System and method for intraoperative guidance of stent placement during endovascular interventions

US8060186B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ashraf Mohamed · Torrance, US
• Chenyang Xu · Allentown, US
• Frank Sauer · Princeton, US
• Marcus Pfister · Bubenreuth, DE
• Andrew F. Hall · Holden, US
• Klaus Klingenbeck-Regn · Nuremberg, DE

Key dates

• Filing date: Feb 15, 2008
• Grant date: Nov 15, 2011
• Expiry date: Jun 13, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30204
• WIPO field: Medical technology
• WIPO sector: Instruments

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.