Vessel position estimation system based on pixel-wise refocusing using light field imaging
Vessel position estimation system based on pixel-wise refocusing using light field imaging
复制标题
基于光场成像逐像素重聚焦的血管位置估计系统
DOI：
10.1117/12.2511192
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Yamada Kenji
中科院分区：
文献类型：
--
作者：
Yoshimoto Kayo;Takahashi Hideya;Yamada Kenji
静脉穿刺是一种通常在医院进行的医疗实践。然而，由于多次穿刺失败，有时还会发生神经损伤和血管损伤等医疗事故，这是一个困难的过程。这是由于血管的视觉识别困难造成的。虽然血管的深度信息也很重要，但在临床实践中，现有的系统只能通过二维图像来显示血管。在我们之前的研究中，为了估计血管的三维位置，我们提出了基于光场成像的再聚焦系统。该方法利用近红外光在各深度处强调血管的截面信息。然而，受活体组织强散射特性的影响，使用红外光获得的血管透视图像是模糊的。这是因为从其他路径散射的光与直接穿过血管吸收影响的光重叠。为了抑制这种模糊，构造了一个去除散射光的系统。为了消除散射的影响，采用了透镜阵列的角滤波方法。由于该方法采用了透镜阵列，因此与重聚焦技术有很高的亲缘性。首先，我们组织了与我们所提出的系统相关的表达式。然后，利用血管仿真对象对系统的基本原理进行了评价。
Venipuncture is a medical practice which is ordinarily performed in hospital. However, it is a difficult procedure as the occurrence of many failure of the puncture and sometimes medical accidents such as nerve damage and blood vessel damage are reported. This is caused by the difficulty of visually identification of the blood vessel. Although the depth information of the blood vessel is also important, the existing system in clinical practice can visualize vessels only by two dimensional images. In our previous study, to estimate the three dimensional position of the blood vessel, we have proposed the system based on refocusing using light field imaging. This method can obtain cross-sectional information of blood vessel emphasized using near infrared light at each depth. However, under the influence of the strong scattering characteristics of living tissue, vascular fluoroscopic images obtained using infrared light are blurred. This is because the light scattered from other paths overlaps with the light traveling straight through the influence of blood vessel absorption. In order to suppress this blur, a system for removing scattered light is constructed. In order to eliminate the influence of scattering, a method of angular filtering using a lens array is adopted. Since this method uses lens arrays, it has high affinity with refocusing technology. First, we organize the expression related our proposed system. Then, evaluate the basic principles of the proposed system by using blood vessel simulated object.
基于光场成像重聚焦的船舶位置估计基础研究
DOI：
10.1109/bmeicon.2015.7399566
发表时间：
2015
期刊：
2015 8th Biomedical Engineering International Conference (BMEiCON)
影响因子：
--
作者：
Kayo Yoshimoto;Hodaka Yamada;Hideya Takahashi
通讯作者：
Hideya Takahashi
影响因子：
2.8
作者：
Jacobson, AF;Winslow, EH
通讯作者：
Winslow, EH