转图像(类'PET'图像)及伪彩色图像;Pasting工具拼接冠状面T2加权图像,得到全身冠状面T2加权图像,再经图像融合得到类'PET-MR'图像。结果 19例患者(其中胃弥漫性大B细胞淋巴瘤2例,胃癌8例,结肠癌7例,直肠癌2例)均获得图像质量良好的全身磁共振图像。发现恶性转移性病例6例,阳性率约32%。结论使用头颈联合线圈及体线圈接收方法可以改善中心频率漂移现象,得到符合诊断需要的全身弥散图像。3.0T MR全身弥散成像可清晰显示胃肠道恶性肿瘤的转移灶,对胃肠道恶性肿瘤的术后随访和辅助诊断具有重要价值。 Objective: To discuss the technical feasibility of whole body diffusion weighted imaging(WB-DWI) on 3.0 T magnetic resonance imaging(MRI).To evaluate the auxiliary diagnostic role of WB-DWI in patients with gastrointestinal malignant tumors by detection of primary tumors and metastasis. Materials and Methods: Nineteen patients with gastrointestinal malignancy operation history were enrolled in our study. All patients received whole body MRI examination. The magnetic resonance(MR) examination was performed on 3.0 T MR scanner using coils. The images were reviewed separately by two radiologists. Results: A total of 8 metastatic lesions in 4 regions of 7 patients were detected by whole body DWI. One patient with stomach cancer had both liver metastasis and lymph nodes metastasis. Conclusions: The WB-DWI images that meet the diagnostic needs can be obtained on 3.0 T MRI. WB-DWI reveals excellent detection of metastasis of gastrointestinal malignant tumors.
作者 魏来 朱荆皓 彭屹峰 WEI Lai;ZHU Jing-hao;PENG Yi-feng;Department of Radiology,Shanghai Putuo Hospital,Shanghai University of Traditional Chinese Medicine;
出处 《磁共振成像》 CAS CSCD 2016年第11期847-850,共4页 Chinese Journal of Magnetic Resonance Imaging
关键词 弥散磁共振成像 全身成像 胃肠肿瘤 Diffusion magnetic resonance imaging Whole body imaging Gastrointestinal neoplasms
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