Abstract: An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.

Abstract: A system control unit causes a diagnosis monitor to display a plurality of sample images generated by changing one or more image processing parameters used in image processing of an X-ray image. When an operator designates a mixing ratio, at which the sample images are mixed, after the plurality of sample images are displayed on the diagnosis monitor, the system control unit sets one or more image processing parameters to be used when image processing of an X-ray image is performed based on the designated mixing ratio. An image processing unit performs image processing of an X-ray image input from an image input unit based on the set image processing parameter.

Abstract: A radiation image processing apparatus which processes non-spiral projection data obtained by radiation imaging performed by rotating a radiation generator and a two-dimensional radiation detector relative to a subject reconstructs the non-spiral projection data into first volume data subjected to an averaging process in a direction of a rotation axis of the rotation and second volume data not subjected to the averaging process. The radiation image processing apparatus performs planar reconstruction calculation using the first volume data to generate a cross section image in a first plane perpendicular to the direction of the rotation axis and performs planar reconstruction calculation using the second volume data to generate a cross section image in a second plane parallel to the direction of the rotation axis. The resulting cross section images are displayed on a display apparatus.

Abstract: A system control unit causes a diagnosis monitor to display a plurality of sample images generated by changing one or more image processing parameters used in image processing of an X-ray image. When an operator designates a mixing ratio, at which the sample images are mixed, after the plurality of sample images are displayed on the diagnosis monitor, the system control unit sets one or more image processing parameters to be used when image processing of an X-ray image is performed based on the designated mixing ratio. An image processing unit performs image processing of an X-ray image input from an image input unit based on the set image processing parameter.

Abstract: A radiation image processing apparatus which processes non-spiral projection data obtained by radiation imaging performed by rotating a radiation generator and a two-dimensional radiation detector relative to a subject reconstructs the non-spiral projection data into first volume data subjected to an averaging process in a direction of a rotation axis of the rotation and second volume data not subjected to the averaging process. The radiation image processing apparatus performs planar reconstruction calculation using the first volume data to generate a cross section image in a first plane perpendicular to the direction of the rotation axis and performs planar reconstruction calculation using the second volume data to generate a cross section image in a second plane parallel to the direction of the rotation axis. The resulting cross section images are displayed on a display apparatus.

Abstract: An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.

Abstract: A radiation image processing apparatus which processes non-spiral projection data obtained by radiation imaging performed by rotating a radiation generator and a two-dimensional radiation detector relative to a subject reconstructs the non-spiral projection data into first volume data subjected to an averaging process in a direction of a rotation axis of the rotation and second volume data not subjected to the averaging process. The radiation image processing apparatus performs planar reconstruction calculation using the first volume data to generate a cross section image in a first plane perpendicular to the direction of the rotation axis and performs planar reconstruction calculation using the second volume data to generate a cross section image in a second plane parallel to the direction of the rotation axis. The resulting cross section images are displayed on a display apparatus.

Abstract: An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.

Abstract: An X-ray image processing apparatus includes a site information determination unit configured to determine, based on discrete site information, continuous site information to be obtained by radiographing a moving image, an information acquisition unit configured to extract, from the discrete site information, image construction information, image processing method information, and X-ray exposure control method information, a computation unit configured to compute processing information about a site located between positions represented by the discrete site information using the information extracted by the information acquisition unit, an image processing unit configured to perform image processing based on the processing information which is computed by the computation unit, and an X-ray exposure control unit configured to perform X-ray exposure based on the processing information which is computed by the computation unit.

Abstract: An image processing apparatus applying image processing corresponding to a predetermined imaging region of a subject of an image obtained by capturing the imaging region to the image includes an acquisition unit configured to acquire classification information obtained by classifying a plurality of imaging regions according to characteristics of image processing corresponding to each of the imaging regions, an identification unit configured to identify, after identifying which of the groups the imaging region of the image corresponds to, which of the plurality of the imaging regions included in the corresponding group the imaging region of the image corresponds to, based on the image and the classification information, and a processing unit configured to apply the image processing corresponding to the identified imaging region to the image.

Abstract: To perform as high-accuracy as possible a correction for a body movement for reducing an artifact occurring in a case of creating a tomographic image from an X-ray projected image, the coordinates of the respective corresponding points are acquired as between the projected images of which the projected angles overlap each other (e.g., 0° and 360° ), and a geometric transformation parameter is acquired through affine transformation or the like by using the set of the acquired coordinates. When an estimated amount of the acquired parameter is equal to or larger than a predetermined amount, the geometric transformation parameter for geometric correction is determined by using the acquired geometric transformation parameter, the geometric transformation (correction of body movement) is executed by using the determined geometric transformation parameter, and the tomographic image is created by using the corrected projected images.

Abstract: A system control unit causes a diagnosis monitor to display a plurality of sample images generated by changing one or more image processing parameters used in image processing of an X-ray image. When an operator designates a mixing ratio, at which the sample images are mixed, after the plurality of sample images are displayed on the diagnosis monitor, the system control unit sets one or more image processing parameters to be used when image processing of an X-ray image is performed based on the designated mixing ratio. An image processing unit performs image processing of an X-ray image input from an image input unit based on the set image processing parameter.

Abstract: An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.

Abstract: An X-ray image processing apparatus includes a site information determination unit configured to determine, based on discrete site information, continuous site information to be obtained by radiographing a moving image, an information acquisition unit configured to extract, from the discrete site information, image construction information, image processing method information, and X-ray exposure control method information, a computation unit configured to compute processing information about a site located between positions represented by the discrete site information using the information extracted by the information acquisition unit, an image processing unit configured to perform image processing based on the processing information which is computed by the computation unit, and an X-ray exposure control unit configured to perform X-ray exposure based on the processing information which is computed by the computation unit.

Abstract: Time-series data over the range of a projection angle is created from a sinogram. Then, time-series data made up of opposite data corresponding to the time-series data over the range of a projection angle is created. Based on the amount of the error between the two types of time-series data, the amount of position deviation of a revolution axis is calculated.

Abstract: A radiation image processing apparatus which processes non-spiral projection data obtained by radiation imaging performed by rotating a radiation generator and a two-dimensional radiation detector relative to a subject reconstructs the non-spiral projection data into first volume data subjected to an averaging process in a direction of a rotation axis of the rotation and second volume data not subjected to the averaging process. The radiation image processing apparatus performs planar reconstruction calculation using the first volume data to generate a cross section image in a first plane perpendicular to the direction of the rotation axis and performs planar reconstruction calculation using the second volume data to generate a cross section image in a second plane parallel to the direction of the rotation axis. The resulting cross section images are displayed on a display apparatus.

Abstract: To provide an image processing device and method capable of achieving a high-speed reconstruction process to a cone-beam CT image, an area necessary for reconstruction in a projection image is determined from a slice position to be reconstructed, and a convolution process is executed by using the determined area. Moreover, the slice position to be reconstructed is divided into plural blocks, the areas of the projection image corresponding thereto are cut out, and the processing unit is set for each block as local data of each block, and the set unit is allocated with respect to each operation, whereby parallel processes are executed.

Abstract: An image processing apparatus and method can perform gradation conversion of an image in which flatness of a pixel-value histogram of an image after gradation conversion is excellent, while using a specific gradation conversion function. A gradation conversion function represented using variables for specifying a gradation conversion characteristic is used. The values of the variables are determined based on flatness of a pixel-value histogram of an image obtained by converting an object image with the gradation conversion function. The object image is subjected to gradation conversion with the gradation conversion function determined by the determined values of the variables.

Abstract: To provide image processing device and method capable of achieving a high-speed reconstruction process to a cone beam CT image, an area necessary for reconstruction in a projection image is determined from a slice position to be reconstructed, a convolution process is executed by using the determined area. Moreover, the slice position to be reconstructed is divided into the plural blocks, the areas of the projection image corresponding thereto are cut out, and the processing unit is set for each block as local data of each block, and the set unit is allocated with respect to each operation, whereby parallel processes are executed.

Abstract: To provide image processing device and method capable of achieving a high-speed reconstruction process to a cone beam CT image, an area necessary for reconstruction in a projection image is determined from a slice position to be reconstructed, a convolution process is executed by using the determined area. Moreover, the slice position to be reconstructed is divided into the plural blocks, the areas of the projection image corresponding thereto are cut out, and the processing unit is set for each block as local data of each block, and the set unit is allocated with respect to each operation, whereby parallel processes are executed.