Abstract: [Problems] Provision of a system for assisting diagnosis/treatment of stroke which can easily provide supportive information so that the type of stroke can be determined appropriately and corresponding treatment strategy can be implemented. [Solutions] When the device for assisting diagnosis/treatment of stroke 101 acquires information of CT images, DWI, ADCmap, and MRA images indicating state of stroke from the device for providing information about state of stroke 103, it uses the acquired information of images and the information about laboratory findings to determine the type of stroke in a unit of stroke type determiner trained to use the predetermined information of images and the predetermined information about laboratory findings to determine the type of stroke corresponding thereto.

Abstract: Utilizing random variation (repeated positioning error) when reciprocating operation is repeatedly performed in which a stage is moved by (+x, +y) pulses toward an arbitrary position perpendicular to an optical axis of X-rays extending from an X-ray source to an X-ray detector, and then, is moved from there by (?x, ?y) pulses, an image group of images obtained by moving in parallel to each other is acquired, and an image processing unit finds a deviation between the images, and acquires an input image group in which each of the images has the deviation at a subpixel level. The image processing unit executes a reconstruction processing, using the input image group in which each of the images has the deviation at the subpixel level to generate a super-resolution image.

Abstract: Utilizing random variation (repeated positioning error) when reciprocating operation is repeatedly performed in which a stage is moved by (+x, +y) pulses toward an arbitrary position perpendicular to an optical axis of X-rays extending from an X-ray source to an X-ray detector, and then, is moved from there by (?x, ?y) pulses, an image group of images obtained by moving in parallel to each other is acquired, and an image processing unit finds a deviation between the images, and acquires an input image group in which each of the images has the deviation at a subpixel level. The image processing unit executes a reconstruction processing, using the input image group in which each of the images has the deviation at the subpixel level to generate a super-resolution image.

Abstract: When performing CT imaging while maintaining a state in which a rotational axis Ax and an irradiation axis (optical axis) intersect obliquely, the X-ray CT apparatus 1 of the present invention can make assessments from a group of cross-sectional images resulting from provisional CT imaging, so even an unskilled person can determine a specific cross-sectional image with high precision, and can further determine the CT imaging conditions so that the cross-sectional image is positioned in the center. In addition, by performing main imaging by narrowing the target field from provisional CT imaging, CT imaging can be performed without the portion to be viewed deviating from the field of view. As a result, the operator can perform CT imaging without repeating a process of trial and error involving performing CT imaging while changing the CT imaging conditions, and CT imaging can be performed efficiently without requiring skill.

Abstract: When performing CT imaging while maintaining a state in which a rotational axis Ax and an irradiation axis (optical axis) intersect obliquely, the X-ray CT apparatus 1 of the present invention can make assessments from a group of cross-sectional images resulting from provisional CT imaging, so even an unskilled person can determine a specific cross-sectional image with high precision, and can further determine the CT imaging conditions so that the cross-sectional image is positioned in the center. In addition, by performing main imaging by narrowing the target field from provisional CT imaging, CT imaging can be performed without the portion to be viewed deviating from the field of view. As a result, the operator can perform CT imaging without repeating a process of trial and error involving performing CT imaging while changing the CT imaging conditions, and CT imaging can be performed efficiently without requiring skill.

Abstract: A display image formation unit reads image data according to a designated condition from an image data storage unit to form a phase image, a drawing color setting unit colorizes a phase image according to a color scale in which a phase value in the vicinity of 0 is associated with black, a phase value in a positive direction is associated with a predetermined color other than black, and a phase value in a negative direction is associated with another color other than black. In an area where no cell exists on a medium, the phase value becomes almost 0, so that the background area of the cell on the colorized phase image becomes almost black and the cell is depicted in a color other than black.