MRI动态增强减影扫描增强方式对乳腺良恶性病灶的诊断价值

Diagnostic Value on Mammary Gland Focal Benign and Malignant with MRI Digital Subtraction

目的:探讨乳腺MRI三维动态增强减影技术病灶增强方式对乳腺良恶性病灶的鉴别诊断价值。方法:分析109个经手术病理证实的乳腺肿瘤病灶的MRI资料,所有病例术前均行MRI三维动态增强扫描、减影成像。在增强形态、早期增强率、峰值时间、信号强度-时间曲线等诊断指标的基础上,评价病灶增强方式对乳腺良恶性病灶的鉴别诊断价值。结果:乳腺癌最特异性征象为MRI动态增强扫描增强方式,中后期造影剂由边缘向中央充填,即充填型。其诊断敏感性为82.9%,特异性为79.0%,准确率为80.7%。结论:乳腺MRI动态增强扫描病灶充填型强化方式对乳腺癌的诊断具有重要意义。

Objective To study the diagnostic value on mammary gland focal benign and malignant with MRI digital subtraction. Methods By analyzing 109 histopathology cases of breast neoplasm which can be use three dimensional dynamic contrast and MRI digital subtraction. Based on early-phase enhancement rate peak time, time-signal intensity curve and enhanced lesions way, the diagnostic value on it was evaluated. Results The specificity signs of breast carcinoma are enhanced ways on MRI enhancement scanning. The filling type is contrast agent filled from edge to centre. The sensitivity is 82.9%; specificity is 79.0%; accurate rate is 80.7%. Conclusion The aggrandizement form on filling type of breast MRI digital subtraction scanning focus has obvious advantages in breast carcinoma diagnosis.