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1. 发明授权

US08929633B2 Diagnostic X-ray system and method 有权
标题翻译：诊断X射线系统和方法
公开(公告)号：US08929633B2
公开(公告)日：2015-01-06
申请号：US12752518
申请日：2010-04-01
申请人： Satoru Ohishi
发明人： Satoru Ohishi
IPC分类号： G06K9/00 , A61B6/00 , A61B6/03
CPC分类号： A61B6/504 , A61B6/032 , A61B6/4441 , A61B6/466 , A61B6/481 , A61B6/503 , A61B6/507 , A61B6/5235 , A61B6/541
摘要： A diagnostic x-ray system includes a CT-image projection unit obtains a third perfusive-flow image by projecting a second perfusive-flow image obtained by computed tomography in the same direction as a projection direction in which an X-ray is projected toward a test subject to obtain a first perfusive-flow image. A positioning unit obtains positioning information by performing positioning of the first perfusive-flow image and the third perfusive-flow image. A perfusive-flow index calculation unit calculates a first perfusive-flow index from the first perfusive-flow image, and calculates a second perfusive-flow index from the third perfusive-flow image. A comparative-index calculation unit calculates a comparative index based on the first perfusive-flow index and the second perfusive-flow index, by comparing the first perfusive-flow index with the second perfusive-flow index, based on the positioning information obtained by the positioning unit.
摘要翻译：诊断X射线系统包括CT图像投影单元，通过将计算机断层摄影获得的第二灌注流图像投影到与向X射线投影的X射线的投影方向相同的方向上获得第三灌注流图像测试受试者获得第一个灌注流图像。定位单元通过执行第一灌注流图像和第三灌注流图像的定位来获得定位信息。灌注流指数计算单元从第一灌注流图像计算第一灌注流指数，并从第三灌注流图像计算第二灌注流指数。比较指标计算单元基于第一灌注流指数和第二灌注流指数，通过将第一灌注流指数与第二灌注流指数进行比较，基于由第一灌注流指数定位单元

2. 发明申请

US20130010924A1 MEDICAL IMAGE PROCESSING APPARATUS 有权
标题翻译：医学图像处理设备
公开(公告)号：US20130010924A1
公开(公告)日：2013-01-10
申请号：US13618958
申请日：2012-09-14
申请人： Satoru OHISHI , Hisato TAKEMOTO
发明人： Satoru OHISHI , Hisato TAKEMOTO
IPC分类号： A61B6/02
CPC分类号： A61B6/022 , A61B6/12 , A61B6/4014 , A61B6/4028 , A61B6/466 , A61B6/481 , A61B6/487 , A61B6/5205
摘要： A medical image processing apparatus according to an embodiment includes: an imaging unit configured to image an affected area in two directions using X-rays; a fluoroscopic image generating unit configured to generate two X-ray fluoroscopic images corresponding to the two directions, on a basis of imaging signals outputted from the imaging unit; a rendering image generating unit configured to project the affected area contained in three-dimensional image data acquired in advance, in two directions according to a same X-ray geometry as that used for imaging the X-ray fluoroscopic images, to thereby generate two affected area rendering images; and an image combining unit configured to combine the X-ray fluoroscopic images with the affected area rendering images for each corresponding direction, to thereby generate combined parallax images in two parallax directions corresponding to the two directions, and to output the two generated combined parallax images to a 3D display apparatus.
摘要翻译：根据实施例的医疗图像处理装置包括：成像单元，其被配置为使用X射线在两个方向上对受影响的区域进行成像; 荧光镜图像生成单元，其基于从所述摄像单元输出的摄像信号，生成与所述两个方向对应的2个X射线透视图像; 渲染图像生成单元，其被配置为根据与用于对X射线荧光镜图像成像的X射线几何相同的X方向投影在两个方向上预先获取的三维图像数据中包含的受影响区域，从而生成两个受影响的区域渲染图像; 以及图像合成单元，被配置为将X射线透视图像与对应方向的影像区域进行再现图像组合，从而在对应于两个方向的两个视差方向上生成组合的视差图像，并输出所生成的两个组合视差图像涉及3D显示装置。

3. 发明申请

US20100208969A1 ROTATION CENTER IDENTIFYING METHOD, RING ARTIFACT CORRECTION METHOD, ROTATION CENTER IDENTIFYING APPARATUS, X-RAY DIAGNOSTIC APPARATUS, RECORDING MEDIUM ON WHICH PROGRAM FOR EXECUTING ROTATION CENTER IDENTIFICATION IS RECORDED AND RECORDING MEDIUM ON WHICH PROGRAM FOR EXECUTING RING ARTIFACT CORRECTION IS RECORDED 有权
标题翻译：旋转中心识别方法，环形矫正方法，旋转中心识别装置，X射线诊断装置，执行旋转中心识别程序的记录介质记录和记录执行环锻炼校正程序的记录介质
公开(公告)号：US20100208969A1
公开(公告)日：2010-08-19
申请号：US12388788
申请日：2009-02-19
申请人： Satoru Ohishi , Clay Christopher Smith
发明人： Satoru Ohishi , Clay Christopher Smith
IPC分类号： G06K9/00 , G06K9/40
CPC分类号： A61B6/032 , A61B6/4441 , A61B6/5258 , A61B6/5264 , G06T5/003 , G06T7/73 , G06T2207/10081 , G06T2207/20201 , G06T2207/30004
摘要： The influences of the vibrations and the like of a rotational radiography system are corrected with respect to a projection image for each projection direction which contains an artificial artifact, and volume data containing only a ring artifact is generated by image reconstruction using the projection images. A ring center is determined by using this volume data, and polar coordinate conversion of an actual radiographed image is executed by using the ring center as an origin, thereby extracting a signal (ring artifact) parallel to an angular axis.
摘要翻译：相对于包含人造假象的每个投射方向的投影图像校正旋转射线照相系统的振动等的影响，并且通过使用投影图像的图像重建来生成仅包含环形伪影的体数据。通过使用该体数据确定环中心，并且通过使用环中心作为原点来执行实际拍摄图像的极坐标转换，从而提取与角轴平行的信号（环形伪像）。

4. 发明申请

US20100208870A1 SCATTERED RADIATION CORRECTION METHOD AND SCATTERED RADIATION CORRECTION APPARATUS 有权
标题翻译：散射辐射校正方法和散射辐射校正装置
公开(公告)号：US20100208870A1
公开(公告)日：2010-08-19
申请号：US12388947
申请日：2009-02-19
申请人： Yu Zou , Michael D. Silver , Satoru Ohishi , Kozo Sato
发明人： Yu Zou , Michael D. Silver , Satoru Ohishi , Kozo Sato
IPC分类号： G01N23/201 , G06K9/00
CPC分类号： A61B6/032 , A61B6/5282 , G06T5/003 , G06T5/50 , G06T2207/10081 , G06T2207/20224 , G06T2207/30004
摘要： Scattered radiation is estimated by using a reduced image generated from a projection image, and the scattered radiation image of the projection image is acquired by enlargement processing. The scattered radiation correction of the projection image is executed by subtracting the obtained scattered radiation image from the projection image. In addition, when a primary X-ray image and a scattered radiation image in each projection direction are to be obtained by sequential approximation calculation, a primary X-ray image which has already been identified in an adjacent projection direction is used as a first estimated value (initially set value) in next sequential calculation.
摘要翻译：通过使用从投影图像生成的缩小图像来估计散射辐射，并且通过放大处理获取投影图像的散射辐射图像。通过从投影图像中减去所获得的散射辐射图像来执行投影图像的散射辐射校正。此外，当通过顺序近似计算要获得每个投影方向上的主X射线图像和散射辐射图像时，将已经在相邻投影方向上识别的主X射线图像用作第一估计值（初始设定值）。

5. 发明授权

US07551721B2 X-ray diagnostic apparatus, image processing apparatus, and program 有权
标题翻译： X射线诊断装置，图像处理装置和程序
公开(公告)号：US07551721B2
公开(公告)日：2009-06-23
申请号：US11676885
申请日：2007-02-20
申请人： Takeshi Nakaura , Satoru Ohishi
发明人： Takeshi Nakaura , Satoru Ohishi
IPC分类号： A61B6/00
CPC分类号： A61B6/504 , A61B5/7289 , A61B6/5264 , A61B6/541 , A61B8/00 , A61B8/5276 , G06T5/50 , G06T7/0016 , G06T7/20 , G06T2207/10116 , G06T2207/20224 , G06T2207/30101 , H04N5/3205
摘要： An X-ray diagnostic apparatus includes an image generating unit which generates a plurality of X-ray images by repeatedly radiographing a subject before and after injection of a contrast medium, a region detecting unit which detects a non-contrast region from a plurality of mask images before injection of the contrast medium and a plurality of contrast images after injection of the contrast medium, which constitute the plurality of X-ray images, a mask selecting unit which separately selects one mask image with respect to each of the contrast images on the basis of a correlation between the contrast image and the mask image upon localization to the non-contrast region, and a subtraction processing unit which generates a subtraction image by performing subtraction between the contrast image and the selected mask image.
摘要翻译：一种X射线诊断装置包括：图像生成单元，其通过在注射造影剂之前和之后反复放射对象来生成多个X射线图像;区域检测单元，其从多个掩模检测非对比度区域在注射造影剂之前的图像和在注入构成多个X射线图像的造影剂之后的多个对比度图像;掩模选择单元，其针对每个对比图像分别选择一个掩模图像在对比度区域定位时对比度图像和掩模图像之间的相关性的基础;以及减法处理单元，其通过在对比度图像和所选择的掩模图像之间进行减法来生成减法图像。

6. 发明授权

US07269246B2 X-ray angiography apparatus 有权
标题翻译： X射线血管造影装置
公开(公告)号：US07269246B2
公开(公告)日：2007-09-11
申请号：US11558157
申请日：2006-11-09
申请人： Satoru Ohishi
发明人： Satoru Ohishi
IPC分类号： H05G1/64
CPC分类号： A61B6/504 , A61B6/4441 , A61B6/481
摘要： An X-ray angiography apparatus includes a C-arm, a support mechanism which rotatably supports the C-arm, a rotation driving unit which drives rotation of the C-arm, an X-ray tube mounted on the C-arm, an X-ray detector mounted on the C-arm in a direction to face the X-ray tube, and a rotation control unit which controls the X-ray detector and the rotation driving unit to make the angle sampling pitch of contrast images become larger than that of mask images.
摘要翻译： X射线血管造影装置包括C形臂，可旋转地支撑C形臂的支撑机构，驱动C形臂的旋转的旋转驱动单元，安装在C形臂上的X射线管，X 射线检测器，以与X射线管相对的方向安装在C臂上;以及旋转控制单元，其控制X射线检测器和旋转驱动单元，使得对比度图像的角度采样间距变得比的面膜图像。

7. 发明授权

US06990229B2 Image processing device and image processing method 有权
公开(公告)号：US06990229B2
公开(公告)日：2006-01-24
申请号：US10421926
申请日：2003-04-24
申请人： Satoru Ohishi
发明人： Satoru Ohishi
IPC分类号： G06K9/36
CPC分类号： G06T19/00 , A61B5/055 , A61B6/032 , A61B6/5235 , A61B6/5247 , A61B8/00 , A61B8/5238 , G06F19/00 , G06T2219/028 , G06T2219/2004 , G06T2219/2016
摘要： A CT device, an MRI device, an ultrasonic device, or an X-ray device for picturing a 3-D image are connected to a network. A 3-D image is stored in an image database via the network. A first image processing device or a second image processing device obtains a 3-D image from the respective devices via the network. The image processing device can display a plurality of 3-D images concurrently with conditions made uniform with regard to direction of observation, enlargement ratio, scale, etc. Also, the device can display a combined image obtained by combining a plurality of 3-D images. The combined image can be displayed so that overlapping areas and non-overlapping areas are in different colors. In addition, the device can display medical information of use for a diagnosis or an examination together with the plurality of 3-D images displayed with conditions made uniform.

8. 发明申请

US20050286679A1 X-ray diagnostic apparatus and X-ray imaging method 有权
标题翻译： X射线诊断装置和X射线成像方法
公开(公告)号：US20050286679A1
公开(公告)日：2005-12-29
申请号：US11165463
申请日：2005-06-24
申请人： Takuya Sakaguchi , Satoru Ohishi
发明人： Takuya Sakaguchi , Satoru Ohishi
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/4021 , A61B6/4441 , A61B6/541
摘要： Projection data are obtained by using a method for imaging by rotating the first imaging system having an X-ray generating unit 1a and the second imaging system having an X-ray generating unit 1b. The obtained projection data are subjected to a reconstruction process to generate X-ray image data. In this case, a relative angle η0 formed between the imaging systems is setup according to a palmic period T0 of a subject and a rotation velocity Vr of the imaging systems. Thus, the projection data from more directions at a predetermined palmic time-phase are collected without overlapping.
摘要翻译：通过旋转具有X射线产生单元1a的第一成像系统和具有X射线产生单元1b的第二成像系统，通过使用用于成像的方法来获得投影数据。对获得的投影数据进行重构处理，生成X射线图像数据。在这种情况下，根据被摄体的时间周期T 0和成像系统的旋转速度Vr来建立在成像系统之间形成的相对角度θ0。因此，在不重叠的情况下收集在预定的时间相位上来自更多方向的投影数据。

9. 发明授权

US09460512B2 Three-dimensional image processing apparatus and reconstruction region specification method 有权
标题翻译：三维图像处理装置和重建区域规范方法
公开(公告)号：US09460512B2
公开(公告)日：2016-10-04
申请号：US11746831
申请日：2007-05-10
申请人： Satoru Ohishi
发明人： Satoru Ohishi
IPC分类号： G06K9/00 , G06T7/00
CPC分类号： G06T7/0042 , G06T7/73 , G06T2207/30101
摘要： A three-dimensional image processing apparatus which obtains a three-dimensional image from a plurality of images from different projection views of a patient which have been obtained by carrying out multiple imaging while rotating around the patient, includes a locating unit to specify a point of one of the plurality of images from different projection views. A searching unit searches a point corresponding to the specified point in the plurality of images from different projection views, on the basis of the specified point. A reconstruction region identification unit identifies a region of a part of a region which can be reconstructed, as a reconstruction region by using the specified point and the searched point. A reconstruction unit obtains a three-dimensional image by reconstructing an image in the identified reconstruction region.
摘要翻译：一种三维图像处理装置，其从通过在围绕患者旋转进行多次成像而获得的来自患者的不同投影视图的多个图像中获得三维图像，包括：定位单元，来自不同投影视图的多个图像中的一个。搜索单元基于指定点，从不同的投影视图中搜索与多个图像中的指定点相对应的点。重建区域识别单元通过使用指定点和搜索点来识别可重建的区域的一部分的区域作为重建区域。重建单元通过重建所识别的重建区域中的图像来获得三维图像。

10. 发明授权

US08467498B2 Image diagnostic apparatus, image processing apparatus, and program 有权
标题翻译：图像诊断装置，图像处理装置和程序
公开(公告)号：US08467498B2
公开(公告)日：2013-06-18
申请号：US11676828
申请日：2007-02-20
申请人： Satoru Ohishi
发明人： Satoru Ohishi
IPC分类号： H05G1/64 , G06K9/36
CPC分类号： A61B6/504
摘要： An image diagnostic apparatus includes a radiography unit which generates a mask image and contrast images before and after the injection of a contrast medium, an image memory which stores the mask image and the contrast images, an ROI identifying unit which sets a region of interest from the mask image and the contrast images, a pixel shift amount detecting unit which detects a pixel shift amount between the mask and the contrast image upon localization to the region of interest, and a processing unit which shifts at least the mask image or the contrast image in accordance with the detected pixel shift amount and performs subtraction between the images.
摘要翻译：图像诊断装置包括：在造影剂注射前后产生掩模图像和对比度图像的放射线照相单元，存储掩模图像和对比图像的图像存储器，设置感兴趣区域的ROI识别单元掩模图像和对比度图像，像素偏移量检测单元，其在定位到感兴趣区域时检测掩模和对比度图像之间的像素偏移量，以及至少移动掩模图像或对比图像的处理单元根据检测出的像素移位量，进行图像之间的减法。

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