Lesion detectability in diagnostic ultrasound with short-lag spatial coherence imaging.
Lesion detectability in diagnostic ultrasound with short-lag spatial coherence imaging.
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DOI：
10.1177/016173461103300203
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发表时间：
2011-04
影响因子：
2.3
通讯作者：
Trahey GE
中科院分区：
文献类型：
--
作者：
Dahl JJ;Hyun D;Lediju M;Trahey GE
我们展示了一种新的成像技术，称为短滞后空间相干（SLSC）成像，它使用短距离（或滞后）值的相干函数的后向散射超声创建图像。使用场II的模拟被用来证明不同大小的病变的检测和对比声杂波和没有在后向散射数据。在无噪声条件下，基于病变的对比度噪声比（CNR），B模式和SLSC成像在病变检测方面几乎等同。然而，SLSC图像的CNR可以被调整以实现以图像平滑度和分辨率为代价的最佳值。在存在声杂波的情况下，SLSC成像产生比B模式成像显著更高的CNR，并且在噪声增加的情况下保持比B模式更高的图像质量。SLSC图像的压缩被证明是需要在高噪声条件下，但在无噪声和低噪声条件下是不必要的。SLSC成像应用于颈动脉鞘的体内成像，并且证明CNR的显著增益以及颈动脉鞘中的小动脉的可视化。SLSC成像在超声成像的杂波抑制中具有潜在的应用。
We demonstrate a novel imaging technique, named short-lag spatial coherence (SLSC) imaging, which uses short distance (or lag) values of the coherence function of backscattered ultrasound to create images. Simulations using Field II are used to demonstrate the detection of lesions of varying sizes and contrasts with and without acoustical clutter in the backscattered data. B-mode and SLSC imaging are shown to be nearly equivalent in lesion detection, based on the contrast-to-noise ratio (CNR) of the lesion, in noise-free conditions. The CNR of the SLSC image, however, can be adjusted to achieve an optimal value at the expense of image smoothness and resolution. In the presence of acoustic clutter, SLSC imaging yields significantly higher CNR than B-mode imaging and maintains higher image quality than B-mode with increasing noise. Compression of SLSC images is shown to be required under high-noise conditions, but is unnecessary under no- and low-noise conditions. SLSC imaging is applied to in vivo imaging of the carotid sheath, and demonstrates significant gains in CNR as well as visualization of arterioles in the carotid sheath. SLSC imaging has a potential application to clutter rejection in ultrasonic imaging.
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DOI：
10.1109/58.139123
发表时间：
1992-03-01
影响因子：
3.6
作者：
JENSEN, JA;SVENDSEN, NB
通讯作者：
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影响因子：
2.4
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通讯作者：
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发表时间：
1983-01-01
期刊：
IEEE TRANSACTIONS ON SONICS AND ULTRASONICS
影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2005-09-01
影响因子：
3.6
作者：
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通讯作者：
Trahey, GE
DOI：
10.1109/tuffc.2009.1331
发表时间：
2009-11
期刊：
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
影响因子：
--
作者：
Lediju MA;Pihl MJ;Hsu SJ;Dahl JJ;Gallippi CM;Trahey GE
通讯作者：
Trahey GE