摘要
目的 探讨乳腺恶性肿瘤的MRI平扫及动态增强扫描的影像特点。材料与方法 2 7例乳腺恶性肿瘤行MRI平扫 ,其中12例行动态增强扫描 ,结合手术病理结果 ,分析乳腺恶性肿瘤的形态、信号、强化特点以及与病理类型的关系。结果 2 7例患者中平扫 15例具有不规则形态、T2 WI不均匀高信号、周边有毛刺等典型恶性征象 ,余 12例需行动态增强扫描者 ,7例呈“快进快出”方式强化。浸润性小叶癌T2 WI信号较低 ,强化不明显 ,呈不典型表现 ;粘液腺癌及叶状囊肉瘤肿块较大 ,周边毛刺不明显 ,强化呈“快进慢出”方式 ,表现亦不典型。
Objective To study the morphologic features of breast malignancy on both the plain and dynamic contrast enhanced MRI.Materials and Methods Plain MRI was performed in 27 patients with breast malignancy, of which dynamic contrast enhanced MRI was carried out in 12. Imaging findings, including lesion's configuration, signal intensity and enhancement pattern, were analyzed and compared with pathologic results.Results On plain MRI, typical signs of malignancy, such as irregular shape, heterogeneous hyper intensity (T 2WI) and spiculated margin, were seen in 15 cases. Of 12 patients underwent dynamic contrast enhanced MRI, 7 showed positive washout phenomenon. Mucinous adenocarcinoma and phyllode cystosarcoma were manifested as a larger mass without marked spiculates and demonstrated 'fast in and fast out' enhancement pattern.Conclusion Plain MRI, combined with dynamic contrast enhanced scanning, is an effective method for the diagnosis of breast malignancy.
出处
《临床放射学杂志》
CSCD
北大核心
2001年第11期839-842,共4页
Journal of Clinical Radiology
