System and method for intraoperative guidance of stent...

Details System and method for intraoperative guidance of stent... System and method for intraoperative guidance of stent...

2008-02-15

2011-11-15

Le, Long V. (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S424000, C623S001100

Reexamination Certificate

active

08060186

ABSTRACT:
A method for guiding stent deployment during an endovascular procedure includes providing a virtual stent model of a real stent that specifies a length, diameter, shape, and placement of the real stent. The method further includes projecting the virtual stent model onto a 2-dimensional (2D) DSA image of a target lesion, manipulating a stent deployment mechanism to navigate the stent to the target lesion while simultaneously acquiring real-time 2D fluoroscopic images of the stent navigation, and overlaying each fluoroscopic image on the 2D DSA image having the projected virtual stent model image, where the 2D fluoroscopic images are acquired from a C-arm mounted X-ray apparatus, and updating the projection of the virtual stent model onto the fluoroscopic images whenever a new fluoroscopic image is acquired or whenever the C-arm is moved, where the stent is aligned with the virtual stent model by aligning stent end markers with virtual end markers.

REFERENCES:
patent: 6733489 (2004-05-01), Nutting et al.
patent: 2006/0184066 (2006-08-01), Karmonik et al.
Penney, G., “Registration of Tomographic Images to X-ray Projections for Use in Image Guided Interventions”, Computational Imaging Science Group, Division of Radiological Sciences and Medical Engineering, Guy's, King's and St. Thomas' School of Medicine, King's College London, Dec. 1999.

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