Abstract: In a radiation detector, elements that detect radiation and generate charges are arranged in a matrix form. The radiation detector selects and reads out charges, which correspond to a dose of the radiation, row by row at predetermined periods. The radiation detector starts selection of rows from a first row without waiting for completion of readout of one frame which is a period where selection of rows from the first row to a last row is completed.

Abstract: The liquid crystal display device (100) according to the present invention performs display in a stereoscopic display mode. In each of the plurality of pixels in the liquid crystal display device (100), left-eye image data and right-eye image data are alternately written every two successive vertical scanning periods. Each of the plurality of pixels exhibits the same polarity over the two vertical scanning periods in which left-eye image data is written, and exhibits the same polarity over the two vertical scanning periods in which the right-eye image data is written. Accordingly, the liquid crystal display device (100) performs stereoscopic display with suppressed display unevenness.

Abstract: In an X-ray CT device, the scan conditions of the device are set, a three-dimensional X-ray passage length model of the body being examined is generated from a scanogram image of the body, the control pattern of the tube current is automatically set on the basis of the scan conditions and the three-dimensional passage length model, and the dose which will be given will be calculated and displayed on the basis of the control pattern of the tube current, and three-dimensional CT value model data of the body generated on the basis of a standard human body. The scanogram image of the body and the control pattern of the tube current are displayed next to each other or overlap to allow an operator to edit the control pattern while viewing the body, so that a suitable tube current can be set.

Abstract: An X-ray CT apparatus including an X-ray source for applying X-rays to an object, an X-ray detector arranged to face the X-ray source for determining the amount of transmitted X-rays of the object as projection data, basic-data acquisition means for acquiring response data of the projection data as basic data with no object present in advance every time the image of the object is acquired, analyzing means for analyzing an afterglow component of the acquired basic data into a plurality of time constants and their component ratios, storage means for storing the analyzed time constants and component ratios, correcting means for extracting an afterglow component of the projection data on the basis of the stored time constants and component ratios during radiography of the object and removing the extracted afterglow component of the projection data from the projection data to produce corrected projection data, reconstructing means for reconstructing an image using the produced corrected projection data, and displa

Abstract: An X-ray CT apparatus including an X-ray source for applying X-rays to an object, an X-ray detector arranged to face the X-ray source for determining the amount of transmitted X-rays of the object as projection data, basic-data acquisition means for acquiring response data of the projection data as basic data with no object present in advance every time the image of the object is acquired, analyzing means for analyzing an afterglow component of the acquired basic data into a plurality of time constants and their component ratios, storage means for storing the analyzed time constants and component ratios, correcting means for extracting an afterglow component of the projection data on the basis of the stored time constants and component ratios during radiography of the object and removing the extracted afterglow component of the projection data from the projection data to produce corrected projection data, reconstructing means for reconstructing an image using the produced corrected projection data, and displa

Abstract: A medical apparatus (130) transmits a data file to a computer (100) for maintenance. The maintenance computer (100) stores the received file and transmits operation image information fetched from the medical apparatus (13) together with the stored data file to a computer (110) for support. The support computer (110) transmits support information to the maintenance computer (100) in accordance with the received data file and the operation image information. Thus, it is possible to perform correct diagnosis of the medical apparatus.

Abstract: In an X-ray CT device, the scan conditions of the device are set, a three-dimensional X-ray passage length model of the body being examined is generated from a scanogram image of the body, the control pattern of the tube current is automatically set on the basis of the scan conditions and the three-dimensional passage length model, and the dose which will be given will be calculated and displayed on the basis of the control pattern of the tube current, and three-dimensional CT value model data of the body generated on the basis of a standard human body. The scanogram image of the body and the control pattern of the tube current are displayed next to each other or overlap to allow an operator to edit the control pattern while viewing the body, so that a suitable tube current can be set.

Abstract: Before a CT scan for a patient, a model that shows transmission lengths of the patient at rotation angles of an X-ray source is stored in a memory. At the CT scan, X-ray tube currents are controlled according to the transmission lengths at the rotation angles in order to apply X-rays to the patient. The three-dimensional model is homogenous and its material is similar to that of the patient's body, and transmission lengths of the three-dimensional model are converted into those of the patient. The model is acquired by a scannography in a single direction or a CT helical scanning with a small X-ray dose. This reduces the X-ray dose applied to the patient.

Abstract: Radiation is generated toward a patient. A radiographic region of the radiation covers a predetermined field-of-view. Both of a stereotactic radiation producing filter and a radiographic radiation producing filter are transported in such a way that the stereotactic radiation producing filter and the radiographic radiation producing filter sequentially intercept the beam axis between the patient and a generation position for the radiation. When the stereotactic radiation producing filter is located on the beam axis, it forms the radiation into radiation required for stereotactic radiosurgery. When the radiographic radiation producing filter is located on the beam axis, it forms the radiation into radiation required for radioscopy. Radiation present within the radiographic region is detected with employment of a radiation detecting unit positioned opposite to the generation position of the radiation with respect to the patient.