Tomography system
    2.
    发明授权
    Tomography system 有权
    断层扫描系统

    公开(公告)号:US09572543B2

    公开(公告)日:2017-02-21

    申请号:US14573255

    申请日:2014-12-17

    CPC classification number: A61B6/5258 A61B6/025 A61B6/032 A61B6/5205 A61B6/585

    Abstract: A tomography system includes a radiation source, a radiation detector, a subject table, an imaging unit and a reconstruction unit. The imaging unit obtains a projection image a predetermined number of times while changing a positional relationship of the radiation source and the radiation detector. The reconstruction unit generates a tomogram of a subject using the projection image obtained by the imaging unit. The reconstruction unit includes a correction unit. The correction unit performs correction processing to (i) create a profile of a pixel signal value from a no-subject-included projection image obtained by the imaging unit without the subject on the subject table and (ii) correct, on the basis of the created profile, a subject-included projection image obtained by the imaging unit with the subject on the subject table or a detection probability used in generating the tomogram.

    Abstract translation: 断层摄影系统包括辐射源,放射线检测器,被摄体台,成像单元和重建单元。 成像单元在改变辐射源和放射线检测器的位置关系的同时获得预定次数的投影图像。 重建单元使用由成像单元获得的投影图像来生成被摄体的断层图像。 重建单元包括校正单元。 校正单元执行校正处理,以(i)从无成像单元获得的无人物投影图像创建像素信号值的轮廓,而不在被摄体表上的被摄体,并且(ii)基于 创建的轮廓,由成像单元与被摄体在被摄体台上获得的被摄体投影图像或用于产生断层图像的检测概率。

    Image judgment device, image judgment method, and storage medium

    公开(公告)号:US11803970B2

    公开(公告)日:2023-10-31

    申请号:US17127066

    申请日:2020-12-18

    Inventor: Takuya Yamamura

    Abstract: Disclosed is an image judgment device including a hardware processor that functions as an image acquirer that acquires image data of a medical image that is obtained by radiographing of a part including a region to be diagnosed of a patient, a segmentation unit that extracts an anatomical structure from the medical image to generate an extracted image, an image converter that performs image conversion on the extracted image to generate a converted image; a feature value extractor that calculates a feature value from the extracted image and/or the converted image by using a result of machine learning; and a judgment unit that judges whether the medical image is taken with positioning appropriate for diagnosis based on the feature value by using a result of machine learning concerning feature values.

    Radiation image processing apparatus

    公开(公告)号:US10572981B2

    公开(公告)日:2020-02-25

    申请号:US15934385

    申请日:2018-03-23

    Abstract: An image processing apparatus includes the following. A hardware processor decomposes a signal value of input image data into band-limited signals having different frequency bands from each other. A storage stores pieces of preset data. Each of the pieces of preset data comprises tables to associate frequency with a response and to prescribe different response properties from each other. The hardware processor selects a piece of preset data from the pieces of preset data stored in the storage, converts the decomposed band-limited signals on a basis of tables in the selected piece of preset data, reconstructs the converted band-limited signals into enhanced image data, and generates a frequency-enhanced image through addition of the enhanced image data which is multiplied by a predetermined enhancement coefficient to the input image data.

    Radiation image capturing apparatus

    公开(公告)号:US09967485B2

    公开(公告)日:2018-05-08

    申请号:US15622037

    申请日:2017-06-13

    CPC classification number: H04N5/361 G01T1/2928 H04N5/32 H04N5/357 H04N5/378

    Abstract: A radiation image capturing apparatus includes scan lines, signal lines, radiation detection elements, bias lines, a readout IC, a control unit and a noise detection unit. The detection elements generate electric charges by receiving radiation. The readout IC reads respective image data based on the respective electric charges. The control unit controls at least the readout IC. At the time when each image data is read, the detection unit outputs data based on voltage noise in reverse bias voltage applied to the detection elements via the bias lines and/or voltage noise in off voltage applied to the scan lines. The control unit estimates an offset component in the output data, calculates noise data based on the output data and the offset component and subtracts the noise data from the image data, thereby generating corrected image data.

    RADIATION IMAGE PROCESSING APPARATUS
    6.
    发明申请

    公开(公告)号:US20180286021A1

    公开(公告)日:2018-10-04

    申请号:US15934385

    申请日:2018-03-23

    CPC classification number: G06T5/004 G06T5/003 G06T5/10 G06T2207/20016

    Abstract: An image processing apparatus includes the following. A hardware processor decomposes a signal value of input image data into band-limited signals having different frequency bands from each other. A storage stores pieces of preset data. Each of the pieces of preset data comprises tables to associate frequency with a response and to prescribe different response properties from each other. The hardware processor selects a piece of preset data from the pieces of preset data stored in the storage, converts the decomposed band-limited signals on a basis of tables in the selected piece of preset data, reconstructs the converted band-limited signals into enhanced image data, and generates a frequency-enhanced image through addition of the enhanced image data which is multiplied by a predetermined enhancement coefficient to the input image data.

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