Abstract: Provided is a method for compensating scattering of an X-ray image, which includes: (a) receiving an original X-ray image as an input; (b) initializing a primary image into the original X-ray image; (c) estimating a scattered image from the primary image; (d) updating the primary image by using the original X-ray image and the scattered image; (e) judging whether a termination condition is satisfied; (f) iterating steps (c) to (e) above by using the primary image updated through step (d) above into the primary image for step (c) above when the termination condition is not satisfied; and (g) outputting the primary image updated through step (d) above as a scattering compensated image when the termination condition is satisfied.

Abstract: According to one embodiment, a recording medium records a shape calculation program causing a computer to execute creating a first data frame which is a set of first factors corresponding to a shape to be measured from a first scattering profile obtained by irradiating a first structure on a substrate with an electromagnetic wave, creating a second data frame corresponding to the first data frame from a second scattering profile calculated based on a second structure, the second structure being a structure simulated, fitting the first data frame and the second data frame, and determining the shape of the first structure based on the fitting result.

Abstract: At least one standard image representing a standard object having different thicknesses, the at least one standard image being obtained by imaging the standard object by radiation in a state in which an object is interposed between the standard object and a radiation detector is acquired, a relationship between the thickness of the standard object and a radiation attenuation coefficient of the standard object, which corresponds to an energy characteristic of the radiation, the relationship reflecting an influence of beam hardening by the standard object and the object, is derived, a primary ray component corresponding to the thickness of the standard object included in the standard image is derived based on the relationship between the thickness of the standard object and the radiation attenuation coefficient of the standard object, a scattered ray component corresponding to the thickness of the standard object included in the standard image is derived based on a difference between the standard image and the

Abstract: A mobile medical imaging device that allows for multiple support structures, such as a tabletop or a seat, to be attached, and in which the imaging gantry is indexed to the patient by translating up and down the patient axis. In one embodiment, the imaging gantry can translate, rotate and/or tilt with respect to a support base, enabling imaging in multiple orientations, and can also rotate in-line with the support base to facilitate easy transport and/or storage of the device. The imaging device can be used in, for example, x-ray computed tomography (CT) and/or magnetic resonance imaging (MRI) applications.

Abstract: Provided is a fully-spherical radiation therapy system. The fully-spherical radiation therapy system includes a multi-degree-of-freedom robot, a linear accelerator and a double-image-guided positioning mechanism. The double-image-guided positioning mechanism includes four ray sources and two ray detectors, and the four ray sources include a first ray source, a second ray source, a third ray source and a fourth ray source. An intersection of two beams emitted by the first ray source and the second ray source is a low-level treatment center, an intersection of two beams emitted by the third ray source and the fourth ray source is a high-level treatment center, and the low-level treatment center and the high-level treatment center form a fully-spherical treatment space for multiple treatment nodes of a spherical center.

Abstract: An example of a method for time-resolved calculation of a deformation of a body comprises calculating (110) a model of the body during the deformation. The method further comprises calculating (120) a predicted X-ray image for the body for a plurality of time points during the deformation based on the model. The method further comprises obtaining (130) one measured X-ray image of the body each for the time points during the deformation. The method further comprises modifying (140) the model based on the predicted X-ray images and the measured X-ray images.

Abstract: A non-transitory recording medium storing a computer readable program that causes a computer of a moving image management apparatus, which manages a radiographic moving image, to perform: obtaining that is obtaining a first radiographic moving image and a second radiographic moving image, the first radiographic moving image showing a movement of a subject while breathing is repeated a first number of times per unit time, and the second radiographic moving image showing a movement of the subject while breathing is repeated a second number of times that is different from the first number of times per the unit time; and associating that is associating respective numbers of breaths during imagings with the first radiographic moving image and the second radiographic moving image that are obtained in the obtaining.

Abstract: An EUV mask inspection device includes: an EUV light source for outputting EUV light with a wavelength ranging from 5 nm to 15 nm; a multilayer reflection zone plate having an EUV reflection multilayer film, which is a planar substrate, and a zone plate pattern; and an EUV lighting unit for creating EUV illumination light by obtaining 1st diffraction light reflected after radiating EUV light output from the EUV light source to the multilayer reflection zone plate. The EUV mask inspection device further includes: an aperture for providing monochromatic light or reducing a light radiation area by reducing a linewidth of optical wavelength radiated from the EUV lighting unit; a transmissive zone plate for forming expanded light by collecting reflected or scattered light after radiating light passing through the aperture to the EUV mask; and an image sensor for measuring intensity of light through EUV mask measured light.

Abstract: A PET and Compton imaging method implemented by a device including at least two facing PET modules. The device includes a Compton camera arranged outside a plane containing the PET modules for forming a trihedron with the PET modules and producing a Compton view. The acquisition fields of the PET and Compton views having an overlap area covering the object to be imaged. The device allowing the following steps to be carried out: acquisition of a Compton view; location of a dense area and its contour on the Compton view; Computation of the 2D map of the probability of detection of the presence of a source from the Compton view of the Compton camera; Coincidence detection by the PET cameras and association of a response line (LOR); and Segmentation of LORs crossing the dense area by using the detection probability determined by the Compton view.

Abstract: Various embodiments of the present disclosure include a C-arm registration system employing a controller (70) for registering a C-arm (60) to an X-ray ripple marker (20) including a ripple pattern (50) radially extending from a fixed point (40) of the X-ray ripple marker (20). In operation, the controller (70) identifies the ripple pattern (50) within an X-ray image generated from an X-ray projection by the C-arm (60) and illustrative of a portion or an entirety of the ripple pattern (50), the identification of the ripple pattern (50) within the X-ray image is characteristic of a pose of the X-ray projection by the C-arm (60) relative to the X-ray rippler marker (20). The controller (70) further analyzes the ripple pattern (50) within the X-ray image to derive one or more transformation parameters definitive of the pose of the X-ray projection by the C-arm (60) relative to the X-ray rippler marker (20), and registers the C-arm (60) to the X-ray ripple marker (20) based on the transformation parameter(s).

Abstract: Systems and methods utilizing a two-way mirror display for patient self-positioning for dental x-ray image acquisition. The system includes a camera configured to capture an image of a patient, a display, a two-way mirror positioned between a patient location and the display, and an electronic processor. The electronic processor is configured to select, based upon a user input, an operating mode for the display; and based upon the selected operating mode, displaying at least one image on the display. The method includes receiving image data from a camera, identifying at least one facial feature of the patient in the image data, determining if a face of the patient is aligned with at least one anatomical plane based upon the at least one facial feature, and displaying at least one movement guide on a display based upon the determined alignment of the face of the patient.

Abstract: A radiation treatment system may include a gantry configured to rotate around an object, a treatment head moving with the gantry, a plurality of imaging radiation sources configured to emit imaging beams toward the object, and one or more first detectors configured to detect at least a portion of the imaging beams. When the treatment head is delivering a treatment beam to the object, the plurality of imaging radiation sources and the one or more first detectors may be positioned outside at least a portion of a maximum treatment radiation region so as not to interfere with the treatment beam. At least one of the plurality of imaging radiation sources and the one or more first detectors may be positioned at or near an edge of the maximum treatment radiation region.

Abstract: A computer-implemented method of performing a treatment fraction of radiation therapy comprises: determining a current position of a target volume of patient anatomy; based on the current position of the target volume, computing an accumulated dose for non-target tissue proximate the target volume; determining that the accumulated dose is less than a current value for a dose budget of the non-target tissue; and in response to the accumulated dose being less than the current value for the dose budget, applying a treatment beam to the target volume while the target volume is in the current position.

Abstract: A system and method for measuring a sample by X-ray reflectance scatterometry. The method may include impinging an incident X-ray beam on a sample having a periodic structure to generate a scattered X-ray beam, the incident X-ray beam simultaneously providing a plurality of incident angles and a plurality of azimuthal angles; and collecting at least a portion of the scattered X-ray beam.

Abstract: A newly developed algorithm and software can effectively and accurately predict the collisions for the accelerator, phantom, and patient setups, and can help physicians to choose the noncolliding and optimized beam sets efficiently via offering the ideal hits of planning target volume (PTV) and constraints of organ at risks (OARs).

Abstract: A method for correcting PET data includes acquiring first PET data at a time interval. The method also includes acquiring a first normalization coefficient corresponding to the first PET data. The method also includes determining a scale factor based at least partially on the first normalization coefficient. The method also includes determining second PET data based on the first PET data, the scale factor, and the second normalization coefficient. The method also includes determining a first dead time correction coefficient corresponding to the second PET data. The method also includes determining third PET data based on the second PET data and the first dead time correction coefficient. The method further includes reconstructing a first image based on the third PET data.

Abstract: Proposed is an X-ray imaging stand with a straight arm structure, the X-ray imaging stand including a detector comprising an X-ray detection module and a detector arm configured to support the X-ray detection module, an imaging module comprising an X-ray imaging tube and a tube arm configured to support the X-ray imaging tube, a main arm, each of the detector and the imaging module being connected to the main arm, and a stand main-body configured to force the main arm to ascend and descend and to be rotated, wherein the detector and the imaging module are configured in such a manner as to have the same weight, and the detector arm and the tube arm are both accommodated within the main arm, and are moved slidably in conjunction with each other in such a manner as to expand and contract in opposite directions with the main arm in between.

Abstract: An optical apparatus is provided for manipulating light from x-ray sources (e.g., free electron lasers). In some embodiments, the optical apparatus includes a first capillary optic having a first longitudinal axis and a second capillary optic having a second longitudinal axis that is angled with respect to the first longitudinal axis. The second capillary optic is positioned to receive light directly from the first capillary optic.

Abstract: Systems and methods for interpreting high-energy interactions on a sample are described in this application. In particular, this application describes an analysis method that comprises impinging radiation from a source on an analyte, detecting the energy interactions resulting from the impinging radiation using a radiation detector, adjusting the signal from the radiation detector using a machine learning module to emphasize specific parts of the detector signal, training the machine learning module in a supervised or unsupervised manner, producing quantitative and qualitative models using the machine leaning module, and then applying the machine learning module to additional energy interactions. The signal received by the detector can be preprocessed to emphasize specific parts of the detector signal, which is then mapped to a machine learning module for training in a supervised or unsupervised manner.

Abstract: A two-wavelength, single-camera imaging thermography system for in-situ temperature measurement of a target, comprising: a target light path inlet conduit for receiving a target light beam reflected from the target; a beam splitter installed in a splitter housing at a distal end of the target light path conduit, wherein the beam splitter divides the target light beam into a first light beam and a second light beam; a first light path conduit emanating from the splitter housing comprising a first aperture iris installed within the first light path conduit for aligning the first light beam; a first band pass filter installed within the first light path conduit for regulating the first light beam to a first wavelength ?1 and an optional half waveplate installed within the first light path conduit to modulate a polarization ratio of the first light beam of ?1 wavelength; a second light path conduit emanating from the splitter housing comprising a second aperture iris installed within the second light path conduit