44results about "Diaphragms for radiation diagnostics" patented technology

One exemplary adjustable collimator includes a housing having an aperture through which radiation is directed from an entrance to an exit of the housing, a first shutter 206 and a second shutter 208 within the housing, a first link 222 coupled to the first shutter, and a first yoke 218 coupled to the housing at a pivot point (at 220) and configured to pivot relative to the housing. The first yoke is configured to reduce the effective width of the aperture by moving the first shutter toward the second shutter via the first link when the first yoke is rotated in a first direction (here, clockwise).

A modular x-ray imaging system includes an application specific module, a base unit in communication with the application specific module, and a mechanical support configured to support the x-ray application specific module. The base unit and application specific module are configured to communicate by wired and / or wireless communication.

An X-ray imaging device is disclosed. The X-ray imaging device of the present disclosure may comprise: a fixed frame; an X-ray generator movably coupled to the fixed frame; a moving assembly for moving the X-ray generator in the horizontal direction; a detector to which the X-ray generator is directed; and a collimator which is disposed between the X-ray generator and the detector, and which has a hole through which X-rays of the X-ray generator pass.

The invention concerns an apparatus comprising a collimator configured for collimate electromagnetic radiation emitted from an X-ray source, a sensor configured for acquiring data of an anatomy of a patient, and a processing unit. The processing unit is configured to calculate an optimal collimation position of the collimator based on the acquired data of the sensor, determine a movement of the collimator based on the calculated optimal collimation position, wherein the movement of the collimator comprises a rotation of the collimator around a central axis of the collimator. The invention further concerns an X-ray system comprising the apparatus and a method for moving a collimator for collimate electromagnetic radiation emitted form an X-ray source.

The present invention provides a slit X-ray based scanning imaging system and method. The scanning imaging system is initialized by a system initialization module; a position control module controls X-rays emitted by a ray emission window at any position to be exactly and completely received by a preset slit region of interest; an emission module is configured for emitting slit X-rays; and an imaging module is configured for acquiring an image in which the ray successively passes through an object to be imaged, an image reconstruction module, and the reconstruction of an object to be imaged to form a complete image.

Method and system for generating panoramic radiographic images by merging contributions from panoramic images obtained with respect to a plurality of layers, wherein the method provides for performing a so-called Multipan image acquisition and for identifying the image contributions of the various panoramic images that present the best focus of details reproduced therein and for combining said contributions of said images into a fused panoramic image by applying a wavelet decomposition transform to said images for identifying said contributions of said images that represent image details with the best focus and reconstructing from these the fused image by applying the inverse wavelet transform. According to an advantageous variant, the method provides for a step of aligning the horizontal magnification of the panoramic images prior to applying the wavelet transform for decomposition and reconstruction. The invention also relates to a system for implementing said method, comprising a radiographic device and a processing unit in which a program is loaded and from which said program is executable, said program comprising instructions for the processor of said processing unit such that, when said instructions are executed, the processing unit is capable of performing the steps of the method that is the subject of the present invention.

The invention relates to an X-ray device comprising an X-ray source configured for generating X-rays, further comprising an X-ray detector, and further comprising an X-ray reflection unit, wherein the X-ray reflection unit is configured to reflect X-rays generated by the X-ray source such that the reflected X-rays strike the X-ray detector. In particular, the X-ray detector is configured for detecting the X-rays. The invention further relates to a method for operating the X-ray device. The X-ray device according to the invention allows, on the one hand, the space available above a patient to be increased. Furthermore, by focusing using the X-ray reflection unit, the power of the X-ray source can be increased while maintaining the same spatial resolution, or, conversely, the spatial resolution can be improved while maintaining the same power of the X-ray source.

An X-ray imaging system using multiple pulsed X-ray sources to perform highly efficient and ultrafast 3D radiography is presented. There are multiple pulsed X-ray sources mounted on a structure in motion to form an array of sources. The multiple X-ray sources move simultaneously relative to an object on a pre-defined arc track at a constant speed as a group. Electron beam inside each individual X-ray tube is deflected by magnetic or electrical field to move focal spot a small distance. When focal spot of an X-ray tube beam has a speed that is equal to group speed but with opposite moving direction, the X-ray source and X-ray flat panel detector are activated through an external exposure control unit so that source tube stay momentarily standstill equivalently. 3D scan can cover much wider sweep angle in much shorter time and image analysis can also be done in real-time.

This prevents DXA imaging in unsuitable conditions, thereby preventing unnecessary radiation exposure to the subject. [Solution] The X-ray imaging system (radiography system 100) is an X-ray imaging system capable of both dual-energy X-ray absorption spectroscopy and general radiography, comprising: an X-ray irradiation device (radiation generator 1) capable of individually irradiating multiple X-rays of different energies; a portable X-ray detector (radiation detector 2) that captures X-ray images based on the X-rays irradiated by the X-ray irradiation device; and an X-ray imaging control device (console 3) that controls the capture of X-ray images by the X-ray detector. The X-ray imaging control device (console 3) comprises a discrimination unit (control unit 31) that determines whether the type of X-ray detector is suitable for X-ray imaging by dual-energy X-ray absorption spectroscopy, and a notification unit (display unit 34) that provides notifications based on the discrimination result of the discrimination unit.

The present disclosure relates to a device for radiological diagnosis and treatment. The device for radiological diagnosis and treatment, according to an embodiment of the present disclosure, comprises: a body unit; a gantry capable of rotating with respect to the body unit; a treatment table on which a subject is placed; a radiation unit mounted on the gantry and configured to irradiate the subject; an image detector disposed facing the radiation unit with the treatment table interposed therebetween and configured to detect the radiation emitted from the radiation unit; and a control device. The radiation unit includes a multi-leaf collimator for adjusting the distribution of a radiation beam by means of a plurality of shielding leaves. In addition, the control device obtains a CT image by controlling the multi-leaf collimator to emit radiation in a line and controlling the gantry such that the radiation unit rotates around the subject on the treatment table.

An X-ray imaging apparatus and a control method thereof set various types of parameters related to X-ray imaging including an X-ray radiation region using a camera image and automatically controls X-ray imaging. An X-ray imaging apparatus includes a capturing unit that captures a camera image, an X-ray source on which a collimator that adjusts an X-ray radiation region is mounted, a storage unit that maps and stores an X-ray imaging region for each of a plurality of X-ray imaging protocols, an input unit that receives a selection of one of the plurality of X-ray imaging protocols, and a control unit that extracts an X-ray imaging region mapped with the selected X-ray imaging protocol from the camera image and controls the collimator so that the X-ray radiation region corresponds to the extracted X-ray imaging region.

A mechanism for controlling the operation of a CT scanner during a scanning procedure. A radiation outputting system is configured to output radiation during an imaging phase of the scanning procedure. The subject support (patient table) of the CT scanner is controlled to move linearly, e.g. according to some predetermined linear pattern, during this imaging phase. The linear movement of the subject support includes at least one acceleration and / or deceleration phase. At least a beam width of radiation output by the CT scanner is controlled throughout the imaging phase responsive to the speed of the subject support.

A radiation detector head assembly includes a detector column including a detector having a first surface and a second surface opposite the first surface. The detector column includes a first collimator disposed over the first surface of the detector and a second collimator disposed over the second surface of the detector. The detector column includes a first radiation shield disposed over the first collimator. The detector column includes a second radiation shield disposed over the second collimator. The detector column includes a gasket disposed between a horizontal interface between the first and second radiation shields.

An X-ray imaging system using multiple pulsed-actuated X-ray sources in motion is presented to perform highly efficient and ultra-fast 3D X-ray imaging using an X-ray flexible curved panel detector. There are multiple pulsed-actuated X-ray sources mounted on a moving structure to form an array of sources. The sources move simultaneously relative to the subject on a predefined arcuate track at a constant speed as a group. Each individual X-ray source can also move around a stationary X-ray source position at a small distance. The individual sources and detectors are actuated when the individual X-ray sources have a speed that is equal to the group speed but in the opposite direction of movement. This allows the sources to remain relatively stationary during actuation. This operation results in a reduction in the source travel distance for each individual source. 3D X-ray imaging image data can be acquired at a much wider sweep angle in a much shorter time, and image analysis can also be performed in real time.

An X-ray irradiation apparatus (100) comprises an X-ray source device (110) for creating X-rays (2) with a polychromatic spectrum and an X-ray optic device (120) with a beam axis (3) that is longitudinal, wherein the X-ray optic device (120) comprises a reflector device (121) that is polycrystalline having a reflector geometry, a reflector mosaicity and a reflector thickness and the reflector device (121) is arranged for receiving a portion of the X-rays (2) within an acceptance angle of the reflector device (121) and for creating an X-ray beam (4) by Bragg reflection, which is directed along the beam axis (3) towards a focal position thereof and has a spectral distribution determined by the polychromatic spectrum of the X-rays (2), the reflector geometry, the reflector mosaicity and the reflector thickness, and wherein the X-ray irradiation apparatus (100) further comprises a spectral filter aperture device (122) that is arranged downstream from the reflector device (121) for creating a filter gap (123) transmitting a first spectral portion (4A) of the spectral distribution of the X-ray beam (4) and blocking a second spectral portion (4B) and a third spectral portion (4C) of this spectral distribution, wherein the first spectral portion (4A) has higher energies than the second spectral portion (4B) and lower energies than the third spectral portion (4C), wherein the reflector device (121) has an acceptance solid-angle of at least 100 micro-steradian, and wherein the reflector geometry, the reflector mosaicity, the reflector thickness and the acceptance angle of the reflector device (121) are selected such that simultaneously a radiation flux in the first spectral portion (4A) is at least 1% of an incoming flux of the same spectral portion of the X-rays (2) received by the reflector device (121) with a peak reflectivity of at least 1%, the first spectral portion (4A) has a spectral bandwidth of at most 15%, the second and third spectral portions (4B, 4C) have a flux reduced by at least three orders of magnitude compared with the flux in the first spectral portion (4A), and the X-ray beam (4) has a focal spot size of less than 1.5 mm in both transverse dimensions relative to the longitudinal beam axis. Furthermore, an X-ray fluorescence imaging apparatus (200) and a method of using the X-ray irradiation apparatus (100) are described.

Some embodiments include an accessory rail configured to be mounted to an x-ray apparatus, the accessory rail comprising at least one camera. The accessory rail may be configured to be mounted on a collimator of the x-ray apparatus. The collimator shapes the x-ray beam emitted from the x-ray apparatus. The at least one camera may be housed within the accessory rail.

A system and method for improved image acquisition of multiple pulsed X-ray source-in-motion tomosynthesis imaging apparatus by generating the electrocardiogram (ECG) waveform data using an ECG device. Once a representative cardiac cycle is determined, system will acquire images only at rest period of heart beat. Real time ECG waveform is used as ECG synchronization for image improvement. The imaging apparatus avoids ECG peak pulse for better chest, lung and breast imaging under influence of cardiac periodical motion. As a result, smoother data acquisition, much higher data quality can be achieved. The multiple pulsed X-ray source-in-motion tomosynthesis machine is with distributed multiple X-ray sources that is spanned at wide scan angle. At rest period of one heartbeat, multiple X-ray exposures are acquired from X-ray sources at different angles. The machine itself has capability to acquire as many as 60 actual projection images within about two seconds.

The present invention relates to medical X-ray imaging. To provide X-ray imaging with the option of steeper viewing angles, a medical X-ray imaging device (10) is provided, comprising an X-ray source (12) and an X-ray detector (14). The X-ray source is configured to generate an X-ray beam (16). The X-ray detector is configured to receive radiation from the X-ray beam at a detector surface (18) after it has passed through an object of interest (20). The device is configured to provide an X-ray beam for imaging that covers an area (24) of the detector that is smaller than the detector surface (18) and whose surface center (28) is offset from a center (30) of the detector surface.

The application discloses a collimator replacement mechanism, which comprises a storage box, a supporting plate, a sliding assembly and a driving assembly. The inner cavity of the storage box is provided with the supporting plate, the collimator is placed on the supporting plate, the sliding assembly is arranged in the storage box, and the driving assembly is used for driving the movement of the supporting plate. The driving assembly comprises a driving wheel, a driven wheel, an annular transmission member and a motor. The driving wheel and the driven wheel are rotationally connected with the wall of the storage box, the driving wheel is connected with the motor, the annular transmission member is sleeved on the driving wheel and the driven wheel, and the annular transmission member is connected with the supporting plate. The collimator replacement mechanism disclosed by the scheme is composed of the transmission path of the driving wheel, the driven wheel and the annular transmission member, and the transmission path is self-locking. The supporting plate can drive the movement of the driving wheel, the driven wheel and the annular transmission member in the reverse direction, meanwhile, the motor itself has reverse driving capability and can be driven by external force, which does not affect the reverse transmission of the supporting plate, the driving wheel, the driven wheel and the annular transmission member, and manual pulling out or pushing into the supporting plate becomes possible.

The present invention relates to a computer implemented method of generating a panoramic image of a patient (P), comprising: a step of defining a focal curve (F) relative to the patient's oral cavity (O), wherein the focal curve (F) follows the shape of the jawbone (1) of the patient (P), wherein the focal curve (F) has a predefined thickness (L) which includes at least the teeth (T) to be imaged; a step of acquiring a plurality of two dimensional x-ray projection images of the patient (P) along the focal curve (F) by means of rotating an x-ray source (3), an x-ray collimator (12) and a flat panel x-ray detector (4) around the patient's head in accordance with a predefined trajectory relative to the patient (P), wherein the x-ray collimator (12) is positioned between the patient's head and the x-ray source (3), wherein the collimator (12) has an x-ray aperture (13) to restrict the x-ray cone beam angle, wherein the width of the x-ray aperture (13) is adjustable for varying the x-ray cone beam angle. In the acquisition step, the width of the aperture (13) is continuously varied such that the width of the aperture (13) used to expose the molar region (M) of the focal curve (F) is larger than the width of the aperture (13) used to expose to the incisal region (I); and in the acquisition step, the readout region (R) of the x-ray detector (4) is continuously varied in the horizontal direction such that the readout region (R) of the x-ray detector (4) is equal to or larger that the region of the x-ray detector (4) being actively exposed through the aperture (13).

X-ray and fluoroscopic image capture and, in particular, to a versatile X-ray emitter operative to capture images of a target configured to track and position the X-ray emission relative to an image sensor that generates the X-ray image using the X-ray emission. The system is configured to prompt the user or operator of the X-ray system with various informational data to improve the outcome of the X-ray and decrease the frequency of X-ray emissions required to obtain a desirable X-ray image.

The application discloses a photon counting imaging system, method and detector based on mechanical micro scanning, wherein the system comprises: a detector array for converting incident rays from photons into electrical signals and counting, obtaining a photon counting signal; a collimator arranged in front of a ray incident path of the detector array, wherein the collimator comprises a light-transmitting aperture array, and an equivalent feature size of a single light-transmitting aperture is smaller than a size of a physical pixel of the detector; a micro-displacement driving mechanism rigidly connected with the collimator and configured to drive the collimator to perform micro-displacement stepping or continuous motion in a photosensitive surface parallel to the detector array; a synchronous control unit for obtaining position coordinates of each frame of the collimator and encapsulating the position coordinates and the photon counting signal into a data frame sequence with a space-time label; and an image processing unit configured to receive the data frame sequence, construct an observation matrix based on the position coordinates, and reconstruct a high-resolution image.

This disclosure relates generally to CT x-ray imaging systems and methods, and particularly to an inverse geometry with tetrahedron beams. Specifically, a dose efficient and controllable inverse geometry tetrahedron beam CT imaging is disclosed. The disclosed CT geometry includes a linear array of x-ray sources perpendicular to a rotation axis of the CT system and rotates together with a linear detector array extended parallel to the rotation axis. The x-ray emission from each of the sources is collimated into a fan-shaped beams projected to the linear detector array. The intensity of each beam is dynamically adjusted and controlled during the rotation of the source array and the detector array. Such a configuration provides control of x-ray intensity over a selected region of interest in a target object during the rotation even if the region of interest is off from the rotation axis, with efficient dose control.

In some embodiments an X-ray system comprises a work-station and a mammography apparatus. The mammography apparatus can comprise: a breast positioning area; a diffraction enhanced X-ray imaging apparatus; and a diffractometer for analyzing structure of tissue within a breast. The diffraction enhanced X-ray imaging apparatus and the diffractometer can be configured to move in order to interchangeably align with the breast positioning area. The work-station can be configured to control, and to process data received from, the mammography apparatus. In some embodiments, a method of controlling an X-ray system comprises: performing a diffraction enhanced X-ray imaging measurement of the breast tissue; processing the diffraction enhanced X-ray imaging measurement results using the work-station to determine coordinates of potential cancer sites; performing measurements at the coordinates of the potential cancer sites using the diffractometer; and processing the diffractometer measurement results to perform diagnostics.

A system and method are disclosed for hybrid screening in controlled-access environments that enable voluntary preventive medical imaging without interfering with mandatory security screening operations. The system comprises a non-ionizing security screening subsystem configured to perform mandatory security scans, a walk-through low-dose computed tomography (CT) medical imaging subsystem configured for voluntary preventive screening, a biometric identity verification subsystem, and a workflow orchestration and physical routing system. The system further includes automated height and weight measurement synchronized with CT image acquisition and Al-based analysis for cardiopulmonary or cardiometabolic risk assessment. The invention enables high-throughput, low-dose preventive screening in environments such as airports and other controlled-access facilities without degrading security throughput or compromising privacy, regulatory compliance, or operational efficiency.

The present invention provides a cooling system for an X-ray apparatus, the cooling system having an upper cooling unit TCU having a heat exchanger plate with an integrated cooling fluid circuit, and a support arm configured to attach the TCU and to attach a monoblock of an X-ray source of the X-ray apparatus, in particular a C-arm, and the fluid circuit is arranged on the main surface of the heat exchanger plate so as to capture heat through the main surface.

The correction method of the scattered signal caused by the wedge filter comprises the following steps: S10: performing air scanning by using a CT device, and calculating the relative intensity W of the scattered signal caused by the wedge filter under air scanning according to the air scanning result air ; S20: performing object scanning of a plurality of experimental objects by using the CT device, and calculating the theoretical scattered signal intensity W of the experimental objects under the object scanning in combination with the result of S10 theo ; S30: fitting the W theo of the experimental objects under the object scanning and the scattered signal intensity estimation W act of the experimental objects under the object scanning; and S40: correcting the scanning result according to the difference between the scattered signal intensity estimation W act of the actual object under the object scanning and the theoretical scattered signal intensity W theo of the actual object under the object scanning. The method can more accurately correct the scattered signal caused by the wedge filter. The application also provides a storage medium.