Patent · US Active

Method and apparatus for measuring 3D geometric distortion in MRI and CT images with a 3D physical phantom

US10557911B2 · kind B2 · utility

5Cited by

18References

7Claims

0Family size

Inventors

David W. Holdsworth · London, CA
Matthew G. Teeter · London, CA
Jacques S. Milner · London, CA
Steven I. Pollmann · London, CA
Maria Drangova · London, CA

Key dates

Filing date	Dec 6, 2018
Grant date	Feb 11, 2020
Priority date	—
Expiry date	Dec 6, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/565
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

3D printing in MRI-compatible plastic resin has been used to fabricate and implement a geometric distortion phantom for MRI and CT imaging. The sparse grid structure provides a rigid and accurate phantom with identifiable intersections that are larger than the supporting members, which produces images that are amenable to fully automated quantitative analysis using morphometric erosion, greyscale segmentation and centroiding. This approach produces a 3D vector map of geometric distortion that is useful in clinical applications where geometric accuracy is important, either in routine quality assurance or as a component of distortion correction utilities.

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