Interventional multispectral photoacoustic imaging with a clinical ultrasound probe for discriminating nerves and tendons: an ex vivo pilot study.
Interventional multispectral photoacoustic imaging with a clinical ultrasound probe for discriminating nerves and tendons: an ex vivo pilot study.
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DOI：
10.1117/1.jbo.20.11.110503
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发表时间：
2015-11
影响因子：
3.5
通讯作者：
Desjardins AE
中科院分区：
文献类型：
--
作者：
Mari JM;Xia W;West SJ;Desjardins AE
准确有效的神经识别是周围神经阻滞的重要组成部分。虽然超声（US）成像越来越多地被用作一种引导方式，但它通常不能提供足够的对比度来识别周围组织（如肌腱）的神经。电神经刺激器可与超声成像结合使用，用于区分神经与周围组织，但它们不足以可靠地防止神经穿刺，因此非常需要替代方法。本研究首次采用介入多光谱光声（PA）成像系统，在体外直接比较神经和肌腱的信号幅度和光谱。结果表明，该系统在识别神经和肌腱方面的图像对比度明显高于US成像。因此，光声成像作为超声辅助指导周围神经阻滞是有价值的。
Accurate and efficient identification of nerves is an essential component of peripheral nerve blocks. While ultrasound (US) imaging is increasingly used as a guidance modality, it often provides insufficient contrast for identifying nerves from surrounding tissues such as tendons. Electrical nerve stimulators can be used in conjunction with US imaging for discriminating nerves from surrounding tissues, but they are insufficient to reliably prevent neural punctures, so that alternative methods are highly desirable. In this study, an interventional multispectral photoacoustic (PA) imaging system was used to directly compare the signal amplitudes and spectra acquired from nerves and tendons ex vivo, for the first time. The results indicate that the system can provide significantly higher image contrast for discriminating nerves and tendons than that provided by US imaging. As such, photoacoustic imaging could be valuable as an adjunct to US for guiding peripheral nerve blocks.