Retrospective sorting of 4D CT into breathing phases based on geometric analysis of imaging fiducials
US8160675B2 · kind B2 · utility
2Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2007 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Feb 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/412
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A respiratory marker (40, 140, 240, 340, 440) includes an elongated detectable portion (42, 342, 442) that is operatively coupled with respiration of an imaging subject such that the elongated detectable portion moves with the respiration. The elongated detectable portion is arranged to intersect images acquired by an imaging scanner (10) at different times and at different positions along a scanner axis (20), and is detectable as a marker feature in the images. A marker position finder (52, 54) is configured to determine positions of the marker features in the images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.