Patent Number: 
Section: claims

1. A radiology apparatus comprising:means for emitting radiation;means for filtering the emitted radiation being located in an intermediate position between the means for emitting radiation and a body to be subjected to the emitted;means for controlling an emission of the means for emitting radiation for a duration of a radiology exposure; andmeans for moving the means for filtering for the duration of the exposure;wherein in response to the means for filtering having a defect, the means for moving causes the means for filtering to shift in a manner that reduces the intensity of an image artifact arising from the defect in the means for filtering. 2. The apparatus according to claim 1 wherein the means for filtering is a plate. 3. The apparatus according to claim 1 wherein the means for moving the filter comprise means for causing the rate of movement to be linear during the exposure. 4. The apparatus according to claim 2 wherein the means for moving the filter comprise means for causing the rate of movement to be linear during the exposure. 5. The apparatus according to claim 1 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 90° relative to alignment of elongated patterns present on the means for filtering. 6. The apparatus according to claim 2 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 90° relative to alignment of elongated patterns present on the means for filtering. 7. The apparatus according to claim 3 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 90° relative to alignment of elongated patterns present on the means for filtering. 8. The apparatus according to claim 4 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 90° relative to alignment of elongated patterns present on the means for filtering. 9. The apparatus according to claim 1 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 45° relative to alignment of elongated patterns present on the means for filtering. 10. The apparatus according to claim 2 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 45° relative to alignment of elongated patterns present on the means for filtering. 11. The apparatus according to claim 3 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 45° relative to alignment of elongated patterns present on the means for filtering. 12. The apparatus according to claim 4 wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at approximately 45° relative to alignment of elongated patterns present on the means for filtering. 13. The apparatus according to claim 5 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 14. The apparatus according to claim 6 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 15. The apparatus according to claim 7 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 16. The apparatus according to claim 8 wherein;the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 17. The apparatus according to claim 9 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 18. The apparatus according to claim 10 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 19. The apparatus according to claim 11 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 20. The apparatus according to claim 12 wherein:the elongated patterns comprise consecutive elongated patterns having a defined sine variation with a spatial wavelength equal to the distance between two consecutive elongated patterns; andthe means for moving comprise means for causing the movement of the means for filtering to have a length greater than the spatial wavelength of the elongated patterns. 21. The apparatus according to claim 1 wherein the means for moving the means for filtering comprise means for causing the movement of the means for filtering to have a length greater than 300 micrometers. 22. The apparatus according to claim 1 wherein the movement of the means for filtering is controlled with respect to a pattern of defects on the means for filtering. 23. The apparatus according to claim 22 wherein the pattern approximates a sine wave. 24. The apparatus according to claim 1 wherein the means for moving the means for filtering comprise micrometers or piezoelectric elements. 25. The apparatus according to claim 1 wherein the means for moving the means for filtering comprise means for positioning the means for filtering before the means for emitting radiation. 26. The apparatus according to claim 25 wherein the means for positioning comprises a turntable. 27. The apparatus according to claim 1 wherein the means for filtering is made of rhodium, molybdenum, aluminium, copper, gold or silver. 28. The apparatus according to claim 1 wherein the means for moving the means for filtering comprise means for steering the movement of the means for filtering. 29. The apparatus according to claim 1, wherein:the apparatus is a mammography apparatus. 30. The apparatus according to claim 1, wherein the means for moving comprise means for causing the movement of the means for filtering to be oriented at an angle equal to or greater than 45° and equal to or less than 90° relative to alignment of elongated patterns present on the means for filtering. 31. The apparatus according to claim 26, wherein the means for moving comprises means for continually moving the turntable during the exposure. 32. An installation comprising:means for filtering emitted radiation;means for controlling an emission of the means for emitting radiation for a duration of a radiology exposure; andmeans for moving the means for filtering for the duration of the exposure;wherein in response to the means for filtering having a defect, the means for moving causes the means for filtering to shift in a manner that reduces the intensity of an image artifact arising from the defect in the means for filtering. 33. The installation according to claim 32 wherein the movement of the means for filtering is controlled with respect to a pattern of defects on the means for filtering. 34. The installation according to claim 32 wherein the movement of the means for filtering is oriented with respect to a pattern of defects on the means for filtering. 35. The installation according to claim 33 wherein the movement of the means for filtering is oriented with respect to a pattern of defects on the means for filtering. 36. The installation according to claim 32, wherein:the installation comprises a mammography apparatus.