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量化多频超声成像使用窄带脉冲进行组织特征化

Joshua Hanson, Chaodong Wu, Kenneth Hoyt

Investigative radiology

|January 12, 2026

概括

多频超声波 (MFUS) 通过量化超声波衰减和散射器大小,准确地测量小鼠肝脏肥胖症. 这种新的技术显示出对诊断代谢功能障碍相关的脂肪性肝病 (MASLD) 的希望.

科学领域:

医疗成像医学成像
生物物理学的生物物理.
定量超声波检测定量超声波检测

背景情况:

与代谢功能障碍相关的脂肪性肝病 (MASLD) 是一个日益严重的健康问题.
对MASLD需要准确的,非侵入性的诊断工具.
多频超声波 (MFUS) 是一种新兴的定量成像技术.

研究的目的:

为了实现一个MFUS获取序列.
用MASLD.的动物模型验证MFUS的定量测量.
评估MFUS用于肝脏组织特征.

主要方法:

使用MFUS获得的射频 (RF) 数据,其中有24个频率转移脉冲.
计算了MFUS梯度,超声衰减系数和相对散射器大小 (RSS).
在实验室中与模仿组织的幽灵和体内与被养标准或MCD饮食的小鼠进行了验证.

主要成果:

在体外MFUS准确估计了衰减系数.
MFUS表现出对散射器大小的敏感性和改善的对比度和噪声比率 (CNR).
在体内,MCD养的小鼠表现出增加的衰减和减少的RSS,与MASLD一致.

结论:

MFUS成像对衰减和散射器大小的变化敏感.
预先的临床前结果验证了MFUS在MASLD中的肝脏组织特征.
MFUS是一种创新的技术,具有进一步优化和应用的潜力.

关键词:

衰减减弱化是一种肝脏肥胖症肝脏肥胖症多频超声波多频超声波是什么相对分散器的大小相对分散器大小.组织特征的表征.超声波超声波是指超声波的使用.

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