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    X-ray computed tomography apparatus and control method
    1.
    发明授权
    X-ray computed tomography apparatus and control method 有权

    公开(公告)号：US10217246B2

    公开(公告)日：2019-02-26

    申请号：US14747283

    申请日：2015-06-23

    申请人： Toshiba Medical Systems Corporation

    发明人： Takuzo Takayama ,  Yasuo Saito ,  Emi Tamura

    IPC分类号： G06K9/00 ,  G06T11/00 ,  A61B6/03 ,  A61B6/00 ,  G01N23/046 ,  G01T1/16 ,  H05G1/08

    摘要： An X-ray computed tomography (CT) apparatus includes a detector, and processing circuitry. The detector is configured to output, at each incidence of an X-ray photon, a signal enabling measurement of an energy value of the X-ray photon. Processing circuitry is configured to estimate an energy range to be used for imaging based on an imaging condition and to reconstruct X-ray CT image data using counting information to which an energy value within the energy range is associated among pieces of counting information that are collected from individual signals output by the detector at each incidence of an X-ray photon that has been irradiated from an X-ray tube and has passed through a subject, and in which a counting value and an energy value of X-ray photons incident to the detector are associated with each other.

    NUCLEAR MEDICINE IMAGING APPARATUS AND NUCLEAR MEDICINE IMAGING METHOD
    4.
    发明申请
    NUCLEAR MEDICINE IMAGING APPARATUS AND NUCLEAR MEDICINE IMAGING METHOD 有权
    核医学成像装置与核医学成像方法

    公开(公告)号：US20130134311A1

    公开(公告)日：2013-05-30

    申请号：US13751344

    申请日：2013-01-28

    申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

    发明人： Takuzo Takayama

    IPC分类号： G01T1/164

    CPC分类号： G01T1/164 ,  G01T1/161 ,  G01T1/1647 ,  G01T1/2985

    摘要： In the nuclear medicine imaging apparatus according to the one embodiment, the ADC converts the output data of each of the photodetectors to digital data. The counting information collecting unit collects counting results from the digital data, and the counting information storage unit stores the counting result in association with the digital data. The coincidence counting information generating unit generates coincidence counting information. The image reconstructing unit reconstructs a PET image, based on the coincidence counting information. The time correction data stores a correction time for each of the photodetectors. The system controlling unit controls to correct the detection time of the gamma rays in the digital data associated with each piece of the counting information by use of the correction time, and to generate new coincidence counting information. The system controlling unit controls to reconstruct a new nuclear medicine image, based on the new coincidence counting information generated.

    摘要翻译： 在根据一个实施例的核医学成像装置中，ADC将每个光电检测器的输出数据转换为数字数据。 计数信息收集单元从数字数据收集计数结果，并且计数信息存储单元与数字数据相关联地存储计数结果。 符合计数信息生成部生成符号计数信息。 图像重建单元基于重合计数信息来重建PET图像。 时间校正数据存储每个光电检测器的校正时间。 系统控制单元通过使用校正时间来控制与每个计数信息相关联的数字数据中的伽马射线的检测时间，并产生新的重合计数信息。 系统控制单元根据生成的新的重合计数信息来控制重建新的核医学图像。

    PET-MRI apparatus
    5.
    发明授权
    PET-MRI apparatus 有权

    公开(公告)号：US10067207B2

    公开(公告)日：2018-09-04

    申请号：US14522024

    申请日：2014-10-23

    申请人： Toshiba Medical Systems Corporation

    发明人： Kazuya Okamoto ,  Takuzo Takayama ,  Hitoshi Yamagata

    IPC分类号： A61B5/055 ,  G01R33/48 ,  G01T1/16 ,  A61B5/00 ,  A61B6/03 ,  G01R33/30 ,  G01R33/385

    摘要： A positron emission tomography (PET)-magnetic resonance imaging (MRI) apparatus according to an embodiment includes a gantry having a static magnetic field magnet, a gradient coil, and a radio frequency coil, a PET detector, and a moving mechanism. The static magnetic field magnet generates a static magnetic field in a bore having an approximately cylindrical shape. The gradient coil is disposed on an inner circumference side of the static magnetic field magnet and applies a gradient magnetic field to an object disposed in the bore. The radio frequency coil is disposed on an inner circumference side of the gradient coil and applies a radio frequency magnetic field to the object. The PET detector detects gamma rays emitted from a positron-emitting radionuclide injected into the object. The moving mechanism causes the PET detector in the gantry along the axial direction of the bore.

    PHOTON-COUNTING TYPE X-RAY COMPUTED TOMOGRAPHY APPARATUS AND METHOD
    9.
    发明申请
    PHOTON-COUNTING TYPE X-RAY COMPUTED TOMOGRAPHY APPARATUS AND METHOD 有权
    光子计数型X射线计算机图像设备和方法

    公开(公告)号：US20150198725A1

    公开(公告)日：2015-07-16

    申请号：US14596457

    申请日：2015-01-14

    申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

    发明人： Emi TAMURA ,  Yasuo Saito ,  Takuzo Takayama ,  Hiroaki Miyazaki ,  Hiroaki Nakai

    IPC分类号： G01T1/24 ,  G01N23/04

    CPC分类号： G01N23/046 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  G01T1/17 ,  G01T1/2985

    摘要： A photon-counting type X-ray computed tomography apparatus that comprises a high-voltage generator to generate a voltage signal, an X-ray tube to emit X-rays when the X-ray tube receives the voltage signal from the high-voltage generator, an X-ray detector to detect photons derived from the X-rays emitted from the X-ray tube, and circuitry to count a number of the detected photons with respect to a plurality of energy bands, detect a number of photons in a first energy band that exceeds an energy level corresponding to a voltage value of the voltage signal, and changing a number of photons at a second energy band based on the detected number of photons in the first energy band, to correct for operational limitations of the X-ray detector.

    摘要翻译： 一种光子计数型X射线计算机断层摄影装置，其包括产生电压信号的高压发生器，当X射线管从高压发生器接收到电压信号时，X射线管发射X射线 ，用于检测从X射线管发射的X射线衍生的光子的X射线检测器和相对于多个能带对多个检测到的光子进行计数的电路，检测第一 能量带，其超过与电压信号的电压值相对应的能级，并且基于检测到的第一能带中的光子数量改变第二能带上的光子数量，以校正X射线的操作限制， 射线探测器。