公开(公告)号：US08814801B2

公开(公告)日：2014-08-26

申请号：US12953743

申请日：2010-11-24

申请人： Toshio Tsuji ,  Masao Yoshizumi ,  Masashi Kawamoto ,  Yukihito Higashi ,  Noboru Saeki ,  Ryuji Nakamura ,  Abdugheni Kutluk ,  Akinobu Kohno ,  Tetsuya Horiuchi ,  Teiji Ukawa

发明人： Toshio Tsuji ,  Masao Yoshizumi ,  Masashi Kawamoto ,  Yukihito Higashi ,  Noboru Saeki ,  Ryuji Nakamura ,  Abdugheni Kutluk ,  Akinobu Kohno ,  Tetsuya Horiuchi ,  Teiji Ukawa

IPC分类号： A61B5/02 ,  A61B5/00

CPC分类号： A61B5/022 ,  A61B5/02007 ,  A61B5/0402 ,  A61B5/0452 ,  A61B8/0891 ,  A61B8/485

摘要： A vessel wall monitoring apparatus includes: a first detecting unit which detects vessel diameter information based on first biological information obtained from a subject; a first producing unit which differentiates the vessel diameter information detected by the first detecting unit, to produce a vessel diameter function; a second detecting unit which detects blood pressure based on second biological information obtained from the subject; a second producing unit which performs a logarithmic operation on the blood pressure detected by the second detecting unit, to produce a logarithmic blood pressure function; and an outputting unit which produces an impedance model expression by using the vessel diameter function, the logarithmic blood pressure function, and mechanical characteristic values including a stiffness, viscosity, and inertia, and which calculates and outputs at least one of the stiffness, the viscosity, and the inertia based on the impedance model expression.

摘要翻译： 血管壁监视装置包括：第一检测单元，其基于从对象获得的第一生物信息来检测血管直径信息; 第一产生单元，其区分由第一检测单元检测的血管直径信息，以产生血管直径函数; 第二检测单元，其基于从对象获得的第二生物信息检测血压; 第二生成部，对由所述第二检测部检测出的血压进行对数运算，生成对数血压函数; 以及输出单元，其通过使用血管直径函数，对数血压函数和包括刚度，粘度和惯性的机械特性值来产生阻抗模型表达，并且计算并输出刚度，粘度 ，以及基于阻抗模型表达式的惯性。

公开(公告)号：US08416913B2

公开(公告)日：2013-04-09

申请号：US12045966

申请日：2008-03-11

申请人： Naruomi Akino ,  Satoru Nakanishi ,  Tetsuya Horiuchi

发明人： Naruomi Akino ,  Satoru Nakanishi ,  Tetsuya Horiuchi

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/03 ,  G06T7/564 ,  G06T2207/10116

摘要： X-ray transmission data of a specific direction is extracted from X-ray transmission data obtained by rotating an X-ray tube irradiating an X-ray around an object. The outline of the object is calculated based on the X-ray transmission data of the specific direction. Then, based on this outline, the X-ray transmission data is corrected, and an image of the inside of the object is reconstructed from the corrected X-ray transmission data.

摘要翻译： 从通过旋转X射线管照射X射线的物体所获得的X射线透射数据中提取特定方向的X射线透射数据。 基于特定方向的X射线透射数据计算对象的轮廓。 然后，基于该轮廓，对X射线透射数据进行校正，根据经校正的X射线透射数据重构对象内部的图像。

公开(公告)号：US07639776B2

公开(公告)日：2009-12-29

申请号：US11757732

申请日：2007-06-04

申请人： Makoto Gohno ,  Tetsuya Horiuchi ,  Akihiko Nishide ,  Akira Hagiwara

发明人： Makoto Gohno ,  Tetsuya Horiuchi ,  Akihiko Nishide ,  Akira Hagiwara

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/488 ,  A61B6/542 ,  H05G1/30

摘要： The present invention aims to obtain a tomographic image similar in image quality to a tomographic image obtained by executing a scan at X-ray tube current value set by an X-ray automatic exposure function even when the X-ray tube current value set by the X-ray automatic exposure function are not within a standard range of the X-ray tube current values settable at the X-ray tube (21). X-ray tube current value supplied to the X-ray tube (21) are set by the X-ray automatic exposure function. Thereafter, when the X-ray tube current value set by the X-ray automatic exposure function is not within in the standard range of the X-ray tube current value settable at the X-ray tube, the X-ray tube current value at a portion not within the standard range are changed so as to be within the standard range, and the set value of helical pitch is changed so as to correspond to the ratio between the pre-changed x-ray tube current value and the post-changed X-ray tube current value.

摘要翻译： 本发明的目的在于获得与通过由X射线自动曝光功能设定的X射线管电流值执行扫描而获得的断层图像相似的断层图像，即使当由X射线管电流值 X射线自动曝光功能不在X射线管（21）可设定的X射线管电流值的标准范围内。 通过X射线自动曝光功能设定供给X射线管（21）的X射线管电流值。 此后，当通过X射线自动曝光功能设定的X射线管电流值不在可设置在X射线管的X射线管电流值的标准范围内时，X射线管电流值在 不在标准范围内的部分被改变为在标准范围内，并且改变螺距的设定值，以便对应于预先改变的X射线管电流值和后变化的X射线管电流值之间的比率 X射线管电流值。

公开(公告)号：US20070025500A1

公开(公告)日：2007-02-01

申请号：US11485250

申请日：2006-07-12

申请人： Tetsuya Horiuchi ,  Junko Sekiguchi

发明人： Tetsuya Horiuchi ,  Junko Sekiguchi

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G01T1/2985 ,  Y10S378/901

摘要： The quality of an image can be improved and radiation can effectively be utilized. In an imaging area of a subject where a main scan is performed, a specific scan area setting unit sets a specific scan area where a scan is performed under a specific scan condition allowing radiation exposure dose on the subject to be low. Then, the scan condition setting unit sets a main scan condition so that the specific scan area is scanned under the specific scan condition allowing the radiation exposure dose on the subject to be low.

公开(公告)号：US20070019851A1

公开(公告)日：2007-01-25

申请号：US11489969

申请日：2006-07-20

申请人： Akihiko Nishide ,  Akira Hagiwara ,  Tetsuya Horiuchi

发明人： Akihiko Nishide ,  Akira Hagiwara ,  Tetsuya Horiuchi

IPC分类号： G06K9/00

CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T2211/412

摘要： The present invention is intended to improve the quality of a four-dimensional image that is a time-varying three-dimensional image. The four-dimensional image that is a time-varying three-dimensional image is spatially filtered in the direction of a time axis and the directions of spatial axes alike.

摘要翻译： 本发明旨在提高作为时变三维图像的四维图像的质量。 作为时变三维图像的四维图像在时间轴的方向和空间轴的方向上进行空间滤波。

公开(公告)号：US06954513B2

公开(公告)日：2005-10-11

申请号：US10738754

申请日：2003-12-17

申请人： Tetsuya Horiuchi

发明人： Tetsuya Horiuchi

IPC分类号： A61B6/00 ,  A61B6/03 ,  G21K1/12

CPC分类号： A61B6/583 ,  A61B6/542

摘要： For the purpose of displaying a more accurate exposure dose value without imposing additional work on an imaging operator, an exposure dose calculating method in an X-ray CT apparatus comprises the steps of: inputting the age and a region to be examined of a subject; calculating the head or chest diameter of the subject based on the age and region to be examined of the subject input at the inputting step, and on statistics on the head or chest circumference of a human body; calculating an exposure dose of a phantom having a diameter equivalent to the calculated diameter of the head or chest, based on prior information on an exposure dose to a phantom having a predetermined diameter when a predetermined X-ray dose is applied to the phantom; and displaying the exposure dose value.

摘要翻译： 为了在不对成像操作者施加附加作用的情况下显示更准确的曝光剂量值的目的，X射线CT装置中的曝光剂量计算方法包括以下步骤：输入被检体的被检查的年龄和区域; 根据输入步骤中被检者输入的年龄和区域，以及人体头部或胸围的统计，计算被检者的头部或胸部直径; 基于当将预定的X射线剂量施加到体模时具有对具有预定直径的体模的暴露剂量的现有信息，计算具有等于头部或胸部的计算直径的直径的体模的曝光剂量; 并显示曝光剂量值。

公开(公告)号：US06404844B1

公开(公告)日：2002-06-11

申请号：US09718165

申请日：2000-11-21

申请人： Tetsuya Horiuchi ,  Makoto Gohno

发明人： Tetsuya Horiuchi ,  Makoto Gohno

IPC分类号： A61B603

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/583

摘要： For the purpose of determining a radiation dose without excess or insufficiency with respect to an allowed value of image noise in performing a helical scan by a CT apparatus comprising a multi-detector, a method comprises the steps of: selecting an image thickness of an X-ray tomographic image to be produced by a helical scan by an X-ray CT apparatus comprising a multi-detector (Step ST1); provisionally determining an X-ray dose in obtaining the X-ray tomographic image having the image thickness by single-slice CT using a single-slice CT radiation dose determining algorithm (Step ST2); selecting a scan protocol (Step ST3); reading a dose correction factor from a dose correction factor table that matches the selected image thickness (Step ST4); correcting the X-ray dose by the dose correction factor (Step ST5); determining tomographic imaging scan conditions by specifying at least one of the tube current and the emission time (Step ST6); and performing the helical scan and displaying an X-ray tomographic image (Step ST7). Consequently, a disadvantage that a subject is exposed more than necessary can be prevented.

摘要翻译： 为了在通过包括多检测器的CT装置进行螺旋扫描时确定相对于图像噪声的允许值而没有过多或不足的辐射剂量的目的，方法包括以下步骤：选择X的图像厚度 通过由包括多检测器的X射线CT装置进行螺旋扫描而生成的片断层析图像（步骤ST1）; 使用单片CT辐射剂量确定算法临时确定通过单层CT获得具有图像厚度的X射线断层图像的X射线剂量（步骤ST2）; 选择扫描协议（步骤ST3）; 从与所选图像厚度匹配的剂量校正因子表读取剂量校正因子（步骤ST4）; 通过剂量校正因子校正X射线剂量（步骤ST5）; 通过规定管电流和发射时间中的至少一个来确定层析成像扫描条件（步骤ST6）; 并执行螺旋扫描并显示X射线断层图像（步骤ST7）。 因此，可以防止受试者暴露于需要以外的缺点。

公开(公告)号：US5521955A

公开(公告)日：1996-05-28

申请号：US343510

申请日：1994-11-21

申请人： Makoto Gohno ,  Tetsuya Horiuchi

发明人： Makoto Gohno ,  Tetsuya Horiuchi

IPC分类号： C12N15/09 ,  A61B6/00 ,  A61B6/03 ,  A61K48/00 ,  A61K49/00 ,  C07H21/04 ,  C12N5/10 ,  C12N9/14 ,  C12N9/88 ,  C12N15/12 ,  C12Q1/68

CPC分类号： A61B6/505 ,  C12N9/14 ,  C12N9/88 ,  A61B6/583

摘要： A method for quantitatively determining bone mineral mass by a CT system, comprising scanning an objective region together with a plurality of samples produced by mixing a water equivalent material with various ratios of a standard material equivalent to bone mineral mass and determining the bone mineral density of the objective region with reference to the CT numbers of the samples, wherein a plurality of samples are scanned together with the objective region at one or multiple levels of tube voltage and a corrected CT number of each sample is calculated by substituting the CT number of each of the samples with the CT number of blood or a standard material equivalent to blood. By scanning at a single level of tube voltage, bone mineral density is determined, on the basis of the CT number of the objective region and with reference to the corrected CT numbers. On the other hand, by scanning at multiple levels of tube voltage, bone mineral density is determined on the basis of the CT number of the objective region and with reference to the corrected CT numbers while excluding the effect of fat. In the foregoing manner errors due to blood and fat are corrected.

摘要翻译： PCT No.PCT / JP93 / 00698 Sec。 371日期：1994年11月21日 102（e）日期1994年11月21日PCT提交1993年5月25日PCT公布。 出版物WO93 / 24055 日期：1993年12月9日。一种用于通过CT系统定量测定骨矿物质量的方法，包括将目标区域与多个样品一起扫描，所述多个样品通过混合具有等同于骨矿物质质量的标准材料的各种比例的水当量材料 并且参照样本的CT号确定目标区域的骨矿物质密度，其中多个样本与管电压的一个或多个级别与目标区域一起扫描，并且计算每个样品的校正CT数 通过用CT数量的血液或相当于血液的标准物质代替每个样品的CT数。 通过在单电压管电压下进行扫描，根据目标区域的CT数量和参照校正的CT数确定骨矿物质密度。 另一方面，通过在管电压的多个级别进行扫描，基于目标区域的CT数，参照校正的CT号码，而不考虑脂肪的影响，确定骨矿物质密度。 以上述方式校正由血液和脂肪引起的错误。

公开(公告)号：US06987828B2

公开(公告)日：2006-01-17

申请号：US10397026

申请日：2003-03-25

申请人： Tetsuya Horiuchi

发明人： Tetsuya Horiuchi

IPC分类号： A61B6/00

CPC分类号： G01N23/046 ,  A61B6/027 ,  G01N2223/419

摘要： An object of the present invention is to acquire transmitted X-ray data by irradiating X-rays of appropriate doses determined for the portions of a section containing the major axis and the portions thereof containing the minor axis respectively. An X-ray irradiating/detecting device consists mainly of an X-ray irradiator that includes an X-ray tube and irradiates a fan-shaped X-ray beam, and an X-ray detector that has a plurality of X-ray detecting elements arrayed in a direction in which the fan-shaped X-ray beam spreads and that is opposed to the X-ray irradiator with an object of imaging between them. The X-ray irradiating/detecting device is rotated about the object in order to acquire transmission X-ray data stemming from a plurality of views. At this time, the dose of the X-ray beam is differentiated between predetermined angular ranges of a section of the object shaped like an oval, which extend with the minor axis of the oval section as a centerline, and the other angular ranges.

公开(公告)号：US06633627B2

公开(公告)日：2003-10-14

申请号：US09919164

申请日：2001-07-31

申请人： Tetsuya Horiuchi

发明人： Tetsuya Horiuchi

IPC分类号： G21K300

CPC分类号： A61B6/032 ,  A61B6/4035 ,  G21K1/10

摘要： In order to obtain an X-ray tomographic image with high quality while minimizing the exposed dose to a subject by employing the most suitable filter according to the region of the subject to be scanned, a filter unit 6 having filters 6a-6c having different transmission properties are provided below an X-ray tube 4 in a gantry apparatus. To obtain an X-ray tomographic image, upon determining the scan region of the subject, a motor 7 is driven to position one of the filters corresponding to the scan region just below the X-ray tube 4 for employing the filter, and X-rays are applied to the subject through the filter.

摘要翻译： 为了通过使用根据要扫描的对象区域的最合适的滤波器来最小化对被摄体的暴露剂量来获得具有高质量的X射线断层图像，滤光器单元<6> BOLD> 具有过滤器 6 a - 6 c < 具有不同透射特性的ITALIC> 在龙门式装置中的X射线管 4 之下提供。 为了获得X射线断层图像，在确定被检体的扫描区域时，驱动电动机 7 将与扫描区域对应的一个过滤器 使用过滤器的X射线管 4 ，并通过过滤器将X射线施加到被摄物体。