Patent · US Active

3D printed physical phantom utilized in measuring 3D geometric distortion occurring in MRI and CT images

US10180483B2 · kind B2 · utility

10Cited by

18References

20Claims

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	Apr 23, 2015
Grant date	Jan 15, 2019
Priority date	—
Expiry date	Oct 20, 2037

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.