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提高肝结节的可见性和诊断分类使用超声波局部减弱系数斜率成像

Iman Rafati¹, François Destrempes², Ladan Yazdani¹

¹Laboratory of Biorheology and Medical Ultrasonics, University of Montreal Hospital Research Center, Montréal, Québec, Canada; Institute of Biomedical Engineering, University of Montreal, Montréal, Québec, Canada.

Ultrasound in medicine & biology

|January 31, 2025

概括

定量超声波的使用方法

科学领域:

医疗成像医学成像
诊断性的超声波检查
肝病学肝病学是一种肝病学.

背景情况:

乙模式超声波在区分良性和恶性肝结节方面面临挑战.
准确的表征对于适当的患者管理至关重要.

研究的目的:

为了评估定量超声波局部衰减系数斜率 (LACS) 成像的疗效.
评估LACS提高肝结节的可见性和特征的能力.

主要方法:

对97名患有肝结节的成年患者进行了前性横截面研究.
使用无幻影方法获得的LACS图像.
用对比度和噪声比率 (CNR) 评估结节的可见性;根据ROC曲线下的面积 (AUC),灵敏度和特异性分类的分类准确性.

主要成果:

与B模式超声波相比,LACS成像产生了显著更高的CNR (p < 0.0001).
区分结核的AUC为0.85,恶性结核 (0.93) 的值高于良性结核 (0.76).
在LACS的0.94dB/cm/MHz值下,可以实现83%的灵敏度和82%的特异性来区分病变类型.

结论:

通过LACS成像,可以提高肝结节的可见性.
定量LACS分析改善了良性和恶性肝结节之间的差异化.
在肝病变的特征化中,LACS显示出作为一种有价值的诊断工具的潜力.

关键词:

良性结节是一种良性的结节.肝癌是一种肝癌.肝脏结节肝脏结节局部减弱系数斜率的局部减弱系数恶性结节恶性结节节点分化节点分化定量超声波的使用方法超声波超声波是指超声波的使用.

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