Patent application number | Description | Published |
20100239072 | COLLIMATOR UNIT, RADIATION DETECTING DEVICE, AND RADIODIAGNOSTIC SYSTEM - A pair of holding plates formed with a plurality of grooves each wider than the thickness of each collimator plate are disposed in parallel so that the respective surfaces formed with the grooves confront each other. Urging members are disposed on the holding members. When the urging members slide in the arranged direction of the grooves along the grooves-formed surfaces of the holding members, the urging members urge individual collimator plates inserted in the grooves toward side walls of the grooves. The collimator plates are inserted into the grooves, then the urging members are slid and held in that slide position to urge individual collimator plates into close contact with side walls of the grooves. | 09-23-2010 |
20110096895 | COLLIMATOR MODULE, X-RAY DETECTOR, X-RAY CT DEVICE, AND ASSEMBLING METHOD OF COLLIMATOR MODULE - A collimator module ( | 04-28-2011 |
20120219107 | TWO-DIMENSIONAL COLLIMATOR MODULE, X-RAY DETECTOR, X-RAY CT APPARATUS, AND METHOD FOR ASSEMBLING TWO-DIMENSIONAL COLLIMATOR MODULE - A two-dimensional collimator module is provided. The two-dimensional collimator module includes first collimator plates arranged in a channel direction, second collimator plates arranged in a slice direction and combined with the first collimator plates to form a lattice, and a first block and a second block that hold the first collimator plates, wherein each of the first collimator plates is formed with slits, each of the second collimator plates is inserted through an associated row of the slits, first plate surfaces of the second collimator plates in the slice direction abut only first wall surfaces of first and second wall surfaces of the slits in the slice direction in a first set of the first collimator plates, and second plate surfaces of the second collimator plates opposite to the first plate surfaces abut only the second wall surfaces of the slits in a second set of first collimator plates. | 08-30-2012 |
20130163715 | RADIATION TOMOGRAPHY SYSTEM, RADIATION DETECTING DEVICE, AND SPATIAL RESOLUTION CHANGING METHOD FOR RADIATION TOMOGRAPHY - A radiation tomography system is provided. The radiation tomography system includes a radiation source configured to rotate around a subject and apply radiation to the subject, a plurality of radiation detecting elements disposed opposite the radiation source, a plurality of collimator plates partitioning the radiation detecting elements in a channel direction, the collimator plates erected such that plate surfaces of each of the plurality of collimator plates extend along a direction of radiation from the radiation source, and an aperture-width changing unit configured to change a width of each aperture formed by the plurality of collimator plates by moving a plurality of radiation absorbing members along respective end sides of the collimator plates close to the radiation source, the plurality of radiation absorbing members moveable between a first position at which the end sides are covered and a second position at which the end sides are exposed. | 06-27-2013 |
20130223588 | RADIATION IMAGING APPARATUS, RADIATION DETECTING APPARATUS AND RADIATION FOCAL-POINT MOVEMENT DETECTING METHOD - A radiation imaging apparatus is provided. The radiation imaging apparatus includes a radiation source configured to emit radiation from a first focal point, a plurality of radiation detecting elements disposed opposite to the radiation source and arranged in a channel direction, a plurality of collimator plates provided along the channel direction so as to separate the radiation detecting elements, the collimator plates including radiation absorption members at surfaces of at least one first collimator plate located on a first end side and at least one second collimator plate located on a second end side such that radiation shielding effects of the first and second collimator plates become substantially equivalent when the surfaces of the first and second collimator plates are located along a radial direction from a second focal point, and a data acquisition unit configured to acquire radiation projection data from the radiation detecting elements. | 08-29-2013 |
20130322603 | COLLIMATOR PLATE, COLLIMATOR MODULE, RADIATION DETECTING DEVICE, RADIOGRAPHY APPARATUS AND ASSEMBLING METHOD OF COLLIMATOR MODULE - A method is provided for assembling a collimator module including a plurality of first collimator plates arrayed in a first direction, each first collimator plate having a plurality of slots formed on a plate surface, and a plurality of second collimator plates arrayed in a second direction orthogonal to the first direction, wherein each second collimator plate penetrates respective slots along the first direction so as to form a lattice-shape. The method includes positioning the plurality of first collimator plates by moving a first collimator plate in one direction along the second direction, so that a side wall of a first cutout formed on an edge of a radiation incident side or a radiation output side of the first collimator plate contacts a member extending in the first direction. | 12-05-2013 |
20140001371 | RADIATION DETECTION DEVICE AND RADIATION TOMOGRAPHIC APPARATUS, AND METHOD FOR ASSEMBLING RADIATION DETECTION DEVICE | 01-02-2014 |
20140016738 | RADIATION TOMOGRAPHY SYSTEM, RADIATION DETECTING DEVICE, AND SPATIAL RESOLUTION CHANGING METHOD FOR RADIATION TOMOGRAPHY - A radiation tomography system is provided. The radiation tomography system includes a radiation source configured to rotate around a subject and apply radiation to the subject, a plurality of radiation detecting elements disposed opposite the radiation source, a plurality of collimator plates partitioning the radiation detecting elements in a channel direction, the collimator plates erected such that plate surfaces of each of the plurality of collimator plates extend along a direction of radiation from the radiation source, and an aperture-width changing unit configured to change a width of each aperture formed by the plurality of collimator plates by moving a plurality of radiation absorbing members along respective end sides of the collimator plates close to the radiation source, the plurality of radiation absorbing members moveable between a first position at which the end sides are covered and a second position at which the end sides are exposed. | 01-16-2014 |
20140153691 | RADIATION FOCAL POSITION DETECTING METHOD, RADIATION DETECTING APPARATUS AND RADIATION TOMOGRAPHIC IMAGING APPARATUS - A radiation focal position detecting method for detecting a positional displacement of a focal point of a radiation source in a radiation tomographic imaging apparatus is provided. The method includes providing a radiation absorber that covers parts of first and second detecting element regions, the parts lying on mutually adjoining sides of the first and second detecting element regions in a radiation detector including a plurality of detecting elements arranged in channel and slice directions, and specifying, based on intensities of radiation detected by the detecting elements in the first and second detecting element regions, a position of the focal point or an amount of movement of the focal point from a reference position. | 06-05-2014 |
20140362978 | COLLIMATOR PLATE, COLLIMATOR MODULE, RADIATION DETECTING DEVICE, RADIOGRAPHY APPARATUS AND ASSEMBLING METHOD OF COLLIMATOR MODULE - A method is provided for assembling a collimator module including a plurality of first collimator plates arrayed in a first direction, each first collimator plate having a plurality of slots formed on a plate surface, and a plurality of second collimator plates arrayed in a second direction orthogonal to the first direction, wherein each second collimator plate penetrates respective slots along the first direction so as to form a lattice-shape. The method includes positioning the plurality of first collimator plates by moving a first collimator plate in one direction along the second direction, so that a side wall of a first cutout formed on an edge of a radiation incident side or a radiation output side of the first collimator plate contacts a member extending in the first direction. | 12-11-2014 |