The present disclosure describes systems and methods for determining whether a motion signal derived from image data relating to a subject is synchronous with the actual motion state of the subject. The method may include determining one or more values of a symmetry related parameter of a motion signal. The method may further include correcting the motion signal if the motion signal is determined flipped.

Provided is a radiological imaging device configured to be used for the analysis of a limb and including a first module including a source configured to emit radiation; a second module including a detector configured to receive the radiation; a drive unit of the modules; a platform configured to define an outer support surface for the modules and an attachment configured to constrain the modules to the drive unit allowing the drive unit, housed in the inner volume, to command the movement of the modules resting on the outer surface.

Some embodiments include a system, comprising a hybrid imaging device comprising: a first scintillator; a first detector sensors configured to generate a signal based on photons emitted from the first scintillator; a second scintillator; a second detector sensors configured to generate a signal based on photons emitted from the second scintillator; and a control logic coupled to the first detector layer and the second detector layer; wherein: a material of the first scintillator is different from a material of the second scintillator; the first detector overlaps the second detector; and the control logic is configured to generate dose data in response to the first detector and image data in response to the second detector.

A method for evaluating a sample that includes an array of structural elements. The method includes obtaining a first small angle x-ray scattering (SAXS) pattern for a first angular relationship between the sample and an x-ray beam that exhibits a first collimation value and has a given cross-sectional area on a first side of the sample. A second SAXS pattern is obtained for a second angular relationship between the sample and the x-ray beam, while the x-ray beam exhibits a second collimation value that differs from the first collimation value while maintaining the given cross-sectional area of the x-ray beam on the first side of the sample, wherein the second angular relationship differs from the first angular relationship.

A method for evaluating a sample that includes an array of structural elements. The method includes obtaining a first small angle x-ray scattering (SAXS) pattern for a first angular relationship between the sample and an x-ray beam that exhibits a first collimation value and has a given cross-sectional area on a first side of the sample. A second SAXS pattern is obtained for a second angular relationship between the sample and the x-ray beam, while the x-ray beam exhibits a second collimation value that differs from the first collimation value while maintaining the given cross-sectional area of the x-ray beam on the first side of the sample, wherein the second angular relationship differs from the first angular relationship.

Method and apparatus for scanning a region of interest (ROI) by a gamma detector. An exemplary method includes determining, for each of multiple detector configurations, a respective weight based on an absorption profile, associating each of a plurality of portions of the ROI with a respective gamma attenuation value; and detecting gamma radiation from multiple detector configurations for time periods allocated among the detector configurations based on the weights determined.

Method and apparatus for scanning a region of interest (ROI) by a gamma detector. An exemplary method includes determining, for each of multiple detector configurations, a respective weight based on an absorption profile, associating each of a plurality of portions of the ROI with a respective gamma attenuation value; and detecting gamma radiation from multiple detector configurations for time periods allocated among the detector configurations based on the weights determined.

The present invention relates to a radioactivity measurement method and a radioactivity measurement system using data expansion. A radioactivity measurement method using data expansion according to the present invention comprises the steps of: measuring radioactivity while performing energy scanning and temporal scanning; preparing a database from a time-energy-related data set obtained in result of the scanning; expanding the database by means of random distribution fitting; and obtaining a radioactivity measurement value of desired time from the database.

A digital radiographic detector outputs positive read out signals that may oscillate. The presence of negative going portions of the read out signals may be used to determine that the detected positive signals are a result of noise, while an absence of the negative going portions may be used to determine that x-rays are impacting the detector.

The present disclosure relates to systems and methods for image data processing. A first correction coefficient corresponding to a first collimation width of a collimator of a scanner may be obtained. The collimator may have a collimation width being adjustable. A relationship between scattered radiation intensities and collimation widths may be obtained. A relationship between correction coefficients and collimation widths may be determined based on the first correction coefficient, the first collimation width, and the relationship between scattered radiation intensities and collimation widths. A target collimation width of the collimator may be obtained. A target correction coefficient may be determined based on the target collimation width and the relationship between correction coefficients and collimation widths.