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1. 发明专利

JP2003299646A Image analyzer 审中-公开
标题翻译：图像分析仪
公开(公告)号：JP2003299646A
公开(公告)日：2003-10-21
申请号：JP2002108960
申请日：2002-04-11
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： A61B6/03 , A61B5/055 , G06T1/00 , G06T7/00 , G06T7/20
CPC分类号： A61B6/507
摘要： PROBLEM TO BE SOLVED: To obtain the analyzing accuracy equal to that obtained in a case when a subject does not move, even when the subject moves during photographing, when operations such as image analysis is performed on the basis of a tomogram provided by a computerized tomography diagnostic device.
SOLUTION: The tomogram of a subject for bloodstream analysis is inputted from a tomogram input device (step 401), and the presence or absence of the movement of the subject is determined on the basis of the image of each stage (step 402). When the movement of the subject exists, the correction for movement (that is, correction for obtaining the tomogram equal to that obtained in a case of no-movement of the subject) is performed (step 403). The operations such as image analysis is performed on the basis of the tomogram after the correction for movement (steps 405-407).
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了获得与被摄体不移动的情况相同的分析精度，即使当拍摄期间拍摄对象移动时，当基于所提供的断层图像进行诸如图像分析的操作时通过计算机断层摄影诊断装置。解决方案：从断层图像输入装置输入用于血液分析的对象的断层图像（步骤401），并且基于每个阶段的图像确定对象的移动的存在或不存在（步骤402 ）。当存在对象的移动时，执行移动校正（即，用于获得等于与被检体不移动的情况下获得的断层图像相同的校正）（步骤403）。基于运动校正后的断层图像进行图像分析等操作（步骤405-407）。版权所有（C）2004，JPO

2. 发明专利

JP2003033344A X-ray rotary photographing apparatus using 2- dimensional x-ray detector 审中-公开
标题翻译：使用2-尺寸X射线探测器的X射线摄影摄影装置
公开(公告)号：JP2003033344A
公开(公告)日：2003-02-04
申请号：JP2001220089
申请日：2001-07-19
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： OMI YASUO , UEDA TAKESHI
IPC分类号： A61B6/02 , A61B6/00
摘要： PROBLEM TO BE SOLVED: To provide an X-ray rotary photographing apparatus using a 2-dimen sional X-ray detector that can obtain high quality images by improving S/N of reorganized images without increasing a gross X-ray exposure quantity illumi nated to a subject to be examined by optimizing an input signal level to the 2-dimensional X-ray detector in each photographing angle.
SOLUTION: The apparatus is equipped with an operation part having an external input device to input not only setting and enumerations of photographing conditions, but also a variety of operation commands. Rotary photographing is carried out on the basis of such photographing parameters set by the operation part. From a preliminary photographing parameter which is obtained in a preliminary photographing before the regular photographing and a photographing parameter for the regular photographing which is inputted from the external input device, an initial value of the photographing parameter is obtained 303 by an arithmetic unit of the operation part, and such initial value of the photographing parameter is set to perform a rotary photographing 304.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种使用二维X射线检测器的X射线旋转拍摄装置，其可以通过改善重组图像的S / N而不增加总体X射线曝光量而获得高质量图像通过在每个拍摄角度中优化对二维X射线检测器的输入信号电平来检查被摄体。解决方案：该装置配备有具有外部输入装置的操作部件，不仅输入拍摄条件的设置和枚举，还输入各种操作命令。基于由操作部设定的拍摄参数进行旋转拍摄。从在正常拍摄之前的初步拍摄中获得的初步拍摄参数和从外部输入装置输入的用于常规拍摄的拍摄参数，通过操作的运算单元303获得拍摄参数的初始值部分，并且设置拍摄参数的这种初始值以执行旋转拍摄304。

3. 发明专利

JP2007044275A Multi-energy x-ray ct 有权
标题翻译：多功能X射线CT
公开(公告)号：JP2007044275A
公开(公告)日：2007-02-22
申请号：JP2005232060
申请日：2005-08-10
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： OMI YASUO , MIYAZAKI YASUSHI , HIROKAWA KOICHI
IPC分类号： A61B6/03
CPC分类号： A61B6/482
摘要： PROBLEM TO BE SOLVED: To create a highly precise reconstruction image from projection data collected using a plurality of X-ray energies in an X-ray computed tomograph (CT).
SOLUTION: This multi-energy X-ray computed tomograph receives the projection data of a first energy spectrum and a second energy spectrum (S301), creates a tomogram relative to the first energy spectrum and the second energy spectrum (S302), calculates a mixing ratio of the tomogram created from the first energy spectrum and the tomogram created from the second energy spectrum (S303), and generates and displays a synthesis image from the tomogram created from the first energy spectrum and the tomogram created from the second energy spectrum according to the mixing ratio (S304-306).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：从在X射线计算机断层摄影（CT）中使用多个X射线能量收集的投影数据创建高精度的重建图像。解决方案：该多能X射线计算机断层摄影机接收第一能谱和第二能谱的投影数据（S301），产生相对于第一能谱和第二能谱的层析图（S302）计算从第一能谱产生的断层图像和从第二能谱产生的断层图像的混合比（S303），并且从由第一能量谱和从第二能量产生的断层图像产生的断层图像中生成并显示合成图像频谱根据混合比（S304-306）。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2005073764A System and method for angiographic measuring and imaging obtained by combining x-ray ct apparatus and ultrasonography 审中-公开
标题翻译：通过组合X射线CT装置和超声波扫描获得的图像测量和成像的系统和方法
公开(公告)号：JP2005073764A
公开(公告)日：2005-03-24
申请号：JP2003304959
申请日：2003-08-28
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MIYAZAKI YASUSHI , KANDA HIROSHI , OMI YASUO
IPC分类号： A61B6/03 , A61B8/06
CPC分类号： A61B6/507
摘要： PROBLEM TO BE SOLVED: To provide a system and a method for angiographic measuring and imaging which is obtained by combining an X-ray CT apparatus and an ultrasonography for assuring measurement of a contrast medium time-density curve (TDC) while reducing an unnecessary exposure of a subject. SOLUTION: In a contrast study by the X-ray CT apparatus, a probe of the ultrasonography is placed at a monitoring site which is the other region concerned in the proximity of a flow passage of a contrast medium visualized before an imaging site is visualized and is upstream of the imaging site as the region concerned of the subject. An ultrasonographic contrast medium is infused prior to the infusion of an X-ray contrast medium to the subject. The probe of the ultrasonography detects that the ultrasonographic contrast medium reaches the monitoring site, and the reach of the ultrasonographic contrast medium is transmitted to the X-ray CT apparatus as a signal to determine the timing to start measurement imaging of the contrast study by the X-ray CT apparatus. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于血管造影测量和成像的系统和方法，其通过组合X射线CT装置和超声波检查来确保造影剂时间密度曲线（TDC）的测量，同时减少受试者不必要的暴露。解决方案：在通过X射线CT装置的对比研究中，超声检查的探针被放置在监测位置，监测位置是在成像位点之前可视化的造影剂的流路附近的有关的另一区域是可视化的，并且是作为受试者相关区域的成像部位的上游。在向对象输注X射线造影剂之前输注超声波造影剂。超声检查检测超声造影剂到达监测点，超声造影剂的传播范围作为信号传输到X射线CT装置，以确定对比研究的计时成像时间 X射线CT装置。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2006136506A Image processor 有权
标题翻译：图像处理器
公开(公告)号：JP2006136506A
公开(公告)日：2006-06-01
申请号：JP2004328683
申请日：2004-11-12
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： A61B5/00 , A61B5/055 , A61B6/03 , G06T3/00
摘要： PROBLEM TO BE SOLVED: To automatically set the region of interest (ROI) with high objectivity and reproducibility without losing excellent morphological information that CT images and MR images have for an image processor provided with a function of setting the ROI on the image of a biological internal organ. SOLUTION: The image processor comprises: a reference image preparation means 3 for preparing an internal organ image to be a reference for the biological internal organ; an ROI template preparation means 4 for preparing an ROI template to be the base of the setting of the ROI onto the biological internal organ image by setting a standard region of interest in the reference internal organ image prepared in the reference image preparation means; and an ROI shape conversion means 6 for converting a shape so that the ROI template is suited to the biological internal organ image. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了以高客观性和重现性自动设置感兴趣区域（ROI），而不会丢失CT图像和MR图像对于具有设置图像上的ROI的功能的图像处理器的优秀形态信息的生物内脏器官。解决方案：图像处理器包括：参考图像准备装置3，用于准备作为生物内脏的参考的内脏器官图像; ROI模板准备装置4，用于通过在参考图像准备装置中准备的参考内脏器官图像中设置感兴趣的标准区域来将ROI模板准备为生物内脏器官图像上的ROI设置的基础; 以及用于转换形状以使得ROI模板适合于生物内脏器官图像的ROI形状转换装置6。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2004097665A Blood flow dynamics analysis apparatus 有权
公开(公告)号：JP2004097665A
公开(公告)日：2004-04-02
申请号：JP2002266475
申请日：2002-09-12
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： OMI YASUO , MIYAZAKI YASUSHI , AOYANAGI MASAHIKO
IPC分类号： G01R33/32 , A61B5/055 , A61B6/00 , A61B6/03 , G06T7/00
CPC分类号： A61B5/026 , A61B5/7257 , A61B6/481 , A61B6/504 , A61B6/507 , G06T7/0012 , G06T2207/30101
摘要： PROBLEM TO BE SOLVED: To provide a blood flow dynamics analysis apparatus for acquiring biological function information on an organ to be analyzed from a tomogram offered by a computer tomographic diagnosis apparatus, the blood flow dynamics analysis apparatus being capable of acquiring the biological function information quantitatively at a low imaging rate, and in particular, capable of acquiring the biological function information with as short operation time as possible.
SOLUTION: A time-density curve of a feeding artery and a time-density curve of each tissue are transformed by Fourier transformation on the basis of a tomogram acquired by dynamic photographing (steps 901 and 904). An inverted filter is calculated from the Fourier transformation of the time-density curve of the feeding artery (step 902) and a transfer function of each tissue is acquired by multiplying the Fourier transformation of the time-density curve of the each tissue by the inverted filter (steps 905 and 906). Biological function information is then calculated using the transfer function of the each tissue (step 907).
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2006326078A Blood flow dynamic analysis device, x-ray ct system, mri system, and blood flow dynamic analysis program 有权
标题翻译：血流动态分析装置，X射线CT系统，MRI系统和血液流动动态分析程序
公开(公告)号：JP2006326078A
公开(公告)日：2006-12-07
申请号：JP2005155896
申请日：2005-05-27
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： A61B6/03 , A61B5/055
CPC分类号： A61B6/507
摘要： PROBLEM TO BE SOLVED: To increase the quantitative precision by removing affections of a delay or a dispersion without increasing labor or burden of an operator in a blood flow dynamic analysis.
SOLUTION: An artery inputting function and a time-density curve in each noted pixel are determined from a tomographic image which is photographed by a medical image photographing device (S401 to 407). For each noted image element, a correction parameter for correcting a slippage in blood flow reaching time or a dullness in the shape of the time-density curve is calculated (S408). From the correction parameter, the artery inputting function is corrected for each noted image element (S409). A transmission function is determined from the artery inputting function and the time-density curve for each attention pixel after the correction (S410), and living body functional information is formed (S412).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过消除延迟或分散的影响而不增加操作者在血流动力学分析中的劳动或负担来提高定量精度。解决方案：由医疗图像拍摄装置拍摄的断层图像确定每个所述像素中的动脉输入功能和时间密度曲线（S401〜407）。对于每个所述的图像元素，计算用于校正血流到达时间的滑动的校正参数或时间密度曲线的形状的钝度（S408）。根据校正参数，针对每个所述图像元素校正动脉输入功能（S409）。从动脉输入功能和校正后的每个关注像素的时间密度曲线确定透射功能（S410），形成生物体功能信息（S412）。版权所有（C）2007，JPO＆INPIT

8. 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

9. 发明专利

JP2006239049A X-RAY CT APPARATUS 审中-公开
公开(公告)号：JP2006239049A
公开(公告)日：2006-09-14
申请号：JP2005056911
申请日：2005-03-02
申请人： HITACHI MEDICAL CORP
发明人： OMI YASUO , MIYAZAKI YASUSHI
IPC分类号： A61B6/03 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus capable of quickly correcting displacement of an image caused by a body movement and reducing the exposure dose without sacrificing time resolution and an S/N ratio when collecting projection data in an imaging method collecting time changes of CT values in a same cross section, namely, a dynamic imaging. SOLUTION: A computing part 7 of this X-ray CT apparatus 1 detects displacement of the projection data and reconstruction images by a displacement detecting means 35, corrects the displacement of the projection data and the reconstruction images whose displacement is detected by a displacement correction means 37, adding and averaging the projection data and the reconstruction images in the time direction by an adding and averaging means 39, and creates the projection data and the reconstruction images in respective time phases. The displacement of the projection data is detected based on profiles etc., of the projection data while the displacement of the reconstruction images are detected based on differences in image moments. COPYRIGHT: (C)2006,JPO&NCIPI

10. 发明专利

JP2003225234A BLOOD STREAM KINETICS ANALYZING DEVICE 审中-公开
公开(公告)号：JP2003225234A
公开(公告)日：2003-08-12
申请号：JP2002025309
申请日：2002-02-01
申请人： HITACHI MEDICAL CORP
发明人： OMI YASUO , MIYAZAKI YASUSHI
IPC分类号： G01R33/48 , A61B5/055 , A61B6/03 , G06T1/00 , G06T5/00 , G06T5/20 , H04N1/409
摘要： PROBLEM TO BE SOLVED: To favorably remove noises without reducing the resolution of a functional image more than being required when the information of a blood stream kinetics is obtained from a tomographic image. SOLUTION: Regarding the tomographic image of a subject, a matrix size determining parameter for a peak value or an SD value or the like is calculated from a time-density curve which is extracted for each picture element. Then, an image filter (a filter having an optimal matrix size and a weighting or the like) corresponding to the parameter is determined (a step S201 to a step S206). Then, a smoothing process is performed by using the optimal image filter which is determined for each picture element (a step S207). This process is performed for all picture elements of the tomographic image, and the functional image is prepared. COPYRIGHT: (C)2003,JPO

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