Photoacoustic imaging of clinical metal needles in tissue
Photoacoustic imaging of clinical metal needles in tissue
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DOI：
10.1117/1.3368686
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发表时间：
2010-03-01
影响因子：
3.5
通讯作者：
Emelianov, Stanislav
中科院分区：
文献类型：
--
作者：
Su, Jimmy;Karpiouk, Andrei;Emelianov, Stanislav
可视化和跟踪暂时或永久植入的金属器械的能力在从诊断到治疗的许多应用中非常重要。具体而言，在当今的临床环境中需要金属针的可靠成像。目前，超声被用于对插入组织中的针进行真实的实时成像。然而，这些图像的诊断价值和跟踪能力在很大程度上取决于针的取向，以及其与组织中的感兴趣区域的接近度。我们研究使用光声成像结合当前的超声成像方法，以获得高对比度图像的常用针在体内。使用插入离体猪组织和组织模拟体模中的21 G和30 G针进行实验。使用与光声成像所需的脉冲激光源连接的超声成像系统对针和周围组织进行成像。结果表明，光声成像，结合超声成像，能够实时，高对比度，高空间分辨率的可视化金属植入物的解剖标志的背景组织。(C)2010年，美国光学仪器工程师学会（Society of Photo-Optical Instrumentation Engineers）[DOI 10.1117/1.3368686]
The ability to visualize and track temporarily or permanently implanted metal devices is important in many applications ranging from diagnosis to therapy. Specifically, reliable imaging of metal needles is required in today's clinical settings. Currently, ultrasound is utilized to image a needle inserted into tissue in real time. However, the diagnostic value and tracking ability of these images depends highly on the orientation of the needle, and also its proximity to regions of interest in the tissue. We examine the use of photoacoustic imaging combined with current ultrasound imaging methods to obtain high-contrast images of commonly used needles in the body. Experiments were performed using 21 G and 30 G needles inserted into ex vivo porcine tissue and tissue-mimicking phantoms. The needles and surrounding tissue were imaged using an ultrasound imaging system interfaced with the pulsed laser source necessary for photoacoustic imaging. The results suggest that photoacoustic imaging, combined with ultrasound imaging, is capable of real-time, high-contrast, and high-spatial-resolution visualization of metal implants within anatomical landmarks of the background tissue. (C) 2010 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3368686]