公开(公告)号：US20070195932A1

公开(公告)日：2007-08-23

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： H05G1/64

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。

公开(公告)号：US20060082598A1

公开(公告)日：2006-04-20

申请号：US11292355

申请日：2005-12-02

申请人： Satoru Ohishi ,  Kunio Aoki

发明人： Satoru Ohishi ,  Kunio Aoki

IPC分类号： G09G5/00

CPC分类号： A61B6/481 ,  A61B5/055 ,  A61B6/12 ,  A61B6/466 ,  A61B6/469 ,  A61B6/504 ,  G06F19/00 ,  G06F19/321 ,  G06F19/3468 ,  G06T2211/404

摘要： In a storing unit of a medical image processing apparatus, first 3D image corresponding to a first period and second 3D image data corresponding to a second period are stored. The first 3D image data corresponds to a period before contrast agent injection operation and/or therapeutic operation. The second 3D image data corresponds to a period after the contrast agent injection operation and/or therapeutic operation. A 3D subtracting unit subtracts the first 3D image data from the second 3D image data. In 3D subtraction image data, a portion having undergone a change due to contrast agent injection operation and/or therapeutic operation is emphasized. A pseudo 3D image data generating unit generates pseudo 3D image data on the basis of 3D subtraction image data. A displaying unit displays the pseudo 3D image data.

摘要翻译： 在医用图像处理装置的存储单元中，存储与第一期间对应的第一3D图像和与第二期间对应的第二3D图像数据。 第一3D图像数据对应于造影剂注射操作和/或治疗操作之前的时段。 第二3D图像数据对应于造影剂注射操作和/或治疗操作之后的时间段。 3D减法单元从第二3D图像数据中减去第一3D图像数据。 在3D减影图像数据中，强调了由于造影剂注射操作和/或治疗操作而发生变化的部分。 伪3D图像数据生成单元基于3D减法图像数据生成伪3D图像数据。 显示单元显示伪3D图像数据。

公开(公告)号：US06845142B2

公开(公告)日：2005-01-18

申请号：US10175780

申请日：2002-06-21

申请人： Satoru Ohishi

发明人： Satoru Ohishi

IPC分类号： A61B6/02 ,  A61B6/00 ,  A61B6/03 ,  G06T1/00 ,  G06T5/00 ,  G06T11/00

CPC分类号： A61B6/481 ,  A61B6/482 ,  A61B6/504 ,  A61B6/5258 ,  G06T11/005 ,  G06T2211/404 ,  Y10S378/901

摘要： An image processing apparatus is provided for processing a plurality of sets of projection data acquired by radiating an X-ray onto an object in a multitude of directions. The apparatus has a correcting unit and a reconstructing unit. The correcting unit corrects the projection data with regard to beam hardening of the projection data. The beam hardening is caused due to a contrast agent injected into the object. For example, the correcting unit includes a correction table defining a correcting value to a change in densities of a region in which the contrast agent is present and corrects the projection data on the basis of the correcting value obtained from the correction table. The reconstructing unit reconstructs the corrected projection data into an image of the object. Thus, artifacts due to beam hardening resultant from use of the contrast agent can be avoided.

摘要翻译： 提供一种图像处理装置，用于处理通过在多个方向上将X射线照射到对象上而获得的多组投影数据。 该装置具有校正单元和重建单元。 校正单元校正关于投影数据的光束硬化的投影数据。 由于注射到物体中的造影剂引起光束硬化。 例如，校正单元包括校正表，其将修正值定义为存在造影剂的区域的密度变化，并且根据从校正表获得的校正值来校正投影数据。 重建单元将校正的投影数据重建为对象的图像。 因此，可以避免由于使用造影剂而导致的束硬化造成的伪影。

公开(公告)号：US06721590B2

公开(公告)日：2004-04-13

申请号：US09488673

申请日：2000-01-21

申请人： Satoru Ohishi ,  Kunio Aoki

发明人： Satoru Ohishi ,  Kunio Aoki

IPC分类号： A61B505

CPC分类号： A61B6/481 ,  A61B5/055 ,  A61B6/12 ,  A61B6/466 ,  A61B6/469 ,  A61B6/504 ,  G06F19/00 ,  G06F19/321 ,  G06F19/3468 ,  G06T2211/404

摘要： In a storing unit of a medical image processing apparatus, first 3D image corresponding to a first period and second 3D image data corresponding to a second period are stored. The first 3D image data corresponds to a period before contrast agent injection operation and/or therapeutic operation. The second 3D image data corresponds to a period after the contrast agent injection operation and/or therapeutic operation. A 3D subtracting unit subtracts the first 3D image data from the second 3D image data. In 3D subtraction image data, a portion having undergone a change due to contrast agent injection operation and/or therapeutic operation is emphasized. A pseudo 3D image data generating unit generates pseudo 3D image data on the basis of 3D subtraction image data. A displaying unit displays the pseudo 3D image data.

摘要翻译： 在医用图像处理装置的存储单元中，存储与第一期间对应的第一3D图像和与第二期间对应的第二3D图像数据。 第一3D图像数据对应于造影剂注射操作和/或治疗操作之前的时段。 第二3D图像数据对应于造影剂注射操作和/或治疗操作之后的时间段。 3D减法单元从第二3D图像数据中减去第一3D图像数据。 在3D减影图像数据中，强调了由于造影剂注射操作和/或治疗操作而发生变化的部分。 伪3D图像数据生成单元基于3D减法图像数据生成伪3D图像数据。 显示单元显示伪3D图像数据。

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。

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。

公开(公告)号：US08463013B2

公开(公告)日：2013-06-11

申请号：US12756553

申请日：2010-04-08

申请人： Satoru Ohishi

发明人： Satoru Ohishi

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： A61B6/481 ,  A61B6/4441 ,  A61B6/466 ,  A61B6/504 ,  A61B6/5217 ,  A61B6/5235

摘要： According to one embodiment, an X-ray diagnosis apparatus comprises a C-arm, a support mechanism rotatably supporting the C-arm, a rotation driving unit driving rotation of the C-shaped arm, an X-ray tube mounted on the C-arm, an X-ray detector mounted on the C-arm, a control unit controlling the X-ray tube and the X-ray detector, a storage unit storing two-dimensional images generated, a first reconstruction processing unit reconstructing first three-dimensional images respectively corresponding to a plurality of cardiac phases based on acquired two-dimensional images, a positional shift amount calculation unit calculating positional shift amounts respectively corresponding to cardiac phases based on the first three-dimensional images, and a second reconstruction processing unit reconstructing a single second three-dimensional image with a reduced positional shift based on the plurality of acquired two-dimensional images by using the calculated positional shift amounts.

摘要翻译： 根据一个实施例，X射线诊断装置包括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， 臂，安装在C形臂上的X射线检测器，控制X射线管和X射线检测器的控制单元，存储所生成的二维图像的存储单元，第一重建处理单元，重建第一立体图像 基于获取的二维图像分别对应于多个心脏相位的图像，位置偏移量计算单元，基于第一三维图像计算分别对应于心脏相位的位置偏移量;以及第二重建处理单元，重建单个 通过使用计算出的位置偏移量，基于多个获取的二维图像具有减小的位置偏移的第二三维图像。

公开(公告)号：US20110096894A1

公开(公告)日：2011-04-28

申请号：US12904519

申请日：2010-10-14

申请人： Hisayuki Uehara ,  Reiko Hashimoto ,  Yoshiyasu Hayashi ,  Kunitoshi Matsumoto ,  Satoru Ohishi

发明人： Hisayuki Uehara ,  Reiko Hashimoto ,  Yoshiyasu Hayashi ,  Kunitoshi Matsumoto ,  Satoru Ohishi

IPC分类号： A61B6/02

CPC分类号： A61B6/4452 ,  A61B6/035 ,  A61B6/4021 ,  A61B6/4233 ,  A61B6/4266 ,  A61B6/4429

摘要： According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, first detector, second detector, arm, sliding mechanism, tilting mechanism, and control unit. The X-ray tube includes an anode to generate X-rays upon receiving electrons. The first detector has the first pixel size. The second detector has the second pixel size smaller than the first pixel size. The arm pivotally supports the X-ray tube, first detector, and second detector. The sliding mechanism slidably supports the first and second detectors so as to irradiate one of the first and second detectors with the X-rays generated by the X-ray tube. The tilting mechanism tiltably supports the X-ray tube to change the size of an effective X-ray focal spot on the anode. The control unit controls the sliding of the first and second detectors by the sliding mechanism upon interlocking with the tilting of the X-ray tube by the tilting mechanism.

摘要翻译： 根据一个实施例，X射线诊断装置包括X射线管，第一检测器，第二检测器，臂，滑动机构，倾斜机构和控制单元。 X射线管包括在接收电子时产生X射线的阳极。 第一个检测器具有第一个像素大小。 第二检测器具有比第一像素尺寸小的第二像素尺寸。 手臂枢转地支撑X射线管，第一检测器和第二检测器。 滑动机构可滑动地支撑第一和第二检测器，以便用X射线管产生的X射线照射第一和第二检测器中的一个。 倾斜机构可倾斜地支撑X射线管以改变阳极上的有效X射线焦斑的尺寸。 当通过倾斜机构与X射线管的倾斜互锁时，控制单元通过滑动机构来控制第一和第二检测器的滑动。

公开(公告)号：US20100195893A1

公开(公告)日：2010-08-05

申请号：US12700195

申请日：2010-02-04

申请人： Ko FUCHIGAMI ,  Satoru Ohishi ,  Yoshiyasu Hayashi

发明人： Ko FUCHIGAMI ,  Satoru Ohishi ,  Yoshiyasu Hayashi

IPC分类号： G06K9/00

CPC分类号： A61B5/02007 ,  A61B6/469 ,  A61B6/501 ,  G06F19/00 ,  G06T7/11 ,  G06T7/136 ,  G06T7/174 ,  G06T2207/10081 ,  G06T2207/20224 ,  G06T2207/30101

摘要： A first generating unit generates a plurality of blood vessel image data sets at the plurality of imaging angles by performing subtraction processing for the plurality of mask image data sets and the plurality of contrast image data sets. A second generating unit generates a blood vessel volume data set including an artery region, a vein region, and a capillary vessel region by performing reconstruction processing for the plurality of blood vessel image data sets. A third generating unit generates a capillary vessel volume data set associated with the capillary vessel region by removing the artery region and the vein region from the blood vessel volume data set. A fourth generating unit generates a capillary vessel image data set by performing three-dimensional image processing for the capillary vessel volume data set.

摘要翻译： 第一生成单元通过对多个掩模图像数据组和多个对比度图像数据组进行减法处理，在多个成像角度生成多个血管图像数据组。 第二生成单元通过对多个血管图像数据组进行重建处理，生成包括动脉区域，静脉区域和毛细血管区域的血管容量数据组。 第三生成单元通过从血管容积数据集中移除动脉区域和静脉区域而产生与毛细血管区域相关联的毛细血管容积体数据集。 第四生成单元通过对毛细血管容积数据组进行三维图像处理来生成毛细管血管图像数据。

公开(公告)号：US07756324B2

公开(公告)日：2010-07-13

申请号：US11282657

申请日：2005-11-21

申请人： Satoru Ohishi

发明人： Satoru Ohishi

IPC分类号： G06K9/00

CPC分类号： A61B6/481 ,  A61B6/504 ,  A61B6/583

摘要： A three-dimensional image processing apparatus includes a storage unit that stores data of a plurality of mask images obtained by radiographing a subject to be examined in a different direction before contrast medium injection and data of a plurality of contrast images obtained by radiographing the subject to be examined in a different direction after the contrast medium injection, a reconstruction unit that reconstructs first three-dimensional image data from the plurality of mask image data and second three-dimensional image data from the plurality of contrast image data, a positional deviation correcting unit that corrects positional deviation of the first three-dimensional image with respect to the second three-dimensional image based on comparison between an anatomical structure of the first and second three-dimensional image data, and creates third three-dimensional image data, and a processing unit that performs subtraction between the second and the third three-dimensional data and creates fourth three-dimensional image data.

摘要翻译： 三维图像处理装置包括：存储单元，其存储通过在造影剂注入之前以不同方向对要被检查的被检体进行射线照相而获得的多个掩模图像的数据，以及通过将对象成像获得的多个对比图像的数据 在造影剂注射后以不同方向进行检查，重建单元，其从多个对比图像数据中的多个掩模图像数据和第二三维图像数据中重构第一三维图像数据，位置偏差校正单元 其基于第一和第二三维图像数据的解剖结构之间的比较来校正第一三维图像相对于第二三维图像的位置偏差，并且创建第三三维图像数据，以及处理 在第二和第三三维数据之间执行减法的单元 并创建第四个三维图像数据。