Patent Number: 
Section: claims

1. A detector system for x-ray imaging, said detector system comprising:a detector having a plurality of adjacent edge-on detector modules, wherein:each of said edge-on detector modules comprises a first edge that is adapted to be oriented towards an x-ray source and a front-side running essentially parallel to the direction of incoming x-rays, said front-side comprising at least one charge collecting electrode and routing traces connecting the at least one charge collecting electrode with front-end electronics; andat least a subset of said plurality of adjacent edge-on detector modules being pairwise arranged, front-side to front-side, whereby a front-side to front-side gap is defined between the front-sides of said pairwise arranged edge-on detector modules; and whereineach said pairwise arranged edge-on detector modules include an anti-scatter collimator arranged in the x-ray path between said x-ray source and said edge-on detector modules and overlapping said front-side to front-side gap, said anti-scatter collimator being arranged to protect the front-side surface of both detector modules in each said pairwise arranged edge-on detector module from damaging x-rays, andeach pair of said pairwise arranged edge-on detector modules further include an anti-scatter foil located in said front-side to front-side gap between the front-sides of said pairwise arranged edge-on detector modules. 2. The detector system according to claim 1, wherein said anti-scatter collimator comprises a collimator of a high Z material. 3. The detector system according to claim 2, wherein said front-side to front-side gap comprises an anti-scatter foil. 4. The detector system according to claim 2, wherein said anti-scatter foil comprises a high Z anti-scatter foil. 5. The detector system according to claim 2, wherein the backside of at least one edge-on detector module of said pairwise arranged edge-on detector modules is arranged to face the backside of a corresponding edge-on detector module in such a way that a back-side to back-side gap is formed between said edge-on detector module and said corresponding edge-on detector module. 6. The detector system according to claim 1, wherein said anti-scatter foil is attached to the front-side surfaces of both edge-on detector modules of each pair of said pairwise arranged edge-on detector modules. 7. The detector system according to claim 6, wherein said anti-scatter foil comprises a high Z anti-scatter foil. 8. The detector system according to claim 1, wherein said anti-scatter foil comprises a high Z anti-scatter foil. 9. The detector system according to claim 1, wherein the front side volume protected by said anti-scatter collimator exceeds 1% of the total detector volume. 10. The detector system according to claim 1, wherein the backside of at least one edge-on detector module of said pairwise arranged edge-on detector modules is arranged to face the backside of a corresponding edge-on detector module in such a way that a back-side to back-side gap is formed between said edge-on detector module and said corresponding edge-on detector module. 11. The detector system according to claim 10, wherein said back-side to back-side gap comprises an attenuating material. 12. The detector system according to claim 11, wherein said attenuating material comprises a material having similar attenuation characteristics as the semi-conducting material used for the detector modules. 13. The detector system according to claim 1, wherein said edge-on detector modules comprises edge-on detector modules of a semi-conducting material. 14. The detector system according to claim 13, wherein said semi-conducting material comprises silicon. 15. The detector system according to claim 14, wherein said attenuating material comprises silicone. 16. The detector system according to claim 1, wherein the detector system is arranged to provide improved charge collection. 17. The detector system according to claim 1, wherein,each said anti-scatter collimator has a front face portion arranged facing the directly incoming x-rays and a rear face portion facing front sides of the pairwise arranged edge-on detector modules and the said front-side to front-side gap therebetween,a width of the rear face portion being greater than a width of said front-side to front-side gap adjacent said rear face portion, the rear face portion covering both said front-side to front-side gap and a portion of front sides of each of the pairwise arranged edge-on detector modules, the rear face portion thereby covering and protecting the front side volume of the pairwise arranged edge-on detector modules against the directly incoming x-rays.