06501848 is referenced by 146 patents.

A method for in-room computer reconstruction of a three-dimensional (3-D) coronary vascular tree from routine biplane angiograms acquired at arbitrary angles and without using calibration objects. The method includes seven major steps: (1) acquisition of two standard angiogram sequences by use of a single-plane or biplane imaging system, (2) identification of 2-D coronary vascular trees and feature extractions including bifurcation points, directional vectors, vessel centerlines, and construction of vessel hierarchy in the two images, (3) determination of transformation in terms of a rotation matrix R and a translation vector {right arrow over (t)} based on the extracted vessel bifurcation points and directional vectors, (4) establishment of vessel centerline correspondence, (5) calculation of the skeleton of 3-D coronary vascular trees, (6) rendering of 3-D coronary vascular tree with associated gantry angulation, and (7) calculation of optimal view(s) and 3-D QCA as quantitative measures associated with the selected vascular segment(s) of interest. The calculation of optimal views includes determination of 2-D projections of the reconstructed 3-D vascular tree so as to minimize foreshortening of a selected vascular segment, overlap of a selected vascular segment or both overlap and foreshortening of a selected arterial segment.

Title
Method and apparatus for three-dimensional reconstruction of coronary vessels from angiographic images and analytical techniques applied thereto
Application Number
9/444138
Publication Number
6501848 (B1)
Application Date
November 20, 1999
Publication Date
December 31, 2002
Inventor
Shiuh Yung James Chen
Denver
CO, US
John Carroll
Littleton
CO, US
Agent
Lathrop & Gage L C
US
Agent
Daniel N Fishman
US
Assignee
University Technology Corporation
CO, US
IPC
G06K 9/00
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