KEYWORDS: Video, Ultrasonography, Image-guided intervention, Medical imaging, 3D video streaming, Computed tomography, 3D image processing, Imaging systems, Visualization, Surgery
The image-guided surgery toolkit (IGSTK) is an open source C++ library that provides the basic components required
for developing image-guided surgery applications. While the initial version of the toolkit has been released, some
additional functionalities are required for certain applications. With increasing demand for real-time intraoperative image
data in image-guided surgery systems, we are adding a video grabber component to IGSTK to access intraoperative
imaging data such as video streams. Intraoperative data could be acquired from real-time imaging modalities such as
ultrasound or endoscopic cameras. The acquired image could be displayed as a single slice in a 2D window or integrated
in a 3D scene. For accurate display of the intraoperative image relative to the patient's preoperative image, proper
interaction and synchronization with IGSTK's tracker and other components is necessary. Several issues must be
considered during the design phase: 1) Functions of the video grabber component 2) Interaction of the video grabber
component with existing and future IGSTK components; and 3) Layout of the state machine in the video grabber
component. This paper describes the video grabber component design and presents example applications using the video
grabber component.
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