Abstract: The invention relates to a method for verifying the positioning of a fibrous preform in a blade, the blade having been obtained by injecting a resin into a mould having the shape of a blade and in which a preform has been placed, the blade extending in an orthonormal blade frame of reference X, Y, Z, the blade comprising a blade root extending longitudinally along an axis X, a vane extending from the blade root along an axis Z, the blade having a thickness defined along an axis Y, the preform comprising glass tracers positioned at the surface of the preform, the centre of the tracers defining a neutral axis located at a height along the axis Z in the direction defined by the axis X, the method comprising the following steps: the acquisition (E31) of tomographic 2D projections of the blade using an imaging system comprising an X-ray source, each projection being acquired at a given orientation of the X-ray source with respect to the blade; the combining (E32, E32a, E32b) of the 2D projections in the direction

Abstract: Improved imaging devices and methods. A portable SPECT imaging device may co-register with imaging modalities such as ultrasound. Gamma camera panels including gamma camera sensors may be connected to a mechanical arm. A coded aperture mask may be placed in front of a gamma-ray photon sensor and used to construct a high-resolution three-dimensional map of radioisotope distributions inside a patient, which can be generated by scanning the patient from a reduced range of directions around the patient and with radiation sensors placed in close proximity to this patient. Increased imaging sensitivity and resolution is provided. The SPECT imaging device can be used to guide medical interventions, such as biopsies and ablation therapies, and can also be used to guide surgeries.

Abstract: A radiation detector comprising a radiation sensor obtained by arranging first electrodes on a semiconductor substrate configured to convert incident radiation into charges, an integrated circuit, and an interposer is provided. The interposer comprises first terminals arranged on a first surface facing the sensor and connected to the first electrodes, and second terminals arranged on a second surface facing the integrated circuit and connected to the integrated circuit. Each of the first terminals is connected to one second terminal. The number of the second terminals is smaller than the first terminals. The substrate comprises a third surface on which the first electrodes are arranged and a fourth surface on which second electrodes are arranged. The detector further comprises a selector configured to select the second electrode from the second electrodes to supply a potential for converting the incident radiation into charges.

Abstract: An X-ray image processing apparatus comprising: a first obtaining unit configured to obtain a first X-ray image including an object; a second obtaining unit configured to obtain a first measured value associated with an X-ray condition of the first X-ray image, a second X-ray image that does not include the object, and a second measured value associated with an X-ray condition of the second X-ray image; a gain correction unit configured to correct the first X-ray image based on the first measured value, the second X-ray image, and the second measured value; and an image generation unit configured to generate an evaluation image for evaluating a state of the object based on a corrected image that is the first X-ray image corrected by the gain correction unit.

Abstract: The present invention relates to a system (100) and a method for correcting a number of counts (115) in an energy bin of X-ray photons detected by a photon counting detector (111) for a spectral computed tomography system (300). An illumination history (125) of the photon counting detector is taken into account to determine a gain and/or an offset of the photon counting detector. The number of counts in an energy bin of detected photons is corrected according to a correction value (135) corresponding to the determined gain and/or offset.

Abstract: The embodiment of the present disclosure provides a method and a device for fine reconstruction of a sedimentation structure of a flume. The device includes: a combined bottom plate and a combined freezing flume, wherein the combined bottom plate is formed by tiling and splicing a plurality of equal-thickness and rectangular basic bottom plates, a splicing gap is located between adjacent basic bottom plates, the splicing gap is filled with elastic adhesive, and the filled splicing gap is as thick as the basic bottom plates; the combined freezing flume includes a plurality of local freezing flumes; and each of the basic bottom plates has a local freezing flume that matches the basic bottom plate.

Abstract: Described and represented is a method for determining the content of at least one plant substance of at least one part of a plant. In order for the content of plant substances, in particular secondary plant substances, of at least one part of a plant to be determined and optimized more expediently, it is provided that the at least one part of the plant is irradiated successively with light of different wavelengths and/or wavelength ranges and that, in response to the irradiation of the at least one part of the plant with light of each wavelength and/or at each wavelength range, the chlorophyll fluorescence of at least substantially the same wavelength and/or at least substantially the same wavelength range is measured in each case.

Abstract: Gamma ray detection system comprising a detection module assembly including at least two detection modules configured for positron emission tomography (PET) scanning of a target zone, each detection module comprising a plurality of stacked scintillator plates each having a major surface oriented to generally face the target zone and lateral minor surfaces defining edges of the scintillator plates, a plurality of photon sensors being mounted against said edges layer photon sensor 18a configured to detect a scintillation event in the scintillator plate from a gamma ray incident on the major surface. The gamma ray detection system is further configured to function as a Compton camera, at least one scintillator plate that is not the scintillator plate closest to the target zone being configured as an absorber scintillator plate for said Compton camera.

Abstract: Systems, methods, and computer software are disclosed for determining a shape of a radiation field generated by a radiation delivery system through the use of a scintillator and a camera that is configured to acquire images of light emitted by the scintillator during delivery of a radiation beam. A support structure may be mounted to the radiation delivery system and the scintillator and camera may be fixed to the support structure such that the scintillator is not perpendicular to the axis of the radiation beam. An edge detection algorithm may be applied to radiation patterns present in the camera images in order to determine the location of an edge of a leaf of a multi-leaf collimator.

Abstract: A method includes obtaining an image having M sections and each section having N pixels. The method further includes deriving N sub-images from the image, wherein each sub-image has M sections and each section has N pixels. The i-th pixel of the j-th section of the i-th sub-image has a pixel value equal to a pixel value of the i-th pixel of the j-th section of the image and other pixels of the j-th section of the i-th sub-image are set to 0, where i traverses from 1 to N, and j traverses from 1 to M. The method further includes providing N projection patterns and calculating a projection for each sub-image by performing convolution of the respective sub-image with a corresponding one of the projection patterns, thereby obtaining N projected sub-images. The method further includes summing up the N projected sub-images, thereby obtaining a projection of the image.

Abstract: A method of calibrating a monitoring system (10,14) is described in which a calibration phantom (70) is located with its center located approximately at the isocenter of a treatment room through which a treatment apparatus (16) is arranged to direct radiation, wherein the surface of the calibration phantom (70) closest to an image capture device (72) of the monitoring system (10,14) is inclined approximately 45° relative to the camera plane of an image capture device of the monitoring system. Images of the calibration phantom (70) are then captured using the image capture device (72) and the images are processed to generate a model of the imaged surface of the calibration phantom.

Abstract: The present application provides a suspension device and an X-ray imaging system. The suspension device is configured to bear a tube device of an X-ray imaging system. The suspension device includes a plurality of sleeves and a guide rail assembly. Cross-sections of the plurality of sleeves have substantially the same shape but different sizes. The plurality of sleeves are sequentially arranged. The guide rail assembly is provided between at least one sleeve and another sleeve adjacent thereto. The guide rail assembly includes a protruding member extending along a surface of the at least one sleeve and a sliding member provided on the another sleeve and engaging with the protruding member. The sliding member is capable of moving relative to the protruding member so as to drive the sleeves to move relative to each other.

Abstract: Systems and methods associated with a phantom assembly are provided. A housing includes a plurality of slots and is formed from a first material having a first appearance under a selected imaging modality. A plurality of inserts are each configured to be received by one of the plurality of slots. At least one insert includes a target formed from a second material having a second appearance under the selected imaging modality, such that the target is readily distinguishable from the housing under the selected imaging modality. The target includes a hollow portion that can be accessed via a removable plug.

Abstract: A system and method for delivering radiation therapy to a patient includes generating a radiation therapy plan and adjusting a shape of at least one of a plurality of multi-leaf collimators (MLCs) arranged in an arc about a patient bed to create a respective plurality of desired beam profiles for each of the plurality of MLCs to thereby implement the ultrafast radiation therapy plan delivery. The method further includes control a radiation therapy source to execute the radiation therapy plan by creating the respective plurality of desired beam profiles for each of the plurality of MLCs.

Abstract: A wireless signal transmitter is provided for a radiotherapy device, said radiotherapy device being configured to provide radiation to a subject via a source of radiation, and further being configured to output a non-continuous beam of radiation, wherein said non-continuous beam of radiation has a first, time-related property associated therewith. The wireless signal transmitter is configured to wirelessly transmit a signal comprising data regarding the first, time-related property that is associated with the non-continuous beam of radiation, to a wireless signal receiver.

Abstract: An object of the present invention is to increase sensitivity and position resolution of measurement of an arrival position of a charged particle beam irradiated during treatment. A beam monitoring system includes: a gamma ray detector that detects gamma rays generated by interaction between a charged particle beam and an irradiation target; a shield that is disposed between the gamma ray detector and an irradiation axis of the beam and has a plurality of slits; and a calculation unit that analyzes a detection result of the gamma ray detector and reconfigures a count distribution of the detected gamma rays into a distribution of the beam irradiation axis based on a geometric arrangement of the shield, the detector, and the irradiation axis of the beam. The calculation unit obtains the arrival position of the particle beam from the reconfigured distribution.

Abstract: A phase-contrast imaging detector includes a plurality of pixels. Each pixel includes a detection material that generates a measurable parameter in response to X-ray photons. Each pixel also includes a plurality of sub-pixel resolution readout structures. The sub-pixel resolution readout structures are in an alternating pattern with a spacing therebetween that is larger than a frequency of a phase-contrast interference pattern but small enough to enable charge sharing between adjacent sub-pixel resolution readout structures when an X-ray photon hits between the adjacent sub-pixel resolution readout structures. The phase-contrast imaging detector also includes readout circuitry configured to read out signals from the plurality of sub-pixel readout structures. The plurality of sub-pixel resolution readout structures includes two or more electrodes having alternating arms that form an interleaved comb structure.

Abstract: An X-ray detector is provided. The X-ray detector includes multiple detector sub-modules. Each detector sub-module includes a semiconductor layer and multiple detector elements. A plurality of detector elements is disposed on the semiconductor layer. Wiring traces extending from the plurality of detector elements to readout circuitry, where each detector element is coupled to a respective wiring trace. One or more of the wiring traces extend over one or more detector elements of the plurality of detector elements. Processing circuitry is configured to perform coincidence detection to determine which detector element of the plurality of detector elements is associated with a location of an X-ray hit when the X-ray coincidently hits one of the detector elements of the plurality of detector elements and one or more of the wiring traces coupled to respective detector elements of the plurality of detector elements.

Abstract: A method for identifying a microorganism to be identified, which includes the following steps: obtaining an Excitation-Emission EEM of the microorganism to be identified, analysing the main components of the EEM matrix using at least one reference EEMr matrix, projecting the result of the analysis onto a plane defined by two main components, and identifying the microorganism to be identified.

Abstract: X-ray tomography systems and methods for imaging an aircraft part are disclosed herein. The systems include a part fixture, which is configured to support the aircraft part. The systems also include an x-ray source, which is configured to selectively emit x-rays, and an x-ray detector, which is configured to detect the x-rays. The systems further include a support structure that operatively supports the x-ray source and the x-ray detector such that x-rays emitted by the x-ray source travel along a beam path that is incident upon the x-ray detector and that passes through the aircraft part. The systems also include a rotary scanning structure, which is configured to selectively rotate the support structure about a scan axis, and a longitudinal scanning structure, which is configured to selectively translate the support structure along the scan axis. The methods include methods of utilizing the systems.