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一种使用动态直流偏差在超快超声波成像中的对比增强的零减法成像方法

Xin Yan, Xiaodong Yang, Lingling Jing

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

|April 4, 2025

概括

这项研究引入了一种用于超快超声波的新对比增强无减法成像 (NSI) 方法. 该技术显著改善了图像对比度,并保持了高分辨率,这对于准确的临床诊断至关重要.

科学领域:

医疗成像医学成像
生物医学工程生物医学工程
超声波技术超声波技术

背景情况:

超快超声波成像对于临床诊断至关重要.
零减法成像 (NSI) 提高了侧面分辨率,但对比度和斑点质量较差.
现有的方法难以平衡分辨率和对比度.

研究的目的:

开发一种用于超快超声波成像的新型对比增强NSI方法.
解决传统NSI的局限性,特别是对比度差和斑点图案.
提高临床超声波的准确性和诊断价值.

主要方法:

提出了一种使用动态直流偏差的新型对比增强NSI.
构建的动态直流偏差与通用连贯因子 (GCF) 和西格形转换.
实施了统一的像素强度的规范化方案.
使用模拟,幻影和体内超声数据评估性能.

主要成果:

与原来的NSI (幻影) 相比,在对比率 (197%),对比度与噪声比率 (341%),斑点SNR (302%) 和通用CNR (106%) 中取得了显著的改进.
主叶宽度略大于原来的NSI,但比DAS和GCF窄一些.
在保持高分辨率的同时,证明了卓越的对比度增强.

结论:

拟议的方法大大改善了超快超声波中的图像对比度.
它有效地保持了高分辨率,克服了NSI的限制.
这一进步对超快超声波成像的临床应用具有重大潜力.

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