目的探讨动态增强扫描及弥散 加权成像在乳腺癌保乳术前诊断评估的价 值。方法 回顾分析135例经MRI动态增强 VIEWS及弥散加权成像DWI诊断乳腺癌并经 病理证实资料，135例均行MRI动态增强 检查及DWI成像，绘制时间一信号强度曲 线，计算早期强化率及峰值强化率，测量 病灶ADC值，准确测量切除肿瘤/乳房比 例。结果 MRI动态增强扫描对乳腺癌肿瘤 直径≤3cm；切除肿瘤体积/乳房体积比例 ≤20％；单发病灶或病灶局限在同一象 限；腋窝淋巴结无肿大或仅有孤立、活 动、直径的淋巴结≤2cm做保乳手术，肿 瘤两种形态：76.2%单发结节型，23.8%多 发结节型及树枝型。结论 磁共振动态增 强VIEWS及弥散加权成像DWI针对乳腺癌疾 病的诊断及治疗有着明显的优势，在多中 心乳腺癌的显示和乳腺导管方面疾病的判 定均有一定的疗效，并且在切除手术的病 患部位的方面均有较高的临床应用价值。

Objective Discuss preoperative assessment of the value of magnetic resonance dynamic enhanced VIEWS and diffusion weighted imaging DWI in breast cance breastconserving. Methods Retrospective analyze the data confirmed by pathology of 135 cases with breast cancer disease who diagnosis by MRI dynamic enhancement VIEWS and diffusion weighted imaging DWI, 135 cases were performed dynamic enhanced and DWI imaging, drawing time one signal intensity curve, calculate the rate of early enhancement and peak enhancement ratio, measurement of lesion ADC values, accurate measurement of tumor resection / breast ratio. Results Dynamic contrast-enhanced MRI scans for breast tumor diameter ≤ 3cm; resection of the tumor volume / volume ratio of breast ≤ 20%; single lesion or lesions confined to the same quadrant; axillary lymph node enlargement or only isolated, activity, lymph nodes ≤ 2cm in diameter do breast-conserving surgery. Conclusion Magnetic resonance dynamic enhancement VIEWS and diffusion weighted imaging DWI in diagnosis and treatment of breast cancer can have some obvious advantages, in multicenter breast cancer shows and judgment of breast duct disease have certain curative effect, and in patients with surgery to remove part of the aspect all have high clinical application value.