Parametric imaging of tumor perfusion and neovascular morphology using ultrasound

Parametric imaging of tumor perfusion and neovascular morphology using ultrasound
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使用超声对肿瘤灌注和新生血管形态进行参数成像

DOI:
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发表时间:
2015
期刊:
Medical Imaging
影响因子:
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通讯作者:
K. Hoyt
K. Hoyt
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文献类型:
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作者:
K. Hoyt

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详细介绍了一种新的图像处理策略,用于从一系列动态对比增强超声(DCE-US)图像中同时测量肿瘤灌注和新生血管形态学参数。本文还介绍了一种利用骨骼化的新生血管数据局部定位肿瘤灌注参数的技术。利用模拟图像对新血管骨架化技术和相关参数估计的方差(误差)进行了检验。我们收集了6例确诊为浸润性乳腺癌的女性患者的初步DCE-US图像数据集,使用配备L9-3 MHz换能器和Definity造影剂的Philips iU22超声系统。模拟数据表明,尽管在较低的信噪比(SNR)下可能出现测量误差,但新血管形态参数估计是可重复的。实验结果表明,我们的方法可以从DCE-US图像中进行肿瘤灌注和新生血管形态学测量。未来的工作将扩展我们的初步临床发现,并将我们的图像处理策略扩展到三维空间,以实现整个肿瘤的表征。
A new image processing strategy is detailed for the simultaneous measurement of tumor perfusion and neovascular morphology parameters from a sequence of dynamic contrast-enhanced ultrasound (DCE-US) images. A technique for locally mapping tumor perfusion parameters using skeletonized neovascular data is also introduced. Simulated images were used to test the neovascular skeletonization technique and variance (error) of relevant parametric estimates. Preliminary DCE-US image datasets were collected in 6 female patients diagnosed with invasive breast cancer and using a Philips iU22 ultrasound system equipped with a L9-3 MHz transducer and Definity contrast agent. Simulation data demonstrates that neovascular morphology parametric estimation is reproducible albeit measurement error can occur at a lower signal-to-noise ratio (SNR). Experimental results indicate the feasibility of our approach to performing both tumor perfusion and neovascular morphology measurements from DCE-US images. Future work will expand on our initial clinical findings and also extent our image processing strategy to 3-dimensional space to allow whole tumor characterization.
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发表时间: 2012-07
影响因子: --
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