| Patent application number | Description | Published |
|---|
| 20080205727 | Computed Tomography Method With Helical Relative Movement And Conical Beam Bundle - The invention relates to a computed tomography method in which a periodically moving object is irradiated by a conical beam bundle. An nPi-relative movement is generated between a radiation source, which generates the conical beam bundle, and the object. During the nPi-relative movement, measured values are acquired, which depend on the intensity in the beam bundle on the other side of the object and from these measured values filter values are determined, which are divided into different groups. The filter values of at least one group are weighted in dependence on the movement of the object, wherein, when filter values of several groups are weighted, filter values of different groups are weighted differently in dependence on the movement of the object. Finally, a CT image of the object is reconstructed from the filter values. | 08-28-2008 |
| 20080260093 | Computer Tomography Apparatus with Multiple X-Ray Radiation Sources - A computer tomography apparatus ( | 10-23-2008 |
| 20090208077 | IMAGING SYSTEM - The present invention relates to an imaging system for imaging a field of interest, in particular to a computed tomography system. The imaging system comprises an irradiation unit ( | 08-20-2009 |
| 20090238328 | X-RAY TUBE WITH OSCILLATING ANODE - It is described an X-ray tube ( | 09-24-2009 |
| 20090262885 | CONE BEAM COMPUTED TOMOGRAPHY WITH MULTIPLE PARTIAL SCANNING TRAJECTORIES - A computer tomography apparatus ( | 10-22-2009 |
| 20090268863 | RECONSTRUCTION METHOD FOR HELICAL CONE-BEAM CT - The invention relates to a method and a system for the reconstruction of an object function (f(x)) based on projections acquired during the motion of a radiation source on a helical trajectory ( | 10-29-2009 |
| 20090310825 | IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST COMPRISING A MOVING OBJECT - The invention relates to an imaging system for imaging a region of interest comprising a moving object, which moves less in small motion phases than in large motion phases. Detection values are provided and a small motion determination unit ( | 12-17-2009 |
| 20100034342 | METHOD AND APPARATUS FOR CORRECTING ARTIFACTS IN CIRCULAR CT SCANS - A scanning method and apparatus useful for correcting artifacts which may appear in a primary short circular CT scan are provided. A secondary helical scan performed on a stationary subject, or a secondary circular scan, may be used to correct for artifacts. The secondary scan may be performed with a smaller radiation dosage than the primary circular CT scan. | 02-11-2010 |
| 20100232663 | COMPUTED TOMOGRAPHY RECONSTRUCTION FOR TWO TILTED CIRCLES - A computed tomography apparatus ( | 09-16-2010 |
| 20100246888 | IMAGING APPARATUS, IMAGING METHOD AND COMPUTER PROGRAM FOR DETERMINING AN IMAGE OF A REGION OF INTEREST - The present invention relates to an imaging apparatus for determining an image of a region of interest, wherein a motion generation unit ( | 09-30-2010 |
| 20100296624 | HIGH-FREQUENCY SADDLE-TRAJECTORY FOR AXIAL CARDIAC CT - If, in cardiac CT, the time window becomes shorter than the time required for a complete rotation of the gantry, the volume that can be reconstructed becomes small due to the non-existence of related pi-lines. According to an exemplary embodiment of the present invention, an examination apparatus is provided which generates a radiation beam oscillating in z-direction with an oscillation frequency higher than the rotational frequency of the source. This may provide for an exact image reconstruction of large volumes. | 11-25-2010 |
| 20110058644 | SOURCE AND/OR DETECTOR POSITIONING SYSTEM - A medical imaging system includes a generally stationary gantry ( | 03-10-2011 |
