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1. 发明专利

JP2009154021A X-ray ct system and its image display method 有权
标题翻译： X射线CT系统及其图像显示方法
公开(公告)号：JP2009154021A
公开(公告)日：2009-07-16
申请号：JP2009099614
申请日：2009-04-16
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： NAGAOKA TAKAYUKI , MIYAZAKI YASUSHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT system which suppresses unnecessary X rays exposure to a subject and can irradiate it with a proper dose of X rays.
SOLUTION: In the X-ray CT system possessing an X-ray source 12, a detector 13, a scanner 11 which carries these, a high voltage generator 22, a host computer 20, an image processing apparatus 24, and a display device 25, etc., an operation means 21 which establishes the scanning condition of the apparatus, a scanogram analysis means 26, which analyzes the scanogram image data of the subject 15 and forms three-dimensional permeation length model of the subject, a tube current establishment means 23, which automatically establishes the transition pattern of a line tube electric current (hereafter called a tube electric current) corresponding to the photographed part of the subject 15 from the permeation length model and scanning condition of the subject, and a dose calculation means, which calculates a dose irradiating the subject 15 from the transition pattern of the tube electric current and displays calculation results on the display device 25, are provided.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种X射线CT系统，其抑制对对象的不必要的X射线照射并且可以用适当剂量的X射线照射它。解决方案：在具有X射线源12的X射线CT系统中，检测器13，携带它们的扫描仪11，高压发生器22，主计算机20，图像处理装置24和显示装置25等，建立装置的扫描条件的操作装置21，分析被摄体15的扫描图像数据并形成被检体的三维渗透长度模型的扫描图分析装置26，管电流建立装置23，其从渗透长度模型和被检体的扫描条件自动建立与受检者15的拍摄部分对应的管线电流（以下称为管电流）的过渡模式，以及剂量计算提供了从管电流的过渡模式计算照射对象15的剂量并将计算结果显示在显示装置25上的装置。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008220406A Image processor and image processing program 有权
标题翻译：图像处理器和图像处理程序
公开(公告)号：JP2008220406A
公开(公告)日：2008-09-25
申请号：JP2007058734
申请日：2007-03-08
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MIYAZAKI YASUSHI , AOKI YUKO , HAYASHI HIROMITSU
IPC分类号： A61B6/03 , A61B5/055 , G01T1/161 , G06T1/00 , G06T15/08
摘要： PROBLEM TO BE SOLVED: To make it possible to set a 3D area of interest for evaluating a desired objective area with high reproducibility. SOLUTION: A 3D image reconstructed is obtained from the image data photographed by a medical image photographing device, and a specific tissue is extracted from the obtained 3D image as a 3D reference area. A characteristic amount being the character relating to the shape or the concentration of the extracted reference area is calculated and the 3D area of interest is set from the characteristic amount and a border condition being the information relating to a direction and a distance. Thereby the 3D area of interest can be set with high reproducibility. Further, an analyzing area becoming the object of an image diagnosis can be extracted from the 3D area of interest. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了能够以高再现性设置用于评估所需目标区域的感兴趣的3D区域。解决方案：从由医学图像拍摄装置拍摄的图像数据获得重建的3D图像，并且从获得的3D图像中提取特定组织作为3D参考区域。计算与所提取的基准区域的形状或浓度相关的特征量，并根据特征量设定感兴趣的3D区域，将边界条件设置为与方向和距离有关的信息。因此，可以以高再现性设置感兴趣的3D区域。此外，可以从感兴趣的3D区域提取成为图像诊断对象的分析区域。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2006340992A IMAGE PROCESSING PROGRAM, DEVICE, AND METHOD 审中-公开
公开(公告)号：JP2006340992A
公开(公告)日：2006-12-21
申请号：JP2005171207
申请日：2005-06-10
申请人： HITACHI MEDICAL CORP
发明人： MIYAZAKI YASUSHI , OMI YASUO
IPC分类号： A61B6/03 , A61B6/00 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To provide an image processing program, device and method, capable of easily controlling the smoothing strength or emphasizing strength without determining complicated parameter in the adaptive filtering process, and obtaining a stable and high-quality medical image by reducing the image noise while inhibiting generation of mosaic pattern noise. SOLUTION: The image processing device comprises a local area setting part 11b for setting a local area for each focused pixel of the medical image, a parameter determining part 11d for determining the width and number of the pixel value intervals for generating a histogram indicating the frequency of appearance of the pixel values in the local area, a histogram generating part 11e for generating the histogram, an operation interval setting part 11f for setting an operation interval in the histogram, and a filtering part 11g for weighting the frequency of appearance of the pixel value interval to the median of the pixel value interval as the relative weight for each pixel value interval included in the operation interval. COPYRIGHT: (C)2007,JPO&INPIT

4. 发明专利

JP2005237825A Image diagnostic support system 审中-公开
标题翻译：图像诊断支持系统
公开(公告)号：JP2005237825A
公开(公告)日：2005-09-08
申请号：JP2004054836
申请日：2004-02-27
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： OMI YASUO , MIYAZAKI YASUSHI
IPC分类号： G01R33/32 , A61B5/055 , A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an image diagnostic support system for easily comparing a plurality of time picture element value curves.
SOLUTION: This image diagnostic support system has an interest area setting means for setting an interest area on a time series image, a picture element value calculating means for calculating a picture element value in the interest area in the respective time series images, a time picture element value curve making means for drawing the time picture element value curves on a coordinate system regulated by a time base and a picture element value base on the basis of the picture element value calculated from the respective time series images, and a display control means for moving one of the plurality of time picture element value curves in parallel to the other when displaying the plurality of time picture element value curves on a display means.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于容易地比较多个时间像素值曲线的图像诊断支持系统。解决方案：该图像诊断支持系统具有用于设置时间序列图像上的兴趣区域的兴趣区域设置装置，用于计算各个时间序列图像中的兴趣区域中的图像元素值的图像元素值计算装置，时间图像元素值曲线制作装置，用于根据从各个时间序列图像计算的图像元素值，在由时基和图像元素值基础调节的坐标系上绘制时间图像元素值曲线，以及显示控制装置，用于在显示装置上显示多个时间像素值曲线时，将多个时间像素值曲线之一并行移动。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2005143759A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2005143759A
公开(公告)日：2005-06-09
申请号：JP2003384314
申请日：2003-11-13
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： HIROKAWA KOICHI , MIYAZAKI YASUSHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus capable of radiographing a scanogram image of only one direction prior to the main scanning of a testee body, using it and easily executing an X-ray CT inspection under an appropriate radiographing condition from the viewpoints of image quality and an exposure dose.
SOLUTION: This X-ray CT apparatus is provided with a function for calculating the radiographing condition considered as being appropriate from the viewpoints of the image quality and the exposure dose by storing a human body CT value model to be a reference and the data of the exposure dose and image noise, or the like, corresponding to it as a data base file and comparing a testee body CT value model calculated and estimated from the radiographed scanogram image data of the testee body with the stored reference CT value model. Also, it is provided with a function for enabling an operator to evaluate the calculated result and re-input the radiographing condition suited to a purpose.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种X射线CT装置，其能够在被检体的主扫描之前仅对一个方向进行扫描图像的拍摄，使用它并且容易地在适当的情况下执行X射线CT检查从图像质量和曝光剂量的观点来看放射照相条件。解决方案：该X射线CT装置具有通过将人体CT值模型存储为参考来计算从图像质量和曝光剂量的角度考虑为适当的放射照相条件的功能，将其作为数据库文件对应的曝光剂量和图像噪声等的数据，并将从被检体的射线照相扫描图像图像数据计算出的被测体体CT值模型与存储的基准CT值模型进行比较。此外，它具有使操作者能够评估计算结果并重新输入适合于目的的放射照相条件的功能。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2005034473A Irregular shadow detecting apparatus 有权
标题翻译：不规则阴影检测装置
公开(公告)号：JP2005034473A
公开(公告)日：2005-02-10
申请号：JP2003275883
申请日：2003-07-17
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： GOTO YOSHIHIRO , MIYAZAKI YASUSHI , ISHIKAWA KEN , TAKAHASHI TETSUHIKO , MITSUTAKE TAKESHI , NISHIMURA HIROSHI , YAMAMOTO ETSUJI
IPC分类号： G01R33/32 , A61B5/055 , A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an irregular shadow detecting apparatus which can be applied to the whole body of a patient and can easily confirm variation with time of the shadow.
SOLUTION: Tomograms for sections comprising the head, the neck, the breast, the abdomen, and the leg of the same subject which are acquired at the diverse time are stored with relating to the acquisition times. Also, irregular shadow detection algorithm for each section is memorized. Detection of the irregular shadow is carried out based on the algorithm which after the section of the tomogram is recognized, is automatically selected according to the section. In this case, the tomogram is interpolated at intervals below its slice interval to create tomograms and the tomograms at the same position which have diverse acquisition time are chosen from them to perform a differential operation.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供可应用于患者的全身的不规则阴影检测装置，并且可以容易地确认阴影随时间的变化。
解决方案：在多个时间段获取的包含同一受试者的头部，颈部，胸部，腹部和腿部的部分的图像存储与获取时间有关。另外，存储每个部分的不规则阴影检测算法。基于在识别断层图像的部分之后的算法，根据该部分自动选择不规则阴影的检测。在这种情况下，断层图像以其切片间隔以下的间隔内插，以产生断层图像，并且从它们中选择具有不同获取时间的相同位置处的断层图像以执行差分操作。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004024659A X-ray ct apparatus 审中-公开
公开(公告)号：JP2004024659A
公开(公告)日：2004-01-29
申请号：JP2002187412
申请日：2002-06-27
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MIYAZAKI YASUSHI , OKAJIMA KENICHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus high in image quality and high in operating speed by preventing the deterioration of inage quality due to the microfabrication of a detection element of an X-ray detector.
SOLUTION: This apparatus is provided with a blur function calculation means 92 for calculating a blur function by crosstalk according to each separation structure with a detection cell 30 arranged adjacently to each detection cell 30 of a plurality of detection element modules 31; an impulse response calculation means 93 of an inverse filter for calculating a one-dimensional deconvolution Kernel from the blur function; an impulse response composing means 94 for calculating a two-dimensional deconvolution Kernel from the one-dimensional deconvolution Kernel; and a raw data crosstalk correcting means 97 for correcting the crosstalk of raw data by the one-dimensional and two-dimensional deconvolution Kernels.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2003153893A APPARATUS FOR FORMING TOMOGRAPHIC IMAGE 审中-公开
公开(公告)号：JP2003153893A
公开(公告)日：2003-05-27
申请号：JP2001355833
申请日：2001-11-21
申请人： HITACHI MEDICAL CORP
发明人： GOTO TAIGA , MIYAZAKI YASUSHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an image with desired precision at high speed by changing a re-constitution algorithm in response to a predetermined photographing part or a measurement throughput (a bed movement speed) in CT mounted with the plurality of re-constitution algorithms. SOLUTION: A tomographic image forming apparatus includes an X-ray tube 1, an X-ray detector 5, a scanner driving device 6, an input/output device for inputting a measurement parameter and a display device 12. An image processor 9 consists of a pre-processing arithmetic equipment 91 for calculating the common part of the respective algorithms, a highly accurate re-constitution arithmetic unit 92 and a post-processing arithmetic device 93 for performing a three-dimensional image processing and other kinds of analysis and calculation. The X-ray tube 1 is moved linearly and relatively parallel with a circuital axis while allowing the X-ray tube 1 to relatively go around the subject 4. X-rays with a three-dimensional dispersion is irradiated from the X-ray tube 1, and then, a tomographic image is formed from two-dimensionally arrayed projection data in the X-ray detector 5 through the use of the X-rays passing through the subject 4.

9. 发明专利

JP2002263097A RADIOGRAPHIC TOMOGRAPH 失效
公开(公告)号：JP2002263097A
公开(公告)日：2002-09-17
申请号：JP2001067150
申请日：2001-03-09
申请人： HITACHI MEDICAL CORP
发明人： NAGAOKA TAKAYUKI , MIYAZAKI YASUSHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide a radiographic tomograph capable of irradiating a suitable X-ray dose by suppressing a useless X-ray exposure to a specimen. SOLUTION: The radiographic tomograph comprises an X-ray source 12, a detector 13, a scanner 11 mounting them, a high-voltage generator 22, a host computer 20, an image processing unit 24, a display unit 25 and the like. The tomograph further comprises an operating means 21 for setting scanning conditions of the tomograph, a scanogram analyzing means 26 for analyzing scanogram image data of the specimen 15 to generate a three-dimensional transmission length model of the specimen, a duct current setting means 23 for automatically setting a change pattern of an intraduct current (hereinafter referred to as a 'duct current') in response to a photographing site of the specimen 15 based on the transmission length model of the specimen and the scanning conditions, and a dose calculating means for calculating a dose to be irradiated to the specimen 15 based on the change pattern of the duct current to display a calculated result on the unit 25.

10. 发明专利

JP2001095793A X-RAY CT APPARATUS 失效
公开(公告)号：JP2001095793A
公开(公告)日：2001-04-10
申请号：JP28231099
申请日：1999-10-04
申请人： HITACHI MEDICAL CORP
发明人： MIYAZAKI YASUSHI
IPC分类号： A61B6/03 , G06T1/00 , G06T3/00
摘要： PROBLEM TO BE SOLVED: To provide the R/R(rotation/rotation) type CT apparatus provided with two dimensionally arranged detectors, which can reduce ring shaped artifact. SOLUTION: The ring correcting treatment apparatus 205 is composed by the r-θ conversion apparatus 101, the ring component extracting apparatus 102, the x-y conversion apparatus 103, and the correcting treatment apparatus 104. The occurring of ring shape artifact to obstruct diagnosis, is suppressed and the stable picture quality tomographic image is obtained by this invention.

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