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Image Overlay

Aim

The aim of this research is to investigate the feasibility of implementing a head-mounted tracking system with an augmented reality environment to provide the surgeon with visualization of both the tumor margin and the surgical instrument in order to create a more accurate and natural overlay of the affected tissue versus healthy tissue. It allows the surgeon to see the precise boundaries of the tumor for neurosurgical procedures, while at the same time providing contextual overlay of the surgical tools intraoperatively which are displayed on optical see-through goggles worn by the surgeon. This makes it feasible for augmented reality, as the overlay provides the most pertinent information without unduly cluttering the visual field. It provides the benefits of navigation, visualization, and all of the capabilities of the existing modalities and is expected to be comfortable and intuitive for the surgeon.

Method

As illustrated in Figure 1, the user wears the optical seethrough goggles (Juxtopia LLC, Baltimore, MD) and a helmet that supports a compact optical tracking system (Micron tracker, Claron Technology, Toronto, CA). The first step is a registration procedure (Fig 1), in which the surgeon uses a tracked probe to touch markers that were affixed to the patient prior to the preoperative imaging. A paired point rigid registration technique computes the transformation that aligns the preoperative data (i.e., tumor outline) to the real world.

research.image_overlay.1390842397.txt.gz · Last modified: 2019/08/07 12:03 (external edit)




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