Patent classifications
A61B6/4291
SYSTEMS AND METHODS FOR CONTROLLING MOTION OF DETECTORS HAVING MOVING DETECTOR HEADS
An imaging system is provided that includes a gantry, at least five detector units mounted to the gantry, a corresponding collimator for each of the detector units, at least one processing unit, and a controller. Each collimator has septa defining plural bores for each pixel of at least some of a plurality of pixels of the detector unit. A corresponding interior septum of the collimator is disposed above an internal portion of a corresponding pixel of the at least some of the plurality of pixels. The at least one processing unit is configured to obtain object information corresponding to the object to be imaged. The controller is configured to control an independent rotational movement of each the detector units used to acquire scanning information by detecting emissions from the object, wherein the controller rotates each of the detector units at a corresponding sweep rate.
RADIATION IMAGE PROCESSING DEVICE, METHOD, AND PROGRAM
When performing processing for eliminating scattered radiation included in radiation transmitted through a subject on a radiation image captured by irradiating the subject with radiation, an imaging condition acquisition unit acquires imaging conditions, and a distance information acquisition unit acquires distance information representing the distance between the subject and a radiation detector. A scattered radiation information acquisition unit acquires scattered radiation component information representing a scattered radiation component of radiation included in the radiation image based on at least the imaging conditions, and a correction unit corrects the scattered radiation component information based on the distance information. A scattered radiation elimination unit performs scattered radiation elimination processing of the radiation image based on the corrected scattered radiation component information.
Radiographic imaging apparatus and method of controlling the same
A radiographic imaging apparatus includes a radiation irradiator configured to irradiate radiation to an object; a radiation detector configured to detect an intensity of the radiation passing through the object; and a loader configured to load the object, and at least one of a movement speed of the loader and a range of radiation irradiation of the radiation irradiator is changed according to a change in the intensity of the radiation, when the change in the intensity of the radiation is greater than or equal to a threshold value.
DEVICE FOR SUSPENDING AN X-RAY GRID, ARRANGEMENT WITH AN X-RAY GRID AND METHOD FOR OPERATING AN X-RAY GRID
A device for suspending an x-ray grid has a first rotating frame which can be rotated about a first axis. The x-ray grid is disposed in or on the rotating frame. Two first flexible hinge elements are connected to the first rotating frame and are aligned along the first axis. The first rotating frame is reversibly rotatable about the first axis. An x-ray arrangement has one or more such suspension devices between an x-ray emitter and an x-ray detector. The articulated flexible elements of the novel device are completely play-free and significantly more cost-effective that separate hinges.
APPARATUS FOR MOVABLY SUSPENDING AN X-RAY GRID, ARRANGEMENT WITH AN X-RAY GRID AND METHOD FOR OPERATING AN X-RAY GRID
An apparatus for movably suspending an x-ray grid. The apparatus has a carrier module, in or on which the x-ray grid is arranged, and a linkage. The linkage is configured to rotate the carrier module about an axis which is vertical to the x-ray grid and/or to translate the carrier module in the plane of the x-ray grid. An x-ray arrangement has an x-ray emitter, an x-ray detector and one or more apparatus for suspending the x-ray grid between the emitter and detector. The apparatus provides for play-free kinematics which is more cost-effective than the use of known precision drives.
SCANNING DIGITAL FLUOROSCOPE
A system for taking fluoroscopic images of large animals having a rotatable plate with a plurality of detectors disposed on the rotatable plate, wherein the detectors are arranged as spokes extending radially outwardly from a central rotational point on the rotatable plate with collimators disposed on the side edges of the spokes. A drive assembly rotates the plate about an axis extending through the central rotational point at a speed such that the duration of successive image frames corresponds to the time taken for each spoke of detectors to move to the position of an adjacent spoke of detectors.
X-RAY PHASE IMAGING SYSTEM
This X-ray phase imaging system includes a plurality of gratings including a first grating that is irradiated with X-rays from an X-ray source and a second grating that is irradiated with X-rays from the first grating. The X-ray phase imaging system includes an imaging unit that optically images a subject and one or both of the first grating and the second grating.
Monochromatic attenuation contrast image generation by using phase contrast CT
The present invention relates to a method and apparatus for X-ray phase contrast imaging. The method comprises the following steps: from the measured phase gradient and overall attenuation information, an electron density is computed; the contribution p.sub.c of the Compton scattering to the overall attenuation is estimated from the electron density; the contribution pp of the photo-electric absorption to the overall attenuation is estimated from the overall attenuation and the contribution p.sub.c; the values p.sub.c and p.sub.p are used to reconstruct a Compton image and a photo-electric image; by linear combination of these two images, a monochromatic image at a desired energy is obtained.
X-ray image detector holder and mounting device and method for commercial x-ray applications
A device for attaching an x-ray image detector holder to a commercial structure such as a pipe so that the modern digital image detector can be used in analysis and inspection. The x-ray image detector holder attach device is constructed to be attached to a structure and can include a flat image detector holder part, the image detector holder part having at least one peripheral slot; a structure contact part constructed to be strapped to a structure to be x-rayed, the structure contact part having a key sized to mate with the peripheral slot, the key having a lock constructed to hold the key in the peripheral slot; the structure contact part can be a means to attach it to the structure to be x-rayed such as a strap or suction cups.
RADIOGRAPHIC IMAGING APPARATUS, IMAGE GENERATION METHOD, RADIOGRAPHIC IMAGING SYSTEM, AND RECORDING MEDIUM
A radiographic imaging apparatus in which a radiation source, a plurality of gratings and a radiation detector are provided side by side in a radiation irradiation axis direction includes a hardware processor. The hardware processor generates a reconstructed image on the basis of a Moire fringe image obtained by performing imaging by irradiating a subject disposed at a position overlapping the radiation irradiation axis direction with radiation by the radiation source, acquires relative position information that is relative positions in two or more dimensions of the subject with respect to the gratings, and associates the reconstructed image with the relative position information.