Toward the improvement of image-guided interventions for minimally invasive surgery: Three factors that affect performance
Toward the improvement of image-guided interventions for minimally invasive surgery: Three factors that affect performance
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DOI：
10.1518/001872006776412162
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发表时间：
2006-03-01
期刊：
影响因子：
3.3
通讯作者：
Mitra, S
中科院分区：
文献类型：
--
作者：
DeLucia, PR;Mather, RD;Mitra, S
目的：本研究的目的是测量成像设备的特定功能对微创手术相关任务的影响，并调查此类任务中的认知和知觉因素。背景：虽然影像引导介入治疗在管理信息系统中的应用给患者带来了好处，但它们也给外科医生带来了缺陷，包括深度知觉的降低和视野的缩小。确定影响性能的设计因素非常重要。方法：在两个导航实验中，观察者通过物体馈入管道镜，直到它到达目标。测量任务完成时间和物体形状判断。在一项运动感知实验中，观察者报告了一条在光圈后面移动的线的方向。测量了与视野减小相关的运动错觉。结果：当提供物体外部的预览时，在物体中的导航更快。通过预览(与无预览相比)和主动观看(与被动观看相比)，对物体形状的判断更准确。使用矩形或旋转的八角形观察孔(与圆形相比)时，运动错觉降低。结论：当外科医生建立手术环境的心理模型时，当外科医生(而不是助手)控制相机时，当图像的形状被设计为减少视觉错觉时，导航性能可能会得到提高。应用：当(A)视觉辅助设备允许外科医生保持对手术环境的心理模型时，(B)图像被非圆形孔约束，以及(C)外科医生手动控制相机时，手术工具与健康组织之间的意外接触可能会减少。
Objectives: The objectives were to measure the impact of specific features of imaging devices on tasks relevant to minimally invasive surgery (MIS) and to investigate cognitive and perceptual factors in such tasks. Background: Although image-guided interventions used in MIS provide benefits for patients, they pose drawbacks for surgeons, including degraded depth perception and reduced field of view (FOV). It is important to identify design factors that affect performance. Method: In two navigation experiments, observers fed a borescope through an object until it reached a target. Task completion time and object shape judgments were measured. In a motion perception experiment, observers reported the direction of a line that moved behind an aperture. A motion illusion associated with reduced FOV was measured. Results: Navigation through an object was faster when a preview of the object's exterior was provided. Judgments about the object's shape were more accurate with a preview (compared with none) and with active viewing (compared with passive viewing). The motion illusion decreased with a rectangular or rotating octagonal viewing aperture (compared with circular). Conclusions: Navigation performance may be enhanced when surgeons develop a mental model of the surgical environment, when surgeons (rather than assistants) control the camera, and when the shape of the image is designed to reduce visual illusions. Application: Unintentional contact between surgical tools and healthy tissues may be reduced during MIS when (a) visual aids permit surgeons to maintain a mental model of the surgical environment, (b) images are bound by noncircular apertures, and (c) surgeons manually control the camera.