A mobile radiography apparatus has a moveable (e.g., wheeled) transport frame and an adjustable column mounted at the frame. A boom apparatus supported by the adjustable column can support an x-ray source assembly. Radiation or X-ray source assembly methods and/or apparatus embodiments can provide mobile radiography carts a capability to direct x-ray radiation towards a subject from one or a plurality of different source positions, where the X-ray source assembly includes a first x-ray power source and a second plurality of distributed x-ray sources disposed in a prescribed spatial relationship.

An X-ray imaging apparatus is capable of cutting the time needed for the long-length image. A candidate point registration element 25 registers an end of a long-length region as a candidate point. A start location determination element 27 determines the candidate point closest to the present location of the imaging system as the imaging start location based on the distance between the present location of the imaging system and each candidate point. A distance that the imaging system shifts at the imaging preparation step of the X-ray images by determining the imaging start location prior to imaging of a series of X-ray images that form a long-length image can be shortened. When the long-length imaging is implemented multiple times, the shift-distance of the imaging system is further shortened by updating the setting of the imaging start location in advance every time when a series of X-ray images is taken, so that the time needed for the entire steps relative to the long-length imaging can be largely cut.

A method including imaging a first field of view (FOV) of a volume of interest (VOI) that includes a region of interest (ROI) from a first position and imaging the first FOV of the VOI from a second position. The method including receiving a first identification of a first portion of the imaged VOI designating the ROI to be imaged and a second identification of a second portion of the imaged VOI from the second position designating the ROI to be imaged. In response to the first identification, adjusting an aperture of a collimator of an imaging source to a second FOV corresponding to the ROI from the first position and imaging the ROI using the second FOV. In response to the second identification, adjusting the aperture of the collimator to a third FOV corresponding to the ROI from the second position and imaging the ROI using the third FOV.

A method for X-ray imaging includes determining one or more pre-shot parameters corresponding to a region of interest in a subject based on an optical image of the region of interest obtained from an optical sensor. The method further includes controlling an X-ray device to generate a pre-shot X-ray image using a first X-ray dosage, based on the one or more-pre-shot parameters. The method also includes determining at least one main-shot parameter based on the pre-shot X-ray image. The method includes controlling the X-ray device to generate a main-shot X-ray image using a second X-ray dosage greater than the first X-ray dosage, based on the at least one main-shot parameter.

A variable stop apparatus for arrangement between an X-ray source and an object to be measured in a CT-scanner and a CT-scanner including the variable stop apparatus are provided. The variable stop apparatus includes a stop carrier that is pivotable about a pivot axis. The stop carrier has at least two stops. The at least two stops are in each case configured to be brought into a predetermined angular position by pivoting the stop carrier. The at least two stops are arranged at different longitudinal positions with respect to a longitudinal direction that is defined by the pivot axis.

An X-ray imaging apparatus is capable of cutting the time needed for the long-length image. A candidate point registration element 25 registers an end of a long-length region as a candidate point. A start location determination element 27 determines the candidate point closest to the present location of the imaging system as the imaging start location based on the distance between the present location of the imaging system and each candidate point. A distance that the imaging system shifts at the imaging preparation step of the X-ray images by determining the imaging start location prior to imaging of a series of X-ray images that form a long-length image can be shortened. When the long-length imaging is implemented multiple times, the shift-distance of the imaging system is further shortened by updating the setting of the imaging start location in advance every time when a series of X-ray images is taken, so that the time needed for the entire steps relative to the long-length imaging can be largely cut.

A tomographic imaging system includes a source configured to irradiate an object; a first image sensor including a first semiconductor substrate having a first face upon which a monolithic first pixel array is located; and a gantry configured to hold the first image sensor and rotate the image sensor around the object about a first rotation axis, the first pixel array including a first plurality of pixels configured to receive light that travels through or from the object based on the irradiation, the first plurality of pixels of the first pixel array being arranged in one or more rows and a plurality of columns such that, a total number of the one or more rows is less than a total number of the plurality of columns, and the one or more rows extend in a first direction, the first image sensor being arranged such that an angle between the first direction and a second direction is greater than 45 degrees and equal to or less than 90 degrees, the second direction being a direction parallel to the rotation axis or a direction in which the object moves during analysis of the object by the imaging system.

A tomographic imaging system includes a source configured to irradiate an object; a first image sensor including a first semiconductor substrate having a first face upon which a monolithic first pixel array is located; and a gantry configured to hold the first image sensor and rotate the image sensor around the object about a first rotation axis, the first pixel array including a first plurality of pixels configured to receive light that travels through or from the object based on the irradiation, the first plurality of pixels of the first pixel array being arranged in one or more rows and a plurality of columns such that, a total number of the one or more rows is less than a total number of the plurality of columns, and the one or more rows extend in a first direction, the first image sensor being arranged such that an angle between the first direction and a second direction is greater than 45 degrees and equal to or less than 90 degrees, the second direction being a direction parallel to the rotation axis or a direction in which the object moves during analysis of the object by the imaging system.

System and method of more efficiently identifying and segmenting anatomical structures from 2-D cone beam CT images, rather than from reconstructed 3-D volume data, is disclosed. An image processing system receives, from a cone beam CT device, at least one 2-D x-ray image, which is part of a set of x-ray images taken from a 360 degree scan of a patient with a cone beam CT imaging device. The x-ray image contains at least one anatomical structure such as vertebral bodies to be segmented. The received x-ray is then analyzed in order to identify and segment the anatomical structure contained in the x-ray image based on a stored model of anatomical structures. Once the 360 degree spin is completed, a 3-D image volume from the x-ray image set is created. The identification and segmentation information derived from the x-ray image is then added to the created 3-D image volume.

Detector module designs for radiographic imaging include first and second layers of scintillator rods or pixel arrays oriented in first and second directions. The first and second directions are transversely oriented to define a light sharing region between the first and second layers. Encoding features may be disposed in, on or between the first and second layers, and configured to modulate propagation of optical signals therealong or therebetween.