Multiresolution foveated laparoscope with high resolvability.
Multiresolution foveated laparoscope with high resolvability.
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具有高分辨率的多分辨率中心凹腹腔镜。
DOI：
10.1364/ol.38.002191
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发表时间：
2013-07-01
期刊：
影响因子：
3.6
通讯作者：
Nguyen M
中科院分区：
文献类型：
--
作者：
Qin Y;Hua H;Nguyen M
在微创手术中，最先进的腹腔镜的一个关键限制是单视图相机系统中视野和空间分辨率之间的权衡。因此，外科手术通常是在一个放大的视角下进行的，这限制了外科医生看到直接关注焦点之外的很多东西的能力，并造成了态势感知的挑战。我们提出了一种多分辨率聚焦腹腔镜（MRFL），旨在解决这一限制。MRFL能够同时实时捕获广角全景和高分辨率图像；它可以像人眼的中央凹一样，对整个手术野的任何区域进行扫描和高分辨率图像处理。MRFL能够以较低的数据带宽要求呈现相当于1000万像素的分辨率。该系统具有80 ~ 180mm的大工作距离（WD）。在距离为80mm时，在物体空间的分辨率约为45 μm，而传统腹腔镜在手术距离为50mm时的分辨率约为250 μm。
A key limitation of the state-of-the-art laparoscopes for minimally invasive surgery is the tradeoff between the field of view and spatial resolution in a single-view camera system. As such, surgical procedures are usually performed at a zoomed-in view, which limits the surgeon’s ability to see much outside the immediate focus of interest and causes a situational awareness challenge. We proposed a multiresolution foveated laparoscope (MRFL) aiming to address this limitation. The MRFL is able to simultaneously capture wide-angle overview and high-resolution images in real time; it can scan and engage the high-resolution images to any subregion of the entire surgical field in analogy to the fovea of human eye. The MRFL is able to render equivalently 10 million pixel resolution with a low data bandwidth requirement. The system has a large working distance (WD) from 80 to 180 mm. The spatial resolvability is about 45 μm in the object space at an 80 mm WD, while the resolvability of a conventional laparoscope is about 250 μm at a typically 50 mm surgical distance.