Spectrally encoded fiber-based structured lighting probe for intraoperative 3D imaging.
Spectrally encoded fiber-based structured lighting probe for intraoperative 3D imaging.
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DOI：
10.1364/boe.2.003119
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发表时间：
2011-11-01
影响因子：
3.4
通讯作者：
Elson DS
中科院分区：
文献类型：
--
作者：
Clancy NT;Stoyanov D;Maier-Hein L;Groch A;Yang GZ;Elson DS
微创手术（MIS）期间器官形状和结构的三维量化可以通过允许多模态或术前图像数据（US/MRI/CT）与实时光学图像的配准来提高精度。结构化照明是一种通过将已知图案投影到组织上来获得3D信息的技术，尽管目前这些系统倾向于仅用于宏观成像或开放式程序而不是内窥镜检查。为了考虑遮挡，其中投影特征可能从视图中隐藏和/或与相邻点混淆，已经开发了一种灵活的多光谱结构化照明探头，其使用超连续谱激光器用特定波长标记每个投影点。当由标准内窥镜摄像机成像时，可以使用其RGB值对其进行分割，并在摄像机校准后计算其3D坐标。探头本身足够小（直径1.7 mm），可用于常用医用内窥镜的活检通道。因此，手术机器人也可以利用这项技术来解决MIS中的导航和可视化问题，并帮助开发先进的外科手术，如自然腔道内窥镜手术。
Three dimensional quantification of organ shape and structure during minimally invasive surgery (MIS) could enhance precision by allowing the registration of multi-modal or pre-operative image data (US/MRI/CT) with the live optical image. Structured illumination is one technique to obtain 3D information through the projection of a known pattern onto the tissue, although currently these systems tend to be used only for macroscopic imaging or open procedures rather than in endoscopy. To account for occlusions, where a projected feature may be hidden from view and/or confused with a neighboring point, a flexible multispectral structured illumination probe has been developed that labels each projected point with a specific wavelength using a supercontinuum laser. When imaged by a standard endoscope camera they can then be segmented using their RGB values, and their 3D coordinates calculated after camera calibration. The probe itself is sufficiently small (1.7 mm diameter) to allow it to be used in the biopsy channel of commonly used medical endoscopes. Surgical robots could therefore also employ this technology to solve navigation and visualization problems in MIS, and help to develop advanced surgical procedures such as natural orifice translumenal endoscopic surgery.