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    • 12. 发明专利
    • X-ray ct apparatus
    • X射线CT装置
    • JP2012187137A
    • 2012-10-04
    • JP2011050565
    • 2011-03-08
    • Toshiba CorpToshiba Medical Systems Corp東芝メディカルシステムズ株式会社株式会社東芝
    • MATSUDA KEIJINAKAYAMA MICHITOSAGO TOMOHIDEOISHI HIROYUKINANBU SHUYAKANAMARU SHUNISO MACHIKOHASHIMOTO ATSUSHI
    • A61B6/03
    • PROBLEM TO BE SOLVED: To output signals by adjusting diversion of inclination among X-ray images generated based on sequentially collected signals when signals are sequentially collected.SOLUTION: The X-ray CT apparatus in this embodiment includes an X-ray source, an X-ray detector, a data collecting part, a reconstruction processing part, an angle calculation part, and an angle adjusting part. In the X-ray detector, detector elements for detecting X rays are arranged in a matrix of m rows and n columns. The data collecting part reads signals from the detector elements by column and by time division. The reconstruction processing part generates image data based on the signals from the detector elements in respective columns with the position of the X-ray source corresponding to the first detector element as a reference position. The angle calculation part calculates the difference in angle between the position of the X-ray source corresponding to the second detector element and the reference position. The angle adjusting part adjusts the diversion in a channel direction between the image corresponding to the first detector element and the image corresponding to the second detector element based on the calculated difference in angle.
    • 要解决的问题:当依次收集信号时,通过调整基于顺序收集的信号产生的X射线图像之中的倾斜度来输出信号。 解决方案:本实施例中的X射线CT装置包括X射线源,X射线检测器,数据采集部,重建处理部,角度计算部和角度调整部。 在X射线检测器中,用于检测X射线的检测器元件以m行和n列的矩阵排列。 数据采集​​部件通过列和时分从检测器元件读取信号。 重建处理部分基于来自相应列中的检测器元件的信号,以对应于第一检测器元件的X射线源的位置作为参考位置来生成图像数据。 角度计算部计算与第二检测元件对应的X射线源的位置与基准位置之间的角度差。 角度调整部基于计算出的角度,调整与第一检测元件对应的图像与对应于第二检测元件的图像之间的通道方向上的分流。 版权所有(C)2013,JPO&INPIT
    • 13. 发明专利
    • X-ray ct apparatus and control method of x-ray ct apparatus
    • X射线CT装置的X射线CT装置和控制方法
    • JP2007236777A
    • 2007-09-20
    • JP2006065996
    • 2006-03-10
    • Toshiba CorpToshiba Medical Systems Corp東芝メディカルシステムズ株式会社株式会社東芝
    • MATSUDA KEIJI
    • A61B6/03
    • PROBLEM TO BE SOLVED: To provide an x-ray CT apparatus which provides images in which the effect of artifacts are reduced.
      SOLUTION: Data collection sections 5A, 5B and 5C collect projection data at the same timing, and a relative position computing section 11 computes angle difference between x-ray detectors 4A, 4B and 4C on the basis of the number of views of the projection data and the number of views of a set value. A timing computation section 12 obtains the timing of data collection by the data collection sections 5B and 5C from the angle difference relative to the data collection section 5A. A scan control section 10 corrects the angle difference by making the data collection sections 5A, 5B and 5C collect the projection data in accordance with the timing and provides tomograms in which the effect of artifacts are reduced.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种提供其中减少伪影效果的图像的X射线CT装置。 解决方案:数据收集部分5A,5B和5C以相同的定时收集投影数据,并且相对位置计算部分11基于X射线检测器4A,4B和4C的视角数来计算x射线检测器4A,4B和4C之间的角度差 投影数据和设定值的视图数量。 定时计算部12从数据收集部5A的角度差求出数据收集部5B,5C的数据收集的定时。 扫描控制部分10通过使数据收集部分5A,5B和5C根据定时收集投影数据来校正角度差,并且提供其中减少效果的断层图像。 版权所有(C)2007,JPO&INPIT
    • 17. 发明专利
    • Medical image processing apparatus, and x-ray ct apparatus
    • 医疗图像处理装置和X射线CT装置
    • JP2014166348A
    • 2014-09-11
    • JP2014013152
    • 2014-01-28
    • Toshiba Corp株式会社東芝Toshiba Medical Systems Corp東芝メディカルシステムズ株式会社
    • MATSUDA KEIJI
    • A61B6/03
    • A61B6/5205A61B6/032A61B6/4233A61B6/54A61B6/585A61B6/586
    • PROBLEM TO BE SOLVED: To provide a medical image processing apparatus which accurately corrects captured image data captured in accordance with stability of an X-ray detector even in a condition where the temperature of the X-ray detector is not stable, and to provide an X-ray CT apparatus.SOLUTION: A medical image processing apparatus includes: an image-capturing instruction unit which instructs to perform image-capturing of a patient to acquire captured image data; a period determination unit which determines whether a time to capture an image of the patient by the instruction corresponds a first period in which a temperature of an X-ray detector is stable or corresponds a second period in which the temperature of the detector is not stable, before performing image-capturing of the patient; and a data correction part which corrects the acquired captured image data using normal time correction data when the image-capturing time corresponds the first period, while correcting the captured image data using emergency correction data when the image-capturing time corresponds the second period.
    • 要解决的问题:提供一种医疗图像处理装置,其即使在X射线检测器的温度不稳定的状态下,也能够根据X射线检测器的稳定性精确地校正捕获的图像数据, X射线CT装置。解决方案:医疗图像处理装置包括:图像捕获指令单元,其指示执行患者的图像捕获以获取捕获的图像数据; 一个周期确定单元,其确定是否通过该指令捕获患者的图像的时间对应于X射线检测器的温度稳定的第一周期或对应于检测器的温度不稳定的第二周期 在对患者进行图像捕获之前; 以及数据校正部分,当图像捕获时间对应于第一周期时,使用正常时间校正数据校正所获取的捕获图像数据,同时当图像捕获时间对应于第二周期时,使用紧急校正数据校正捕获的图像数据。
    • 19. 发明专利
    • X-ray ct apparatus
    • X射线CT装置
    • JP2014045816A
    • 2014-03-17
    • JP2012189161
    • 2012-08-29
    • Toshiba Corp株式会社東芝Toshiba Medical Systems Corp東芝メディカルシステムズ株式会社
    • MIYAMA KOICHINANBU SHUYAMATSUDA KEIJIISO MACHIKOKANAMARU SHUNUMEHARA TAKAYA
    • A61B6/03
    • PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus capable of equalizing a level of noise depending on a length of a wiring length from an X-ray detector to a DAS (Data Acquisition System) when creating a wide-coverage detector structure having a simultaneous collection system.SOLUTION: An X-ray CT apparatus includes: an X-ray source emitting X-rays; an X-ray detector detecting X-rays transmitted through a subject and converting the detected X-rays into electric signals; a detection module 58 mounted with conversion elements 60, 61, 62, 63 converting the converted electric signals into digital signals from analog signals; and an image processing part reconstructing a tomographic image of the subject from the digital signals converted by the conversion elements 60, 61, 62, 63. The detection module 58 has first and second boards 50, 51, 53, 54 partially formed with cutouts, and the conversion elements 61, 63 mounted on the first boards 50, 53 are provided oppositely to the cutouts of the second boards 51, 54.
    • 要解决的问题:提供一种能够在创建宽覆盖检测器结构时根据从X射线检测器到DAS(数据采集系统)的布线长度的长度来均衡噪声水平的X射线CT装置 具有同时收集系统。解决方案:X射线CT装置包括:X射线源发射X射线; X射线检测器检测通过被检体传播的X射线,并将检测到的X射线转换为电信号; 安装有转换元件60,61,62,63的检测模块58,其将转换的电信号转换成来自模拟信号的数字信号; 以及图像处理部,从由转换元件60,61,62,63转换的数字信号重建被摄体的断层图像。检测模块58具有部分地形成有切口的第一和第二板50,51,53,54, 并且安装在第一板50,53上的转换元件61,63与第二板51,54的切口相对地设置。
    • 20. 发明专利
    • X-ray ct apparatus
    • X射线CT装置
    • JP2007044496A
    • 2007-02-22
    • JP2006190706
    • 2006-07-11
    • Toshiba CorpToshiba Medical Systems Corp東芝メディカルシステムズ株式会社株式会社東芝
    • MATSUDA KEIJI
    • A61B6/03
    • PROBLEM TO BE SOLVED: To reduce the influence of scattered radiation originating from X-rays from the X-ray tube of the other pair in an multi-tube type X-ray CT apparatus including a plurality of pairs of X-ray tubes and detectors.
      SOLUTION: This X-ray CT apparatus is provided with the X-ray tubes 121 and 122, slit mechanisms 161 and 162, X-ray detectors 131 and 132 which form pairs with the X-ray tubes, a support mechanism 11 which supports the X-ray tubes and the X-ray detectors so as to allow them to rotate about a rotation axis parallel to the slice direction, a correction unit 221 which corrects data from each detection element located in an area which X-rays passing through the slit mechanism directly strike, by using data from at least one detection element located outside the area and associated with the same channel, and a reconstruction unit 23 which reconstructs image data on the basis of the corrected data.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:为了减少来自另一对的X射线管的来自X射线的散射辐射对包括多对X射线的多管型X射线CT装置的影响 管和探测器。 解决方案:该X射线CT装置设置有与X射线管成对的X射线管121和122,狭缝机构161和162,X射线检测器131和132,支撑机构11 其支撑X射线管和X射线检测器以允许它们围绕平行于切片方向的旋转轴旋转;校正单元221,其校正来自位于X射线通过的区域中的每个检测元件的数据 通过使用来自位于该区域外并与相同信道相关联的至少一个检测元件的数据,通过狭缝机构直接敲击,以及基于校正数据重构图像数据的重建单元23。 版权所有(C)2007,JPO&INPIT