目的: 评价磁共振全身弥散加权技术，对已确诊肿瘤病人或偶发局部病变而了解全身状况的评估及
其临床应用价值。方法: 回顾性分析了60 例行磁共振全身弥散加权成像检查的病人，其中已确诊原发肿瘤病史
的病人42 例，8 例病人未明确原发肿瘤及10 例临床体检病人。通过对全身弥散加权成像结果的观察，对肿瘤进
行N 分期，观察原发肿瘤及转移瘤的部位、大小，探讨磁共振全身弥散加权成像技术对肿瘤病人的原发病灶及全
身转移灶的评估。结果: 磁共振全身弥散加权成像可以清晰显示肿瘤病人的原发病灶及全身转移病变，结合局
部全身MＲI 冠状位T2WI 脂肪抑制序列，可以更好的区别病灶及伪影。头颈部的DWI 图像有不可攻克的伪影，
必须结合平扫，以免遗漏病变。结论: 磁共振全身弥散加权成像技术可以清晰的显示肿瘤的原发病灶及全身转
移灶，能够较精准的为临床医师提供客观影像依据，因其无创无辐射的优点，使其成为临床医师首选的检查
方法。

Objective: To evaluate the value of whole－body magnetic resonance diffusion weighted
imaging in the diagnosis of patients with tumor or local recurrence，assessing the general status of tumor
patients．Methods: Retrospective analysis of 60 cases of cancer patients in the Affiliated Hospital of Inner
Mongolia Medical University，All patients underwent magnetic resonance whole body diffusion
weighted examination， 42cases had been diagnosed with primary tumor，and 8 patients had no definite
primary tumor，and 10 patient who wanted to physical examination． Through the observation of the
results of the whole －body diffusion weighted imaging，Staging of tumor， the site and size of primary
tumor and metastatic tumor were observed．To evaluate the value of whole－body magnetic resonance diffusion
weighted imaging in primary lesion and metastasis in patients with cancer．Results: Whole－body
magnetic resonance diffusion weighted imaging can clearly show the primary lesion and metastatic lesions
in patients with tumor． Combined with local systemic MRI coronary T2WI fat suppression se-
quence，we can better distinguish between lesions and artifacts．DWI images of the head and neck have
an artifact that can not be overcome，we should combined with plain scan， so as to avoid the missing lesion．
Conclusion: Whole－body magnetic resonance diffusion weighted imaging can clearly show the primary
lesion of the tumor and the metastasis of the whole body．It can be more accurate for clinicians to
provide objective imaging basis．Because of non invasive and non radiation，making it preferred examination
for clinical doctors．

R445．2

 收稿日期: 2016－08－11; 修回日期: 2016－10－12
基金项目: 内蒙古自治区卫生和计划生育委员会( 201302070) ; 内蒙古医科大学青年创新基金( YKD 2013 QNCX020)
作者简介: 吴琼( 1978－) ，女，内蒙古医科大学附属医院影像科副主任医师，在读博士。
通讯作者: 韩晓东，主任医师，E－mail: xiaodong57@ 126．com 内蒙古医科大学附属医院影像科， 010050