Abstract: An information processing apparatus that is communicably connected with another information processing apparatus, the information processing apparatus comprises: a processor configured to execute a program; and a storage device configured to store the program, the processor being configured to execute: acquisition processing of acquiring agreement information relating to the usage of subject eye image data of a patient by the other information processing apparatus; and transmission processing of transmitting the subject eye image data to the other information processing apparatus on the basis of the agreement information acquired by the acquisition processing.

Abstract: An information processing system comprises: an image acquisition device acquiring subject eye image data of a patient; and a first information processing device communicating with the image acquisition device and storing the image data, the image acquisition device transmits, to the first information processing device, the image data and first transmission data including additional information used to identify an image diagnosis device performing image diagnosis on the image data, the first information processing device: stores the image data when receiving the first transmission data from the image acquisition device; identifies, based on the additional information, a first image diagnosis device performing a first image diagnosis on the image data and/or a second image diagnosis device performing a second image diagnosis differing from the first image diagnosis on the image data; and transmits second transmission data including the image data to the identified image diagnosis device.

Abstract: An information processing apparatus comprises: a processor configured to execute a program; and a storage device configured to store the program, the processor being configured to execute: obtaining processing of obtaining a diagnosis result of both eyes; generation processing of generating diagnosis result display information including a scale indicating a plurality of degrees of progresses related to a symptom, a first index indicating a degree of progress of a right eye based on a diagnosis result of the right eye, and a second index indicating a degree of progress of a left eye based on a diagnosis result of the left eye; and output processing of outputting the diagnosis result display information generated by the generation processing.

Abstract: An X-ray CT image reconstruction method includes turning a fan-shaped X-ray beam, which is thick and irradiated to a subject, about the subject, detecting projection data items concerning an X-ray beam, which is transmitted by the subject, with the X-ray beam turned by a plurality of successive angles of rotation, enhancing fan-beam data, which includes projection data items detected with the X-ray beam turned by the angles of rotation, so as to sharpen projection data contained in the fan-beam data and acquired along each projection line, producing parallel-beam data, which has values thereof defined along parallel projection lines, in relation to each angle of projection using the enhanced fan-beam data, and reconstructing an image using the parallel-beam data.

Abstract: A data acquisition device, which has an X-ray detector including a plurality of channel widths at which channels at its central portion are fine and channels at its peripheral portions are coarse or rough, and a plurality of data acquisition ranges including a data acquisition range wide in a channel direction and a data acquisition range narrow in the channel direction, and which is capable of performing switching among the data acquisition ranges for each data acquisition, is used to perform data acquisition on the channels fine at the central portion in the data acquisition range narrow in the channel direction, whereby an X-ray CT apparatus is provided which is capable of performing high-resolution imaging and brings about more satisfactory image quality.

Abstract: Tomography or X-ray CT fluoroscopy reduced in exposure to radiation in an X-ray CT apparatus or an X-ray CT fluoroscopic apparatus is to be substantialized. A channel-direction X-ray collimator or a beam forming X-ray filter is positionally controlled in the channel direction to carry out X-ray data acquisition while irradiation with X-rays limited to only the region of interest. Either the profile area of the whole subject is obtained or the profile area of the whole subject is predicted from views or scout images of irradiation of the whole subject out of X-ray projection data. Image reconstruction of views not irradiating the whole subject out of the collected X-ray projection data is carried out by predicting lacking parts from the profile area of the whole subject and making corrections accordingly.

Abstract: A data acquisition device, which has an X-ray detector including a plurality of channel widths at which channels at its central portion are fine and channels at its peripheral portions are coarse or rough, and a plurality of data acquisition ranges including a data acquisition range wide in a channel direction and a data acquisition range narrow in the channel direction, and which is capable of performing switching among the data acquisition ranges for each data acquisition, is used to perform data acquisition on the channels fine at the central portion in the data acquisition range narrow in the channel direction, whereby an X-ray CT apparatus is provided which is capable of performing high-resolution imaging and brings about more satisfactory image quality.

Abstract: An X-ray CT image reconstruction method includes turning a fan-shaped X-ray beam, which is thick and irradiated to a subject, about a subject, detecting projection data items concerning an X-ray beam, which is transmitted by the subject, with the X-ray beam turned by a plurality of successive angles of rotation, enhancing fan-beam data, which includes projection data items detected with the X-ray beam turned by the angles of rotation, so as to sharpen projection data contained in the fan-beam data and acquired along each projection line, producing parallel-beam data, which values thereof defined along parallel projection lines, in relation to each angle of projection using the enhanced fan-beam data, and reconstructing an image using the parallel-beam data.

Abstract: With the object of improving image quality while keeping short the time taken to reconstruct the first X-ray tomogram at the time of start of scanning in its real-time display mode, an X-ray CT apparatus having a rotary unit for causing an X-ray source and an X-ray detector for detecting X-rays from the X-ray source to rotate integrally around a subject, is provided with a full data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a full turn around the subject, a segment data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a turn by (180+&agr;) degrees, and a change-over device for counting the tomograms reconstructed after the start of scanning, and changing over between the full data reconstructing device and segment data reconstructing device according to the count.

Abstract: To provide a medical program for generating desired images, a medical information provider apparatus in a service centre send to a communication processor in a hospital as a client through a network a plurality of images each corresponding to a parameter setting value as the processing result of the program by differing the parameter setting values. The communication processor selects an image desired among a plurality of images and sends to the medical information provider apparatus the selection. The medical information provider apparatus then provides the communication processor in the hospital with a program having parameter settings corresponding to the selection by the client, so as to install in an image reconstructing device to execute.

Abstract: With the object of improving image quality while keeping short the time taken to reconstruct the first X-ray tomogram at the time of start of scanning in its real-time display mode, an X-ray CT apparatus having a rotary unit for causing an X-ray source and an X-ray detector for detecting X-rays from the X-ray source to rotate integrally around a subject, is provided with a full data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a full turn around the subject, a segment data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a turn by (180+&agr;) degrees, and a change-over device for counting the tomograms reconstructed after the start of scanning, and changing over between the full data reconstructing device and segment data reconstructing device according to the count.