Abstract: Disclosed in embodiments of the present application is a heterogeneous micro-optics imaging module, including: a micro-optics unit, including multiple optical zones optically shielded from each other, wherein optical parameters of at least two optical zones among multiple optical zones are different from each other; an image sensing unit, provided on a side of the micro-optics unit away from an exterior reflection source, used for converting light processed through multiple optical zones of the micro-optics unit into multiple corresponding image signals.

Abstract: Embodiments include a method, comprising: receiving measured radiation obtained from a radiation detector that received radiation through an object; simulating the measured radiation obtained from the radiation detector that received radiation through the object; generating an offset based on the measured radiation and the simulated measured radiation; estimating scatter radiation based on the offset; and estimating primary radiation based on the estimated scatter radiation

Abstract: An imaging device includes: a scintillator layer; and an array of photodiode elements; wherein the scintillator layer is configured to receive radiation that has passed through the array of photodiode elements. An imaging device includes: a scintillator layer having a plurality of scintillator elements configured to convert radiation into photons; and an array of photodiode elements configured to receive photons from the scintillator layer, and generate electrical signals in response to the received photons; wherein at least two of the scintillator elements are separated by an air gap. An imaging device includes: a first scintillator layer having a plurality of scintillator elements arranged in a first plane; and a second scintillator layer having a plurality of scintillator elements arranged in a second plane; wherein the first scintillator layer and the second scintillator layer are arranged next to each other and form a non-zero angle relative to each other.

Abstract: The disclosure discloses an antiemetic control device and a control method thereof, comprising a housing, a MCU single-chip microcontroller provided in the housing, a charging circuit, a discharging circuit and a rechargeable battery for supplying power, a button, a display screen, an alarm device and a plurality of mode indicator lights disposed on the housing, two electrodes and an optical pulse detecting unit disposed on the lower surface of the housing, and two wrist straps disposed on the housing. The disclosure has the characteristics of stable therapeutic effects.

Abstract: One example method for estimating scatter associated with a target object may include acquiring a set of original projection data that includes primary radiation and scattered radiation at one or more selected projection angles associated with the target object, generating a first set of estimated scatter data from the set of original projection data, generating reconstructed image data by performing a first pass reconstruction using the first set of estimated scatter data, and generating a set of reference scatter data associated with the target based on the reconstructed image data. The example method may also include generating a set of reference primary plus scatter data associated with the target object based on the reconstructed image data, generating a second set of estimated scatter data associated with the target object based on the set of reference primary plus scatter data, and generating perturbation data associated with the target object.

Abstract: In accordance with at least some embodiments of the present disclosure, a process to estimate scattered radiation contained in x-ray projections for computed tomography (CT) reconstruction is provided. The process may construct an object model based on a plurality of projection images generated by CT scanning of an object using an x-ray radiation source and a detector panel. The process may construct a virtual radiation source based on the x-ray radiation source, and a virtual detector panel based on the detector panel. The process may perform a simulated CT scanning of the object model by simulating macroscopic behavior of particles being emitted from the virtual radiation source, passing through the object model, and being detected by the virtual detector panel. And the process may generate a simulated scatter image based on a first subset of particles scattered during the simulated CT scanning of the object model.

Abstract: The disclosure discloses an antiemetic control device and a control method thereof, comprising a housing, a MCU single-chip microcontroller provided in the housing, a charging circuit, a discharging circuit and a rechargeable battery for supplying power, a button, a display screen, an alarm device and a plurality of mode indicator lights disposed on the housing, two electrodes and an optical pulse detecting unit disposed on the lower surface of the housing, and two wrist straps disposed on the housing. The disclosure has the characteristics of stable therapeutic effects.

Abstract: In accordance with at least some embodiments of the present disclosure, a process to estimate scattered radiation contained in x-ray projections for computed tomography (CT) reconstruction is provided. The process may construct an object model based on a plurality of projection images generated by CT scanning of an object using an x-ray radiation source and a detector panel. The process may construct a virtual radiation source based on the x-ray radiation source, and a virtual detector panel based on the detector panel. The process may perform a simulated CT scanning of the object model by simulating macroscopic behavior of particles being emitted from the virtual radiation source, passing through the object model, and being detected by the virtual detector panel. And the process may generate a simulated scatter image based on a first subset of particles scattered during the simulated CT scanning of the object model.

Abstract: An imaging device includes: a scintillator layer; and an array of photodiode elements; wherein the scintillator layer is configured to receive radiation that has passed through the array of photodiode elements. An imaging device includes: a scintillator layer having a plurality of scintillator elements configured to convert radiation into photons; and an array of photodiode elements configured to receive photons from the scintillator layer, and generate electrical signals in response to the received photons; wherein at least two of the scintillator elements are separated by an air gap. An imaging device includes: a first scintillator layer having a plurality of scintillator elements arranged in a first plane; and a second scintillator layer having a plurality of scintillator elements arranged in a second plane; wherein the first scintillator layer and the second scintillator layer are arranged next to each other and form a non-zero angle relative to each other.

Abstract: One example method for estimating scatter associated with a target object may include acquiring a set of original projection data that includes primary radiation and scattered radiation at one or more selected projection angles associated with the target object, generating a first set of estimated scatter data from the set of original projection data, generating reconstructed image data by performing a first pass reconstruction using the first set of estimated scatter data, and generating a set of reference scatter data associated with the target based on the reconstructed image data. The example method may also include generating a set of reference primary plus scatter data associated with the target object based on the reconstructed image data, generating a second set of estimated scatter data associated with the target object based on the set of reference primary plus scatter data, and generating perturbation data associated with the target object.

Abstract: Techniques described herein generally relate to estimating scatter. In one embodiment, one example method for estimating scatter associated with a target object may include generating a set of original projections associated with the target object, generating a set of reference scatter data associated with the target object at one or more selected projection angles, generating a first set of estimated scatter data associated with the target object also at the one or more selected projection angles, adjusting first values for one or more kernel parameters of one or more kernels that reduce a difference between the set of reference scatter data and the first set of estimated scatter data, interpolating the adjusted first values for remaining projections out of the set of original projections to generate second values for the one or more kernel parameters, and generating a second set of estimated scatter data associated with the target object.

Abstract: Techniques described herein generally relate to estimating scatter. In one embodiment, one example method for estimating scatter associated with a target object may include generating a set of original projections associated with the target object, generating a set of reference scatter data associated with the target object at one or more selected projection angles, generating a first set of estimated scatter data associated with the target object also at the one or more selected projection angles, adjusting first values for one or more kernel parameters of one or more kernels that reduce a difference between the set of reference scatter data and the first set of estimated scatter data, interpolating the adjusted first values for remaining projections out of the set of original projections to generate second values for the one or more kernel parameters, and generating a second set of estimated scatter data associated with the target object.

Abstract: Embodiments of the disclosure generally set forth techniques for adjusting an estimate of scattered radiation of a target object. One example method includes generating a plurality of radiographic projections, selecting a first radiographic projection and a second radiographic projection of the target object from the plurality of radiographic projections, forming first estimates of scattered radiation in the first and second radiographic projections, applying the first estimates of scattered radiation to the first and second radiographic projections to generate a modified first radiographic projection and a modified second radiographic projection, comparing the modified first and second radiographic projections to generate correction modules, and applying one of the correction modules to a first subset of the plurality of radiographic projections and another of the correction modules to a second subset of the plurality of radiographic projections.

Abstract: The claimed subject matter describes a novel technique to measure the beam profile using an area detector. In one embodiment, a set of one-dimensional beam profile measurements is performed by taking two images under the same source conditions but at two different positions of the detector, with each position of the detector shifted by a certain distance in the direction corresponding to the direction of the one-dimensional profile measurement. In further embodiments, a set of two-dimensional beam profile measurements is achieved by determining a second set of one-dimensional profiles from the same sampling points in a second direction and building a two-dimensional map of the beam profile by correlating the first one-dimensional profile measurement with the second one-dimensional profile measurement.

Abstract: Techniques described herein generally relate to identifying, assessing, and managing cancer growth rates and potential metastasis.

Abstract: In accordance with at least some embodiments of the present disclosure, a process for enhancing an image is presented. The process may include receiving a first plurality of projections, wherein the first plurality of projections contain computed tomography (CT) data obtained in multiple motion phases and also image data attributable to a first portion of a scanned object. The process may include expanding the first plurality of projections to cover at least the first portion of the scanned object to generate a second plurality of projections. The process may further include generating a phase-correlated image based on a multi-phase image and a phase-correlated difference image, wherein the multi-phase image is reconstructed based on the second plurality of projections, and the phase-correlated difference image is reconstructed based on the first plurality of projections and the second plurality of projections.

Abstract: In accordance with at least some embodiments of the present disclosure, a process for enhancing a motion-blurred image is presented. The process may include obtaining a prior image based on a plurality of projections, wherein the plurality of projections are computed tomography (CT) images obtained in multiple motion phases. The process may further include performing an enhancement operation based on the prior image to generate an enhanced prior image, generating a plurality of re-projections by forward-projecting the enhanced prior image, generating a plurality of phase-correlated difference images based on the plurality of projections and the plurality of re-projections, filtering the plurality of phase-correlated difference images to generate a plurality of filtered phase-correlated difference images, and generating a plurality of phase-correlated images based on the plurality of filtered phase-correlated difference images and the enhanced prior image.

Abstract: In accordance with at least some embodiments of the present disclosure, a process for enhancing a motion-blurred image is presented. The process may include receiving a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases. The process may include generating an enhanced multi-phase image by performing an enhancement operation based on the plurality of projections. The process may further include generating a plurality of phase-correlated images based on the plurality of projections and the enhanced multi-phase image.

Abstract: A system and method for forming an adjusted estimate of scattered radiation in a radiographic projection of a target object, which incorporates scattered radiation from objects adjacent to the target object, such as a patient table. A piercing point equalization method is disclosed, and a refinement of analytical kernel methods which utilizes hybrid kernels is also disclosed.

Abstract: Several related inventions for estimating scattered radiation in radiographic projections are disclosed. Several of the inventions use scatter kernels of various forms, including symmetric and asymmetric forms. The inventions may be used alone or in various combinations with one another. The resulting estimates of scattered radiation may be used to correct the projections, which can improve the results of tomographic reconstructions. Still other inventions of the present application generate estimates of scattered radiation from shaded or partially shaded regions of a radiographic projection, which may be used to correct the projections or used to adjust the estimates of scattered radiation generated according to inventions of the present application that employ kernels.