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    • 6. 发明授权
    • Method and system for collecting image data from image data collection range including periodically moving part
    • 从图像数据收集范围收集图像数据的方法和系统,包括周期性移动部分
    • US08055045B2
    • 2011-11-08
    • US10593359
    • 2005-03-11
    • Hiroto KokubunOsamu MiyazakiTetsuo Nakazawa
    • Hiroto KokubunOsamu MiyazakiTetsuo Nakazawa
    • G06K9/00
    • A61B6/541A61B6/032A61B6/5264
    • A method includes a periodic motion data input step S208 of receiving input of periodic motion data indicating changes of the periodic motion with time in an object to be examined who is a target of image data collection, a step S214 of estimating fluctuations in the time resolution of the image data with time based on the periodic motion data, designating an image collection range in the object, and adjusting the collection position of the image data such that the image data is collected in the image collection range at a suitable time of image data collection, the estimated time resolution being set in a predetermined suitable range, and an image data collection position control step S216 of relatively moving at least a part of the image data collection range and the collection position of the image data such that the part of the range and the position are superimposed on each other within a time when the image data of the image data collection range has a time resolution within the desired range based on the image data collection conditions.
    • 一种方法包括周期性运动数据输入步骤S208,其接收指示作为图像数据收集目标的被检测对象中的周期性运动随时间的变化的周期运动数据的输入;估计时间分辨率的波动的步骤S214 基于周期运动数据的图像数据随时间的变化,指定对象中的图像采集范围,以及调整图像数据的收集位置,使得图像数据在图像数据的合适时间被收集在图像采集范围内 将预定时间分辨率设置在预定的适当范围内的图像数据收集位置控制步骤S216,相对移动图像数据收集范围的至少一部分和图像数据的收集位置,使得部分 在图像数据收集范围的图像数据具有时间分辨率的时间内,位置彼此叠加 基于图像数据收集条件的期望范围。
    • 7. 发明授权
    • Compton camera device
    • 康普顿相机设备
    • US07750308B2
    • 2010-07-06
    • US12304284
    • 2007-06-11
    • Takashi ShirahataRyota KoharaTetsuo NakazawaOsamu Miyazaki
    • Takashi ShirahataRyota KoharaTetsuo NakazawaOsamu Miyazaki
    • G01T1/20
    • G01T1/1642A61B6/4258
    • A Compton camera device according to the invention includes first means for reading coordinate data of a scattering point of a quantum ray detected by a pre-stage detector for each Compton scattering event, second means for reading coordinate data of a reaching point of the Compton-scattered quantum ray detected by a post-stage detector for each Compton scattering event, and third means for calculating a measurement accuracy of the scattered quantum ray by the first and second means for each Compton scattering event, calculating a statistical quantity of the quantum ray for each calculated measurement accuracy, and outputting the calculated statistical quantity to image reconstruction means.
    • 根据本发明的康普顿相机装置包括用于读取由每个康普顿散射事件由前级检测器检测到的量子射线的散射点的坐标数据的第一装置,用于读取康普顿散射事件的到达点的坐标数据的第二装置, 用于每个康普顿散射事件由后级检测器检测的散射量子射线;以及第三装置,用于通过第一和第二装置针对每个康普顿散射事件计算散射量子射线的测量精度,计算量子射线的统计量 每个计算出的测量精度,并将计算的统计量输出到图像重建装置。
    • 8. 发明授权
    • X-ray CT device
    • X射线CT装置
    • US07426255B2
    • 2008-09-16
    • US10544907
    • 2004-02-13
    • Osamu MiyazakiTetsuo NakazawaHiroto Kokubun
    • Osamu MiyazakiTetsuo NakazawaHiroto Kokubun
    • H05G1/60
    • A61B6/032A61B6/027A61B6/5288A61B6/542
    • An X-ray CT apparatus comprises: motion information acquisition means that acquires periodical motion information on a motion portion of an object to be examined; a detector that rotates together with an X-ray source and detects X-rays applied to the object from the X-ray source to acquire projection data per collection region; and reconstruction means that processes the projection data resulting from the detector to reconstruct a tomogram of the object, wherein the X-ray CT apparatus further includes delay time determination means that determines a delay time by adding a time width of the collection region and a processing delay time in the X-ray CT apparatus and a time interval from the moment when the phase of the measured periodical motion information is matched with the phase of the rotation period of the X-ray CT apparatus to the moment when they are matched next time, and collection means that correlates, with the periodical motion information obtained by the motion information acquisition means, and successively collects the projection data obtained from the detector, with the reconstruction means starting reconstruction of the tomogram after the delay time.
    • X射线CT装置包括:运动信息获取装置,其获取关于待检查对象的运动部分的周期运动信息; 检测器,其与X射线源一起旋转,并且检测从X射线源施加到物体的X射线以获取每个收集区域的投影数据; 并且重建装置处理由检测器产生的投影数据,以重构物体的断层图像,其中,所述X射线CT装置还包括延迟时间确定装置,其通过加入所述收集区域的时间宽度和处理来确定延迟时间 X射线CT装置的延迟时间和从测定的周期运动信息的相位与X射线CT装置的旋转周期的相位相匹配的时刻到下一次匹配的时刻 以及与由运动信息获取装置获得的周期运动信息相关联的收集装置,并且连续地收集从检测器获得的投影数据,重建装置在延迟时间之后开始重建断层图像。