System and method for guiding transcatheter aortic valve implantations based on interventional C-Arm CT imaging

US8494245B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Rui Liao · Princeton Junction, US
• Yefeng Zheng
• Matthias John · Nuremberg, DE
• Alois Nöttling · Pottenstein, DE
• Jan Boese · Eckental, DE
• Uwe Kirschstein · Koblenzer Straße, DE

Key dates

• Filing date: Nov 12, 2010
• Grant date: Jul 23, 2013
• Expiry date: Feb 7, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V2201/031
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for guiding transcatheter aortic valve implantations includes receiving an interventional 3D image of an aortic root reconstructed from a sequence of 2D images acquired from a C-arm computed tomography (CT) system being rotated about a patient through a predetermined number of degrees, segmenting the aortic root and detecting aortic root landmarks in the 3D image, where the aortic root landmarks include three lowest points of aortic root cusps, two coronary artery ostia, and three commissures points where the cusps meet, cropping an area inside the segmented aortic root out of the 3D volume for volume rendering, centering the 3D image on an intersection of two orthogonal planes, each containing the two detected coronary ostia, that are orthogonal to a plane spanned by three lowest points of the aortic root cusps, and volume rendering the 3D cropped aortic root image together with the detected landmarks onto a 2D image.