Method and apparatus for reducing artifacts in images reconstructed from image data acquired by a computed tomography system
US6353653B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for use with a computed tomography (CT) system that collects CT radiograph data for every view of the CT gantry so that a data set corresponding to all views of the gantry is available for use in reconstructing an image of a patient's heart and coronary vasculature. For each view of the gantry, the CT radiograph data associated with the view is collected at different instants in time with respect to the period of the cardiac cycle in each revolution of the gantry. Prior to data acquisition, the patient's heart rate is measured and the period of the gantry is set such that data is acquired at a different time with respect to the period of the cardiac cycle for every view of the gantry and for each revolution of the gantry. Therefore, for each revolution of the gantry and for each view of the gantry, the instant in time in the period of the cardiac cycle at which any given detector element of the detector array is sampled will be different from the instant in time in the period of the cardiac cycle at which the same detector element was sampled in the previous revolution. After all of the CT radiograph data is collected, the radiographs are processed by an inte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.