9 results about "Ray" patented technology

An x-ray optical filter includes at least one x-ray optical mirror configured to receive a plurality of x-rays having a first x-ray spectrum with a first intensity as a function of energy in a predetermined solid angle range and to separate at least some of the received x-rays by multilayer reflection or total external reflection into reflected x-rays and non-reflected x-rays and to form an x-ray beam including at least some of the reflected x-rays and/or at least some of the non-reflected x-rays. The x-ray beam has a second x-ray spectrum with a second intensity as a function of energy in the solid angle range, the second intensity greater than or equal to 50% of the first intensity across a first continuous energy range at least 3 keV wide, the second intensity less than or equal to 10% of the first intensity across a second continuous energy range at least 100 eV wide.

The invention discloses a first arrival chromatography near-surface modeling effective model depth control method and system. The method comprises the following steps: obtaining ray maximum depth andoptimization speed models of the first iteration and the second iteration; setting a threshold value, and carrying out the Nth iteration: 1, carrying out the preprocessing of the maximum depth of theray of the (N-2) th iteration and the maximum depth of the ray of the (N-1) th iteration; 2, calculating a depth difference; 3, calculating the effective model depth of the Nth iteration; 4, obtainingan optimization speed model; 5, whether N is equal to a threshold value or not is judged, if yes, a near-surface velocity model is obtained, and if not, the step 6 is executed; and 6, optimizing whether the speed model reaches a preset target or not, if so, obtaining a near-surface speed model, and if not, carrying out (N + 1) th iteration. According to the method, the effective model depth of the iteration is determined through the maximum ray depth of the latest secondary iteration in the first arrival chromatography iteration process, and the speed units outside the effective model depth are excluded, so that the forward modeling efficiency is improved.

A radioscopic apparatus includes a controller configured or programmed to, when imaging information using the first radiation source is selected, perform control of retracting a second detector to a position in one of longitudinal ends of a table, at which the second detector does not block radiation emitted from a first radiation source, according to information about a region to be imaged of a subject included in the selected imaging information.

The invention discloses an intelligent light restraining device and an X-ray imaging system comprising the same. The intelligent light restrain device comprises a first plate element, a second plate element, a third plate element and a fourth plate element, wherein the first plate element and the second plate element are positioned on a first plane; the third plate element and the fourth plate element are positioned on a second plane; the first plane and the second plane are two different planes opposite to the X-ray emergent direction of an X-ray source, so that the intelligent light restraining device can control the X-ray emergent area of the X-ray source; and inclined surfaces formed by the first plate element, the second plate element, the third plate element and the fourth plate element can cause at least parts of X-rays irradiated onto the own plate surfaces to be reflected along the direction opposite to an incident direction. According to the technical scheme provided by the invention, an imaging area can be more accurately controlled, ray particles in a non-imaging area can be vertically irradiated onto the surface of a shielding device, scattering of the X-ray particles is effectively prevented, and the intelligent light restraining device has a simple structure and is safe and stable.