Method for acquiring a 3D image dataset associated with an image object for reducing beam artifacts
US8824765B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Aug 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/432
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for acquiring a 3D image dataset is proposed. A 3D X-ray image dataset of an image object is acquired during scanning of a partial circle by X-ray radiation source and X-ray radiation detector. A first and a second 3D image datasets are calculated from the acquired image dataset. Redundancies are eliminated by averaging the first and second 3D image datasets. A filtering that is antisymmetric in respect of a center of symmetry is performed in respect of the 2D image datasets in calculating the second 3D image dataset. Said filtering has a row-by-row Hilbert transform. Suitable weights can be specified based on an axis defined in space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.