Patent · US Active

2D/3D registration

US10062174B2 · kind B2 · utility

0Cited by

0References

30Claims

0Family size

Assignee

Siemens Healthcare Limited · DE

Inventors

Roman Schaffert · Erlangen, DE
Jian Wang · Erlangen, DE
Anja Borsdorf · Höchstadt an der Aisch, DE

Key dates

Filing date	Feb 18, 2017
Grant date	Aug 28, 2018
Priority date	—
Expiry date	Feb 18, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30008
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method includes, following specification of an initial transformation as a test transformation that is to be optimized, determining a 2D gradient x-ray image and a 3D gradient dataset of the image dataset, carrying out, for each image element of the gradient comparison image, a check for selection as a contour point, and determining an environment best corresponding to a local environment of the contour point and extending around a comparison point in the gradient x-ray image for all contour points in the at least one gradient comparison image. Local 2D displacement information is determined by comparing the contour points with the associated comparison points, and motion parameters of a 3D motion model describing a movement of the target region between the acquisition of the image dataset and the x-ray image are determined from the displacement information and a registration transformation describing the registration.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.