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71. 发明专利

JPH0269691A RADIATION DETECTOR FOR X-RAY CT 失效
公开(公告)号：JPH0269691A
公开(公告)日：1990-03-08
申请号：JP22050688
申请日：1988-09-05
申请人： TOSHIBA CORP
发明人： SAITO YASUO
IPC分类号： G01T1/20 , A61B6/03
摘要： PURPOSE:To prevent the influence of a dark current to a radiation detector for X-ray CT combined a scintillator with photodiodes of an inverse bias state by providing sensitive areas for measuring photoelectric current and for measuring dark current on the photodiode substrates in the detector. CONSTITUTION:P type silicon areas 14a and 14b are selectively formed on a common silicon base plate 13 and P-N junction diodes D1 and D2 are provided. The photodiodes D1 and D2 are formed in such a way that, of the P-N junctions J1 and J2, the junction J1 is for a sensitive area for measuring photoelectric currents which receives a light from a scintillator 1 and the junction J2 is for a sensitive area for measuring dark currents, which is covered with a light shielding member 16 and X-ray shielding member 17. Since the diodes D1 and D2 are provided on the same base plate, a photoelectric current which is not influenced by a dark current can be measured at the time of scanning a patient, since the dark current S' by the diode D1 can be found from S'=S01/S00 even if the temperature changes from the patient registering time to the patient scanning time. The S10 and S00 and S01 respectively represent the dark current values measured by the diodes D1 and D2 at the patient registering time and the dark current value measured by the diode D2 at the patient scanning time.

72. 发明专利

JPS63255042A DATA COLLECTION SYSTEM IN CT APPARATUS 失效
公开(公告)号：JPS63255042A
公开(公告)日：1988-10-21
申请号：JP8959187
申请日：1987-04-10
申请人： TOSHIBA CORP
发明人： SAITO YASUO , SHINODA YASUO
IPC分类号： G01N23/04 , A61B6/03

73. 发明专利

JPS62100680A AUXILIARY DETECTOR FOR X-RAY CT EQUIPMENT 失效
公开(公告)号：JPS62100680A
公开(公告)日：1987-05-11
申请号：JP24117185
申请日：1985-10-28
申请人： TOSHIBA CORP
发明人： SAITO YASUO
IPC分类号： A61B6/03 , G01N23/04 , G01T1/24 , G01T1/38
摘要： PURPOSE:To obtain an auxiliary detector with a high absorption dose, a better S/N ratio and a better linearity, by setting individual thicknesses and all X-ray absorption doses to meet a fixed requirement. CONSTITUTION:An auxiliary detector 5A corrects variations in X-ray dose in the direction of projection to combine a noise component by a main detector 2 and a noise component by the auxiliary detector 5A, resulting in degraded S/N ratio. To hold the noise component within an allowable range, the noise component by the auxiliary detector 5A should be reduced by increasing the total X-ray dose to be absorbed by the auxiliary detector 5A. On the other hand, the larger the thickness the worse the pulse response, which degrades the linearity of the output to the input. So, the auxiliary detector 5A is made up of a desired number of detector cells to ensure that individual thickness are barely within allowable range of pulse response while X-ray absorption dose as a whole is equal to that required or larger than that.

74. 发明专利

JP2015006328A 医用画像診断装置及び制御方法审中-公开
标题翻译：医学图像诊断装置及其控制方法
公开(公告)号：JP2015006328A
公开(公告)日：2015-01-15
申请号：JP2014110585
申请日：2014-05-28
申请人：株式会社東芝 , Toshiba Corp , 東芝メディカルシステムズ株式会社 , Toshiba Medical Systems Corp
发明人： SAITO YASUO
IPC分类号： A61B6/03
CPC分类号： A61B6/035 , A61B6/032 , A61B6/461 , A61B6/469 , A61B6/5205 , A61B6/5258 , A61B6/54 , A61B6/542 , A61B6/56
摘要：【課題】被ばくの増加を抑止しつつ、観察したい領域の高解像度の画像を得ることを可能とする医用画像診断装置及び制御方法を提供すること。【解決手段】実施形態の医用画像診断装置は、入力装置と、スキャン制御部と、再構成制御部とを備える。入力装置は、画像中のノイズを低減するように取得された第1の医用画像内の領域において、第1の医用画像と比較して高精細な第2の医用画像を取得する領域を指定する指定操作を受け付ける。スキャン制御部は、入力装置によって指定操作を受け付けた領域に対応する部位にX線が照射されるように、スライス方向及びチャンネル方向で前記X線の照射領域を調整する。再構成制御部は、第1の医用画像を初期画像として、スキャン制御部によってX線の照射領域が調整され、収集された投影データを用いた逐次近似法による再構成を実行する。【選択図】図3
摘要翻译：要解决的问题：提供一种能够在抑制放射线暴露的增加的同时获得观察对象区域的高分辨率图像的医疗图像诊断装置和控制方法。解决方案：根据实施方式的医疗图像诊断装置包括：：输入设备扫描控制单元; 和重新配置控制单元。所述输入装置接受指定操作，用于指定在所获取的所述第一医用图像中的区域中指定要获取具有比所述第一医用图像的分辨率高的分辨率的第二医用图像的区域，以便降低所述第一医疗图像中的噪声图片。扫描控制单元在切片方向和通道方向上调整要用X射线照射的区域，使得与输入装置接受指定操作的区域相对应的区域被X射线照射。重新配置控制单元通过使用通过将第一医学图像作为初始图像通过扫描控制单元调整X射线照射区域之后收集的投影数据的逐次逼近方法来执行重新配置。

75. 发明专利

JP2015006324A Ｘ線ＣＴ装置及び画像診断装置有权
标题翻译： X射线CT装置和图像诊断装置
公开(公告)号：JP2015006324A
公开(公告)日：2015-01-15
申请号：JP2014109537
申请日：2014-05-27
申请人：株式会社東芝 , Toshiba Corp , 東芝メディカルシステムズ株式会社 , Toshiba Medical Systems Corp
发明人： SAITO YASUO , TSUKAGOSHI SHINSUKE
IPC分类号： A61B6/03
CPC分类号： A61B6/463 , A61B6/032 , A61B6/035 , A61B6/465 , A61B6/469 , A61B6/5205 , A61B6/5223
摘要：【課題】観察したい領域全体をより高い解像度で容易に観察することを可能とする医用画像診断装置及び制御プログラムを提供する。【解決手段】X線CT装置においては、X線管は、線を照射する。検出部は、X線管より照射され、被検体を透過したX線を検出する。データ収集部は、検出部により検出された検出データに基づいて、投影データを収集する。再構成部は、投影データに基づいて、再構成画像を生成する。表示部は、再構成画像に基づく表示画像を表示する。受付部は、再構成部によって生成された第1の再構成画像に基づく第1の表示画像を表示部の表示画面上で回転させ、スライス方向とは異なる方向を軸とする第2の表示画像に所定の領域を指定する操作を受け付ける。再構成部は、所定の領域について、第1の表示画像より高解像度となるよう、投影データに基づいて第2の再構成画像を生成する。【選択図】図1
摘要翻译：要解决的问题：提供一种医疗图像诊断装置和控制程序，其能够以更高的分辨率容易地观察观察目标区域的整体。解决方案：在X射线CT装置中，X射线管发射X射线。检测单元检测由X射线管发射并穿过被摄体的X射线。数据收集单元根据由检测单元获得的检测数据收集投影数据。重建单元基于投影数据生成重建图像。显示单元基于重构图像显示显示图像。接收单元基于由重建单元生成的第一重建图像在显示单元的显示屏幕上旋转第一显示图像，并且接收在轴处于不同于切片的方向的第二显示图像上指定预定区域的操作方向。重建单元基于投影数据生成第二重构图像，使得在预定区域中获得比第一显示图像的分辨率高的分辨率。

76. 发明专利

JP2010046212A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2010046212A
公开(公告)日：2010-03-04
申请号：JP2008211888
申请日：2008-08-20
申请人： Toshiba Corp , Toshiba 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
发明人： SAITO YASUO , OKUMURA YOSHIKAZU
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B5/113 , A61B6/027
摘要： PROBLEM TO BE SOLVED: To obtain volume data in an optionally selected respiration phase with the movement of a subject in a deep respiration motion even if the subject performs the respiration without such reproductivity as when the subject intentionally performs the deep respiration.
SOLUTION: A respiration facilitating machine 21 urges the subject 2 to intentionally perform respiration with different depths by outputting such messages as; "Relax, please", "Inhale deep as much as possible", "Exhale deep as much as possible", "Inhale deep as much as possible once more", and "Relax again" in voice. At the time, an X-ray bulb 4 and a two-dimensional detector system 7 are continuously rotationally moved around the subject 2 to execute the main scan, so that projection data are collected.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使受试者进行呼吸而没有与受试者有意执行深呼吸时的再现性相关，即使在受试者进行深呼吸运动时，在任选选择的呼吸阶段获得体数据。呼吸促进机21通过输出以下消息来促使对象2有意地用不同深度进行呼吸; “请放心”，“尽可能深入”，“尽可能多地呼气”，“再次深呼吸”，再次放声大笑。此时，X射线灯泡4和二维检测器系统7围绕被摄体2连续地旋转移动以执行主扫描，从而收集投影数据。版权所有（C）2010，JPO＆INPIT

77. 发明专利

JP2010022576A X-ray computed tomography apparatus and image reconstruction method 审中-公开
标题翻译： X射线计算机图像设备和图像重建方法
公开(公告)号：JP2010022576A
公开(公告)日：2010-02-04
申请号：JP2008187175
申请日：2008-07-18
申请人： Toshiba Corp , Toshiba 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
发明人： AKINO SHIGEOMI , NAKANISHI SATORU , SAITO YASUO , ARAKIDA KAZUMASA
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To constantly assure the image quality improvement of a reconstruction image by surely reducing a cone beam artifact.
SOLUTION: A scan control section 33 controls to generate a circular trajectory projection data group and a line projection data group by executing a circular trajectory scan and a line scan. An image reconstruction determination section 36 compares a difference value between projection data collected respectively at an intersection between the circular trajectory scan and the line trajectory scan, with a set threshold stored by a set information storage section 38. When the difference value exceeds the set threshold, the image reconstruction determination section 36 determines that an image reconstruction processing section 37 reconstructs an artifact-reduced image only from the circular trajectory projection data group and, when the difference value does not exceed the set threshold, determines that the image reconstruction processing section 37 reconstructs the artifact-reduced image from the circular trajectory projection data group and the line projection data group.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过确保减少锥形束伪影，不断确保重建图像的图像质量改善。解决方案：扫描控制部分33通过执行圆形轨迹扫描和行扫描来控制生成圆弧轨迹投影数据组和行投影数据组。图像重建判定部36将分别在圆弧轨迹扫描和线轨迹扫描之间的交点处收集的投影数据之间的差值与设定信息存储部38存储的设定阈值进行比较。当差值超过设定阈值时，图像重建判定部36判定图像重建处理部37仅从圆形轨迹投影数据组重构伪影缩小图像，并且当差值不超过设定的阈值时，确定图像重建处理部37 从圆形轨迹投影数据组和线投影数据组重构伪影缩小图像。版权所有（C）2010，JPO＆INPIT

78. 发明专利

JP2009282033A X-ray computed tomographic apparatus and method of manufacturing x-ray detection device 有权
标题翻译： X射线计算机图像设备及其制造X射线检测装置的方法
公开(公告)号：JP2009282033A
公开(公告)日：2009-12-03
申请号：JP2009165060
申请日：2009-07-13
申请人： Toshiba Corp , 株式会社東芝
发明人： IGARASHI KENJI , IDE HIDEKI , USHIMI KENJI , SAITO YASUO , YOSHIDA YUZO , OKUMURA YOSHIKAZU
IPC分类号： G01T7/00 , A61B6/03 , A61B6/06 , G01T1/20
摘要： PROBLEM TO BE SOLVED: To provide a detector unit capable of easily positioning a detector with respect to a collimator without requiring a special apparatus by only mechanically assembling it without the sense of adjustment.
SOLUTION: The X-ray computed tomographic apparatus includes: a photodiode chip 42 mounted on a board 41 attached to supports 31, 32 supporting a collimator single plate 33; a scintillator block 43 arranged corresponding to the photodiode chip 42 and provided on the photodiode chip 42 to convert X-rays into light; and comb-like adjustment components 45, 45 provided at the side of the collimator single plate 33 of the board 41 and regulating the position of the photodiode chip 42 or the scintillator block 43 with respect to the collimator single plate 33 in a channel direction C by being brought into engagement with the collimator single plate 33.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种检测器单元，其能够相对于准直器容易地定位检测器，而不需要专门的设备，仅通过机械组装而没有调整感。解决方案：X射线计算机断层摄影装置包括：安装在支撑准直器单板33的支撑件31,32上的板41上的光电二极管芯片42; 与光电二极管芯片42对应配置并设置在光电二极管芯片42上以将X射线转换为光的闪烁体块43; 以及设置在基板41的准直器单板33一侧的梳状调整部件45,45，并且在通道方向C上调整相对于准直器单板33的光电二极管芯片42或闪烁体块43的位置通过与准直器单板33接合。版权所有（C）2010，JPO＆INPIT

79. 发明专利

JP2005224637A X-ray ct apparatus and method for correcting misalignment thereof 有权
标题翻译： X射线CT装置及其矫正方法
公开(公告)号：JP2005224637A
公开(公告)日：2005-08-25
申请号：JP2005139828
申请日：2005-05-12
申请人： Toshiba Corp , 株式会社東芝
发明人： SAITO YASUO , TAGUCHI KATSUYUKI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To obtain a good reconstructed image by removing artifacts which are fundamentally generated during the image reconstruction as a result of misalignment of an X-ray detection device or misalignment of auto focusing.
SOLUTION: An X-ray CT apparatus comprises an X-ray source 3 and the X-ray detection device 7 having a lot of channels arranged confronting a space where the X-ray source and an subject are positioned. The X-ray CT apparatus reconstructs information provided by a scan to turn the X-ray source around the space which the subject was arranged at least in the channel array direction using the reconstruction parameter and/or beam position information. The X-ray CT apparatus is also equipped with an auto focus position sensor 9 for detecting a relative auto focus position of the slice direction of the X-ray source to the X-ray detection device before scanning or during scanning, and a reconstruction device 25 which performs reconstruction correcting a gap of an X-ray pass in the slice direction, based on the detected relative focus position.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了通过去除由于X射线检测装置的未对准或自动聚焦的未对准而在图像重建期间根本产生的伪影，获得良好的重建图像。解决方案：X射线CT装置包括X射线源3和X射线检测装置7，X射线检测装置7具有布置成面对X射线源和被检体的空间的许多通道。 X射线CT装置重建由扫描提供的信息，以使用重建参数和/或光束位置信息使X射线源围绕主体被布置的空间至少在通道阵列方向上旋转。 X射线CT装置还配备有自动对焦位置传感器9，用于在扫描之前或扫描期间检测X射线源的切片方向的相对自动聚焦位置到X射线检测装置，以及重建装置 25，其基于检测到的相对焦点位置执行校正X方向上的切片方向上的间隙的重建。版权所有（C）2005，JPO＆NCIPI

80. 发明专利

JP2003207575A COLLIMATOR, X-RAY DETECTION DEVICE AND X-RAY CT DEVICE 审中-公开
公开(公告)号：JP2003207575A
公开(公告)日：2003-07-25
申请号：JP2002008289
申请日：2002-01-17
申请人： TOSHIBA CORP
发明人： IGARASHI KENJI , OKUMURA YOSHIKAZU , SAITO YASUO , SHIMIZU MASAHARU , MIZUI SHIGERU
IPC分类号： G01N23/04 , A61B6/03 , A61B6/06 , G01T7/00
摘要： PROBLEM TO BE SOLVED: To provide a collimator for controlling scattered X-rays over the whole region of a detector of an X-ray CT device, an X-ray detection device using the collimator, and the X-ray CT device on which the X-ray detection device is loaded. SOLUTION: The pitch of arrangement of collimator plates 19 at a peripheral part 18B of the collimator 18 is set to be sparser or shorter than the pitch of arrangement of the collimator plates 19 at the center part 18A of the collimator 18. COPYRIGHT: (C)2003,JPO

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