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1. 发明专利

JP2007215925A X-ray diagnostic apparatus, image processing apparatus and program 有权
标题翻译： X射线诊断设备，图像处理设备和程序
公开(公告)号：JP2007215925A
公开(公告)日：2007-08-30
申请号：JP2006042665
申请日：2006-02-20
申请人： Takeshi Nakaura , Toshiba Medical Systems Corp , 猛中浦 , 東芝メディカルシステムズ株式会社
发明人： NAKAURA TAKESHI , OISHI SATORU
IPC分类号： A61B6/00 , G06T1/00 , G06T5/50
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： PROBLEM TO BE SOLVED: To reduce a displacement artifact caused by a physical movement of an examinee when performing a subtraction processing between images before and after injection by injecting a contrast medium into the examinee. SOLUTION: The X-ray diagnostic apparatus is equipped with an image generating part 2 which generates a plurality of X-ray images by photographing the examinee repeatedly before and after injection of contrast medium into the examinee, a region identification part 20 which identifies a non-contrast image region from a plurality of mask images before the injection of contrast medium constituting a plurality of X-ray images and a plurality of contrast image after injection, a mask selection part 19 for selecting a mask image for each contrast image based on a correlation between the contrast image and the mask image in non contrast region, and a subtraction processing part 21 for generating a subtraction image by subtracting a contrast image and a selected mask image. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了减少由被检体在通过向造影剂注射造影剂进行注射前后的图像之间进行减法处理时由被检体的物理运动引起的位移伪像。解决方案：X射线诊断装置配备有图像生成部分2，其通过在造影剂注入到受检者之前和之后反复拍摄受检者来产生多个X射线图像，区域识别部分20 在注入构成多个X射线图像的造影剂和注射后的多个对比度图像之前，从多个掩模图像中识别非对比度图像区域，用于为每个对比图像选择掩模图像的掩模选择部分19 基于对比度区域中的对比度图像和掩模图像之间的相关性，以及减法处理部分21，用于通过减去对比度图像和所选择的掩模图像来产生减法图像。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005198330A Image diagnosis apparatus, image processing method, image processing apparatus and storage medium 有权
标题翻译：图像诊断设备，图像处理方法，图像处理设备和存储介质
公开(公告)号：JP2005198330A
公开(公告)日：2005-07-21
申请号：JP2005024123
申请日：2005-01-31
申请人： Takeshi Nakaura , Toshiba Corp , 猛中浦 , 株式会社東芝
发明人： OISHI SATORU , NAKAURA TAKESHI
IPC分类号： A61B6/00 , A61B5/055 , A61B6/03 , A61B8/08 , G06T1/00 , H04N5/325
摘要： PROBLEM TO BE SOLVED: To reduce a displacement artifact caused by physical movement of an examinee when performing subtraction processing between images before and after injection by injecting a contrast medium into the examinee. SOLUTION: In the image diagnosis apparatus which injects a contrast medium into a blood vessel and observes a blood vessel moving image wherein contrast is intensified, a plurality of subtraction methods are included and a subtraction method can be selectively designated for each photographing program. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过将造影剂注射到受检者中，在进行注射之前和之后的图像之间执行减法处理时，减少由受检者的身体移动引起的位移伪像。解决方案：在将造影剂注射到血管中并观察其中对比度增强的血管运动图像的图像诊断装置中，包括多个减法方法，并且可以针对每个拍摄程序选择性地指定减法方法。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004112469A Image diagnostic apparatus, image processing method, image processor, and storage medium 有权
公开(公告)号：JP2004112469A
公开(公告)日：2004-04-08
申请号：JP2002273537
申请日：2002-09-19
申请人： Takeshi Nakaura , Toshiba Corp , 中浦猛 , 株式会社東芝
发明人： OISHI SATORU , NAKAURA TAKESHI
IPC分类号： G01R33/54 , A61B5/055 , A61B6/00 , A61B8/06 , G01R33/28 , H04N5/325
摘要： PROBLEM TO BE SOLVED: To reduce a positional displacement artifact caused by the movement of a body to be inspected by performing subtraction operation over images of the body before and after a contrast enhancement agent is injected into the body.
SOLUTION: An image diagnostic apparatus includes a CPU 9 for dividing a plurality of images continuously collected before and after the injection of a cotrast enhancement agent into the body to be inspected into a plurality of images having no or relatively low contrast-enhancing effects, and a plurality of images having no or relatively high contrast-enhancing effects; a mask selector 19 for selecting one of the plurality of low-contrast images as a mask image for each high contrast image on the basis of a degree of agreement in the similarity of positional displacement between specific one of the low contrast images and one thereof caused by the movement of the body under a test; and a subtraction processor 21 for performing the subtraction operation of the low contrast image selected as the mask image from among a plurality of high contrast images.
COPYRIGHT: (C)2004,JPO

4. 发明申请

US20070195932A1 X-RAY DIAGNOSTIC APPARATUS, IMAGE PROCESSING APPARATUS, AND PROGRAM 有权
标题翻译： X射线诊断设备，图像处理设备和程序
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。

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。

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