公开(公告)号：EP1510972A3

公开(公告)日：2006-05-17

申请号：EP04253316.6

申请日：2004-06-04

申请人： KABUSHIKI KAISHA TOSHIBA ,  Toshiba Medical Systems Corporation

发明人： Ohishi, Satoru

IPC分类号： G06T15/00 ,  G06T11/00

CPC分类号： G06T11/005 ,  A61B6/481 ,  A61B6/504 ,  A61B6/584 ,  G06T2211/404

摘要： A 3D image processing apparatus comprises a storing unit (23) storing mask images corresponding to projection directions associated with a subject contrast images corresponding to the projection directions, a subtracting unit (31) generating subtraction images by subtracting the mask images from the contrast images, a reconstruction unit (33) reconstructing first volume data from the mask images and reconstructs second volume data from the subtraction images, an image processing unit (35) generating a first 3D image representing a bone structure and/or a soft tissue structure from the first volume data, and generates a second 3D image representing a contrasted blood vessel from the second volume data, an image synthesizing unit (34) generating a synthetic image by synthesizing the first 3D image with the second 3D image, and a displaying unit (39) displaying the synthetic image.

公开(公告)号：EP1623739A3

公开(公告)日：2006-04-26

申请号：EP05024826.9

申请日：2004-08-06

申请人： BrainLAB AG

发明人： Vilsmeier, Stefan ,  Schlossbauer, Cornel ,  Erbel, Stephan ,  Labsik, Ulf, Dr.

IPC分类号： A61N5/10

CPC分类号： A61B6/4014 ,  A61B6/032 ,  A61B6/0457 ,  A61B6/584 ,  A61N5/1049 ,  A61N2005/1061

摘要： Die Erfindung betrifft die volumetrischen Bildgebung an einem Strahlentherapiegerät, wobei

ein Körper, von dem ein volumetrischer Bilddatensatz erstellt werden soll, auf der Couch (3) des Strahlentherapiegeräts positioniert wird;
die Couch oder die Liegefläche der Couch oder der Körper selbst um eine raumfeste Achse (4) gedreht wird;
während der Drehung der Couch (3) mehrere Röntgenbilder des Körpers oder eines Teils davon mittels mindestens einem vom Bestrahlungsgerät separaten Strahlungsquellen/Bildaufnehmersystem (1, 2) erstellt und gespeichert werden, dessen Strahlungsverlauf im wesentlichen nicht parallel zu der Achse (4) liegt;
die jeweilige Drehstellung der Couch (3) oder der Liegefläche der Couch (3) bei der Bilderstellung erfasst und dem Bild zugeordnet wird; und bei dem
mittels eines Computersystems (6) durch Bildverarbeitung und -zuordnung aus den Röntgenbildern ein volumetrischer Bilddatensatz des Körpers rekonstruiert wird.

摘要翻译： 本发明涉及放射治疗装置上的体积成像，其中将要从其创建体积图像数据组的身体位于放射治疗装置的床（3）上; 卧榻或床的本体表面或身体本身围绕固定轴线（4）旋转; 沙发上（3）的多个身体或其部分的X射线图像中的由来自照射装置的辐射源/ Bildaufnehmersystem分开的至少一个的装置中的旋转过程中（1，2）创建和存储，辐射路径不平行于所述轴线（4）大致; 在图像创建期间拍摄床（3）或卧榻（3）的躺卧表面的相应旋转位置并将其分配给图像; 并且其中借助于计算机系统（6）通过图像处理和分配从X射线图像中重建身体的体积图像数据集。

公开(公告)号：EP1511421A1

公开(公告)日：2005-03-09

申请号：EP03755198.3

申请日：2003-05-23

申请人： CENTRE NATIONAL DELA RECHERCHE SCIENTIFIQUE (CNRS) ,  Ecole Nationale Supérieure D'Arts et Métiers ENSAM

发明人： SKALLI, Wafa ,  DUMAS, Raphael ,  MITTON, David ,  BATAILLE, Philippe ,  QUIDET, Damien

IPC分类号： A61B6/02 ,  A61B6/00

CPC分类号： A61B6/583 ,  A61B6/02 ,  A61B6/022 ,  A61B6/584 ,  A61B90/36 ,  A61B2090/367 ,  A61B2090/3966 ,  A61B2090/3983

摘要： The invention relates to an RX stereoradiography device comprising a horizontal rotating plate (13) which is optionally translational, characterized in that said plate (13) can be oriented according to two angular positions at 90°, each of which in order to take two photos which are orthogonal in relation to the other, also characterized in that the device also comprises a frame (14) which is joined to the horizontal plate (13) and, optionally, an additional maintenance device (15) for receiving the subject and at least three markers (16) made of a radio-opaque material disposed in a connected manner on the frame (14), one of said markers (1) being identified as the origin of an orthogonal, three-dimensional point of reference and the other markers (16) being disposed in such a way that it is possible to provide, by projection, knowledge of at least one distance value between the markers (16) according to the three axes X, Y and Z of said point of reference, respectively Lx, Ly and H. The invention also relates to the applications, implementation and use thereof.

公开(公告)号：EP1095628A3

公开(公告)日：2001-05-16

申请号：EP00309491.9

申请日：2000-10-27

申请人： Marconi Medical Systems, Inc.

发明人： Yanof, Jeffrey H. ,  Klahr, Paul ,  Ivan, Andy ,  Hoffmeyer, Dave

IPC分类号： A61B19/00

CPC分类号： A61N5/103 ,  A61B6/584 ,  A61B34/10 ,  A61B90/10 ,  A61B90/36 ,  A61N5/1027

摘要： A method (310) and apparatus (1) are provided for planning an executing minimally invasive procedures for in-vivo placement of objects within the body of a patient. The method and apparatus enable non-invasive pre-operation virtual seed placement and dose distribution planning using visualization information showing a patient's anatomy together with (50) a set of single point targets (182) within the patient's body and a corresponding set of trajectories (184) through the skin and body (70) of the patient leading to the selected target points. For enhanced visualization, multi-planar reformatted images (166, 168) are derived from CT (90) image data sets and are angled to always contain the plane (200) of the virtual needle (300) in the pseudo-axial image and its 90 degree slice counterpart. In an implementation stage (120), a stereotactic arm (40) spatially referenced to the patient's data set acts a needle guide (52) and is used to locate preplanned (160) image planes containing virtual seed deposition points.

公开(公告)号：EP0999800A1

公开(公告)日：2000-05-17

申请号：EP99912013.2

申请日：1999-04-22

申请人： Koninklijke Philips Electronics N.V. ,  Philips Corporate Intellectual Property GmbH

发明人： ZYLKA, Waldemar ,  PROKSA, Roland ,  VAN DER BRUG, Willem, P.

IPC分类号： A61B19/00

CPC分类号： A61B6/032 ,  A61B6/04 ,  A61B6/547 ,  A61B6/584

摘要： An imaging modality, in particular a mobile CT system, comprises an imaging system for imaging an object to be examined. The imaging modality is also provided with an image guided surgery system which includes a position measuring system for measuring positions within the object and a data processor for deriving a transformation between positions within the object and the corresponding positions in the image. The position measuring device is also arranged to measure the position of the imaging system and the data processor is arranged to derive the transformation from the position and/or orientation of the imaging system. The position measuring system is notably an optical position measuring system which is arranged to measure the position of the gantry of the CT system. The data processor is arranged to derive the transformation from the measured position of the gantry. A highly accurate result is obtained when a calibration is carried out which links the position of the CT gantry to the position of the scanning plane.

公开(公告)号：EP0930046A2

公开(公告)日：1999-07-21

申请号：EP98308558.0

申请日：1998-10-20

申请人： PICKER INTERNATIONAL, INC.

发明人： Yanof, Jeffrey H. ,  Roos, Pieter Gerhard ,  Freeman, Kenneth L. ,  Deucher, Joseph S. ,  Ivan, Andrew J. ,  Heuscher, Dominic J.

IPC分类号： A61B6/00 ,  A61B6/03 ,  A61B10/00

CPC分类号： A61B90/36 ,  A61B6/027 ,  A61B6/584

摘要： A patient supported on a patient support ( 12 ) is moved into a bore ( 22 ) of a planning imaging device, such as a CT scanner ( 20 ). A three-dimensional diagnostic image in three-dimensional diagnostic image space is generated and stored in a memory. The patient is repositioned outside of the bore with a region of interest in alignment with a real time imaging device, such as a fluoroscopic imaging device ( 40 ). A surgical planning instrument ( 62 ), such as a pointer or biopsy needle, is mounted on an articulated arm ( 60 ). As the instrument is inserted into the region of interest, fluoroscopic images are generated and stored in a memory ( 140 ). The coordinate systems of the CT scanner, the fluoroscopic device, and the surgical instrument are correlated such that the instrument is displayed on both the CT images (134) and the fluoroscopic images (50) , such that cursors move concurrently along the fluoroscopic and CT images, and the like. In a preferred embodiment in which the cursor on the CT image display is at an intersection of transverse, sagittal, and coronal planes, the displayed planes change as the cursor moves coordinating the displayed CT image planes with the position of the cursor on the fluoroscopic image.

摘要翻译： 支撑在患者支撑件（12）上的患者被移入计划成像设备（诸如CT扫描仪（20））的孔（22）中。 生成三维诊断图像空间中的三维诊断图像并将其存储在存储器中。 将患者重新定位在孔的外部，使感兴趣区域与实时成像装置（例如荧光透视成像装置（40））对准。 诸如指针或活检针的外科手术计划仪器（62）安装在关节臂（60）上。 当仪器被插入感兴趣区域时，荧光镜图像被生成并被存储在存储器（140）中。 CT扫描仪，荧光透视设备和外科手术仪器的坐标系统相关联，使得仪器显示在CT图像（134）和荧光透视图像（50）两者上，使得光标同时沿着荧光透视设备和CT 图像等。 在其中CT图像显示器上的光标位于横向，矢状和冠状平面的交叉点处的优选实施例中，所显示的平面随着光标移动而协调所显示的CT图像平面与荧光透视图像上的光标的位置而改变 。

公开(公告)号：EP0486591A1

公开(公告)日：1992-05-27

申请号：EP90912728.0

申请日：1990-08-03

申请人： W.L. SYSTEMS, INC.

发明人： WAGGENER, Robert, G. ,  LANGE, Jory, D.

IPC分类号： A61B6 ,  G06T1 ,  G06T11

CPC分类号： G06T11/006 ,  A61B6/584 ,  G06T2211/421

摘要： Appareil et procédé de montage d'un simulateur de rayons X existants et de calcul d'une image tomographique calculée rétroprojetée. Le réseau de détecteur (26) est linéaire et sort des signaux provenant des photodiodes montées dans le réseau, lesquels signaux sont envoyés à un préprocesseur (32) à des fins de lissage, correction et filtrage et traitement ultérieur pour transformer le signal de celui produit par rayon X provenant d'une source de rayons en éventail (12), par exemple dans un système de coordonnées polaires, en un signal qui aurait été produit par un détecteur dans le réseau de détecteur et sur lequel un faisceau parallèle est incident sur un système de coordonnées cartésien. Les données transformées sont converties en une valeur d'échelle des gris pour un élément d'image ayant une position spécifique dans le système de coordonnées cartésien et sont affichées de manière appropriée. Les données sont prises à chaque angle incrémentiel au fur et à mesure que la source de rayons (12) et le réseau de détecteurs (26) tournent autour d'un objet cible (18). Le procédé de reconstruction de cette image rétroprojetée implique la correction et le lissage des signaux de sortie, la mise à l'échelle de ces signaux corrigés et lissés, et le convolutionnement des signaux mis à l'échelle en données caractérisant le rayon qui est incident sur chaque élément détecteur individuel en données d'intensité équivalente si le rayon incident avait eu son origine d'une source de rayon parallèle. L'invention concerne également des procédés de correction des données pour des lectures incorrectes de détecteur et pour le déplacement du réseau de détecteur (26) en conséquence à la rotation décentrée de la source de rayons X (12) ou du réseau de détecteurs (26) ou des deux.

公开(公告)号：EP3391821B1

公开(公告)日：2024-05-08

申请号：EP18000380.8

申请日：2018-04-18

IPC分类号： A61B6/00 ,  G01N23/20

CPC分类号： A61B6/4035 ,  A61B6/4291 ,  A61B6/484 ,  A61B6/5211 ,  A61B6/5264 ,  A61B6/547 ,  A61B6/584 ,  G01N23/20075 ,  G01N23/041 ,  G16H50/20

公开(公告)号：EP3367086A1

公开(公告)日：2018-08-29

申请号：EP16857598.3

申请日：2016-10-24

申请人： Job Corporation

发明人： YAMAKAWA, Tsutomu ,  YAMAMOTO, Shuichiro ,  OKADA, Masahiro

IPC分类号： G01N23/04 ,  A61B6/00 ,  G01N23/18

CPC分类号： A61B6/584 ,  A61B6/00 ,  G01N23/04 ,  G01N23/083 ,  G01N23/18

摘要： From counts detected by a photon counting detector, influence of X-ray attenuation caused by physical phenomena such as beam hardening is removed or reduced in each energy bin. Based on counts detected by a photon counting detector (24), a characteristic of X-ray attenuation amounts µt is acquired for each of X-ray energy bins. This characteristic is defined by a plurality of mutually different known thicknesses t and linear attenuation coefficients µ provided in the X-ray transmission direction through a substance. This substance is composed of a material which is included in an object being imaged and which is the same in type as the object (the same type of substance) or which can be regarded as being similar to the object in terms of the effective atomic number. Correcting data for replacing the characteristic of the X-ray attenuation amounts µt by a linear target characteristic are calculated. The linear target characteristic is set to pass through the origin of a two-dimensional coordinate system having a lateral axis assigned to thicknesses t and a longitudinal axis assigned to the X-ray attenuation amounts µt. The correcting data are calculated for each of the X-ray energy bins.

公开(公告)号：EP3253293A2

公开(公告)日：2017-12-13

申请号：EP16706144.9

申请日：2016-02-04

申请人： Sirona Dental, Inc. ,  Sirona Dental Systems GmbH

发明人： DUEWER, Fred

IPC分类号： A61B6/02 ,  A61B6/14 ,  A61B6/00

CPC分类号： A61B6/5258 ,  A61B6/025 ,  A61B6/027 ,  A61B6/14 ,  A61B6/145 ,  A61B6/5252 ,  A61B6/584 ,  A61B90/39 ,  A61B2090/3966 ,  G06T5/005 ,  G06T5/50 ,  G06T7/337 ,  G06T11/008 ,  G06T2207/10116 ,  G06T2207/30036 ,  G06T2207/30204

摘要： Method, system, apparatus, and computer program products for removing marker artifacts from a tomosynthesis dataset. In the method, a first plurality of projection images are acquired by tomosynthesis x-ray imaging, the first plurality of projection images containing at least one imaged representation of at least one alignment marker. In one aspect, the imaged representation of the at least one alignment marker on the first plurality of projection images is minimized to generate a second plurality of projection images. In another aspect, a plurality of tomographic images are reconstructed from the second plurality of projection images.