Abstract: To provide an X-ray detector facilitating the installing and replacement work of a module while reducing the possibility of breakage. An X-ray detector 50 detecting X-ray image data for each detection module includes: a detection module 7 provided with a protruding frame on a back side of a detection device detecting X-rays; and a guide frame 12 fitting into the protruding frame and removably supporting the detection device, wherein the guide frame 12 fixes the position of the detection device relative to the guide frame 12 by fitting. Therefore, fitting the protruding frame 8 into the guide frame 12 enables precise and easy installation/removal of the detection module. That is a detection module can be newly installed onto the guide frame without interfering each other with adjacent detection modules already installed while minimizing a space therebetween.

Abstract: There is provided a radiation detector that appropriately corrects an offset within a minute read cell without increasing area while achieving high-speed measurement at a high counting rate. A radiation detector 100 having a plurality of single-photon-counting imaging cells includes, for each imaging cell, a photodiode 3 which is applied with a reverse bias voltage and generates a current signal in response to incidence of radiation, a previous-stage DA converter d1 configured to correct an input signal based on the current signal generated by the photodiode 3, an amplifier k2 configured to amplify the signal corrected by the previous-stage DA converter d1, a subsequent-stage DA converter d2 configured to correct a charge signal amplified by the amplifier k2, a wave height discriminator 9 configured to discriminate output signals based on the signal corrected by the subsequent-stage DA converter d2, and a counter 10 configured to count the discriminated signals.

Abstract: There is provided a radiation detector that appropriately corrects an offset within a minute read cell without increasing area while achieving high-speed measurement at a high counting rate. A radiation detector 100 having a plurality of single-photon-counting imaging cells includes, for each imaging cell, a photodiode 3 which is applied with a reverse bias voltage and generates a current signal in response to incidence of radiation, a previous-stage DA converter d1 configured to correct an input signal based on the current signal generated by the photodiode 3, an amplifier k2 configured to amplify the signal corrected by the previous-stage DA converter d1, a subsequent-stage DA converter d2 configured to correct a charge signal amplified by the amplifier k2, a wave height discriminator 9 configured to discriminate output signals based on the signal corrected by the subsequent-stage DA converter d2, and a counter 10 configured to count the discriminated signals.

Abstract: There is provided a radiation detector which shortens the data read time to outside in accordance with the necessity to increase the frame rate. A radiation detector 100 having a plurality of single-photon-counting imaging cells, including an imaging cell 1 configured to generate a detection signal in accordance with the intensity of radiation, a digitization circuit 5 configured to digitize the detection signal, a data read structure 11 configured to count the digitized detection signal and to keep the result as a data bit, and a send-out register 13 configured to control the input of a predetermined data bit output from the data read structure 11 by a data shift in accordance with a first clock Pck, to keep the input data bit as a result of the control, and to send out the kept data bit by a data shift in accordance with a second clock Sck.

Abstract: To provide an X-ray detector facilitating the installing and replacement work of a module while reducing the possibility of breakage. An X-ray detector 50 detecting X-ray image data for each detection module includes: a detection module 7 provided with a protruding frame on aback side of a detection device detecting X-rays; and a guide frame 12 fitting into the protruding frame and removably supporting the detection device, wherein the guide frame 12 fixes the position of the detection device relative to the guide frame 12 by fitting. Therefore, fitting the protruding frame 8 into the guide frame 12 enables precise and easy installation/removal of the detection module. That is a detection module can be newly installed onto the guide frame without interfering each other with adjacent detection modules already installed while minimizing a space therebetween.

Abstract: An X-ray detector is connected to a large number of detector modules connected in series. The X-ray detector detects X-ray image data for each detection module, each module synchronously reading X-ray image data detected by itself based on an internal clock ?, each module transferring the read X-ray image data one after another. Each of the detection modules receives the transferred X-ray image data, and resynchronizes the received X-ray image data by using the internal clock, and transfers the same together with the detected X-ray image data. This enables arranging the detection module at an arbitrary position without a change in the method of transferring data for each measurement or without a load on a control device.