磁共振脂肪抑制技术及其临床应用的价值

MRI Fat Suppression Technique and Its Clinical Application

目的:探讨磁共振脂肪抑制技术(化学位移选择法和短T1反转恢复序列)及其临床应用价值。方法:收集2008-03—2008-07行磁共振检查中实施脂肪抑制技术73例,检查主要包括头颅、颅底、鼻咽部、颈部、骨关节以及腹部盆腔等部位,对比研究图像的质量得出压脂技术的应用对临床诊断的价值。结果:头颅病变7例;眼部疾病6例;颅底病变10例:其中鼻咽癌8例、口咽部病变2例;颈部病变16例:其中神经源性肿瘤6例、淋巴瘤3例、转移瘤5例、脂肪瘤2例;椎体及骨关节病变中,骨挫伤8例、转移瘤3例、血管瘤3例、脂肪瘤堆积1例;腹部盆腔病变11例,肝脏病变4例,胰腺病变4例、盆腔病变8例;合理地应用脂肪抑制技术能够使病灶的边缘勾画得更加清楚,清楚地鉴别出含脂肪组织的病变,增强扫描对病变施加脂肪抑制使病灶更加突出,提供较常规MRI检查更多的信息。结论:采用脂肪抑制技术可以明显地改善图像质量,提高病变的诊断率,是磁共振检查的一项重要技术。

Objective To discuss magnetic resonance fat suppression technique, such as Chemical Shift Selective and Short TI Inversion Recovery Sequence, and its clinical value. Methods 73 cases undergoing MRI fat suppression during March 2008 to July 2008 were adopted as the subjects, with such site examined respectively as the skull, basalis, nasopharynx, neck, bones and joints as well as abdominal pelvis. Comparative study of image quality was performed to determine the di- agnostic value of MRI fat suppression technique. Results Of the all cases, 7 ones suffered from skull lesions, 6 ones from eye diseases, 11 ones from abdominal pelvic diseases, 4 ones from liver diseases, 4 ones from pancreas disorders, and 8 ones from pelvic diseases. Meanwhile, of 10 cases of basalis diseases, there were 8 ones of nasopharyngeal carcinoma and 2 ones of oropharynx disorder. Of 16 cervical disorders, there were 6 ones of neurogenic tumor, 3 ones of leucoma, 5 ones of metastatic tumor and 2 ones of lipoma. Of 15 cases of vertebral disorders and osteoarthropathia, there were 8 ones of bone contusion, 3 ones of metastatic tumor, 3 ones of angeioma and 1 case of lipoma. Fat suppression technique, with the lesion edge outlined clearly and the lesions containing adipose tissue identified, provided more information than regular MRI. Conclusion The fat-suppression technique can significantly improve image quality, enhance disease diagnosis rate, and thus is an important technology in MRI examination.