-
公开(公告)号：US20160100814A1
公开(公告)日：2016-04-14
申请号：US14513464
申请日：2014-10-14
Applicant: Carestream Health, Inc.
Inventor： Jay S. Schildkraut , Edward B. Gindele , Lawrence A. Ray
CPC classification number: A61B6/5235 , A61B6/032 , A61B6/4085 , A61B6/5205 , A61B6/5258 , A61B6/5264 , A61B6/527 , A61B6/5282 , G06T7/0012 , G06T11/003 , G06T11/006 , G06T15/08 , G06T2207/10081 , G06T2207/10116 , G06T2207/30004 , G06T2211/40 , G06T2211/408 , G06T2211/432
Abstract: A method for generating a 3-dimensional reconstruction model of an object of interest that lies within a volume, the method executed at least in part by a computer, acquires a first set of projection images of the volume at a first exposure and a first field of view and a second set of projection images of the object of interest within the volume at a second exposure that is higher than the first exposure and a second field of view that is narrower than the first field of view. An object of interest is reconstructed from the second set of projection images according to information related to portions of the volume that lie outside the object of interest. The reconstructed object of interest is displayed.
Abstract translation: 一种用于生成位于体积内的感兴趣对象的3维重建模型的方法，所述方法至少部分地由计算机执行，在第一曝光和第一场获取第一组投影图像 以及在比第一曝光高的第二曝光的体积内的感兴趣对象的第二组投影图像和比第一视场窄的第二视场。 根据与感兴趣对象之外的卷的部分相关的信息，从第二组投影图像重建感兴趣的对象。 显示重建的感兴趣对象。
-
公开(公告)号：US20160078647A1
公开(公告)日：2016-03-17
申请号：US14483266
申请日：2014-09-11
Applicant: Carestream Health, Inc.
Inventor： Jay S. Schildkraut , Lawrence A. Ray , Krishnamoorthy Subramanyan
IPC: G06T11/00
CPC classification number: G06T11/005
Abstract: A method for reducing metal artifacts in a volume radiographic image reconstructs a first 3-D-image using measured projection images and forms a 3-D image metal mask that contains metal voxels. For each measured projection image, a projection metal mask is a projection of the 3-D image metal mask. A 3-D prior image contains voxels within the 3-D image metal mask. Voxel values of the first 3-D image outside the 3-D image metal mask are replaced with a value representative of air or soft tissue. Non-metal voxels of the 3-D prior image are modified according to a difference between a pixel value related to the nonmetal voxel and the corresponding pixel value in a calculated projection image. Composite projection images are formed by replacing measured projection image data for pixels within the projection metal mask with calculated projection image data. A metal artifact reduced 3-D image is reconstructed from composite projections.
Abstract translation: 用于减小体积放射线照相图像中的金属伪影的方法使用测量的投影图像重建第一3D图像并形成包含金属体素的3-D图像金属掩模。 对于每个测量的投影图像，投影金属掩模是3-D图像金属掩模的投影。 3-D现有图像包含3-D图像金属掩模内的体素。 3-D图像金属掩模外部的第一个3-D图像的体素值被替换为代表空气或软组织的值。 根据与非金属体素相关的像素值与计算的投影图像中的对应像素值之间的差异，修改3D图像的非金属体素。 通过用计算出的投影图像数据代替投影金属掩模内的像素的测量投影图像数据来形成复合投影图像。 从复合投影重建金属伪影减少的3-D图像。
-
公开(公告)号：US20150178917A1
公开(公告)日：2015-06-25
申请号：US14576264
申请日：2014-12-19
Applicant: CARESTREAM HEALTH, INC.
Inventor： Dong Yang , Lawrence A. Ray , Andre Souza , Alexandre X. Falcao
CPC classification number: G06T17/00 , A61B6/032 , A61B6/4085 , A61B6/5258 , G06T5/005 , G06T11/005 , G06T2207/10081 , G06T2207/30052
Abstract: Method and/or apparatus embodiments can process volume image data of a subject. An exemplary method includes obtaining a first group of two-dimensional radiographic images of the subject, wherein each of the images is obtained with a detector and a radiation source at a different scan angle. The method arranges image data from the first group of images in an image stack so that corresponding pixel data from the detector is in register for each of the images in the image stack. Pixels that represent metal objects are segmented from the image stack and data replaced for at least some of the segmented pixels to generate a second group of modified two-dimensional radiographic images. The second group of images is combined with the first group to generate a three-dimensional volume image according to the combined images and an image slice from the three-dimensional volume image is displayed.
Abstract translation: 方法和/或装置实施例可以处理对象的体积图像数据。 一种示例性方法包括获得所述对象的第二组二维放射照相图像，其中每个图像是用不同扫描角的检测器和辐射源获得的。 该方法将来自图像堆叠中的第一组图像的图像数据排列成使得来自检测器的相应像素数据被记录在图像堆叠中的每个图像中。 代表金属物体的像素从图像堆栈中被分割，并为至少一些分段像素替换数据，以产生第二组修改的二维放射照相图像。 第二组图像与第一组组合以根据组合的图像生成三维体积图像，并且显示来自三维体积图像的图像切片。
-
公开(公告)号：US08768025B2
公开(公告)日：2014-07-01
申请号：US14040776
申请日：2013-09-30
Applicant: Carestream Health, Inc.
Inventor： Victor C. Wong , James R. Milch , Lawrence A. Ray , Peter D. Burns
IPC: G06K9/00
CPC classification number: A61B1/24 , A61B1/00006 , A61B1/00009 , A61B1/04 , A61B1/0638 , G01J3/46 , G01J3/462 , G01J3/465 , G01J3/50 , G01J3/501 , G01J3/508 , G01J3/524
Abstract: A method and apparatus for generating a color mapping for a dental object. The method includes generating a transformation matrix according to a set of spectral reflectance data for a statistically valid sampling of teeth. Illumination is directed toward the dental object over at least a first, a second, and a third wavelength band, one wavelength band at a time. For each of a plurality of pixels in an imaging array, an image data value is obtained, corresponding to each of the at least first, second, and third wavelength bands. The transformation matrix is applied to form the color mapping by generating a set of visual color values for each of the plurality of pixels according to the obtained image data values and according to image data values obtained from a reference object at the at least first, second, and third wavelength bands. The color mapping can be stored in an electronic memory.
Abstract translation: 一种用于产生牙科物体的颜色映射的方法和装置。 该方法包括根据用于统计学上有效的牙齿取样的一组光谱反射率数据产生变换矩阵。 通过至少第一，第二和第三波长带，一次一个波长带照射朝向牙科物体。 对于成像阵列中的多个像素中的每一个，获得对应于至少第一，第二和第三波长带中的每一个的图像数据值。 应用变换矩阵以通过根据所获得的图像数据值生成一组视觉颜色值以形成颜色映射，并且根据从至少第一，第二的参考对象获得的图像数据值 和第三波长带。 颜色映射可以存储在电子存储器中。
-
公开(公告)号：US10966670B2
公开(公告)日：2021-04-06
申请号：US15670292
申请日：2017-08-07
Applicant: Carestream Health, Inc.
Inventor： Lawrence A. Ray , Richard A. Simon , Levon O. Vogelsang
Abstract: An imaging method, accesses a set of low-energy projection images and performs a low-energy reconstruction using the low-energy projection images. A synthesized intermediate low-energy projection image is generated. A high-energy reconstruction is performed using a set of high-energy projection images. A synthesized intermediate high-energy projection image is generated. A dual-energy reconstruction is performed using at least one low-energy projection image, the synthesized intermediate low-energy projection image, at least one high-energy projection image, and the synthesized intermediate high-energy projection image.
-
Patent Agency Ranking
公开(公告)号：US10743822B2
公开(公告)日：2020-08-18
申请号：US16022864
申请日：2018-06-29
Applicant: CARESTREAM HEALTH, INC.
Inventor： Richard A. Simon , Levon O. Vogelsang , Lawrence A. Ray
Abstract: A method for geometric calibration of a radiography apparatus disposes at least one radio-opaque marker in the field of view of the radiography apparatus. A series of tomosynthesis projection images of patient anatomy is acquired from the detector with the x-ray source at different positions along a scan path. For at least three projection images showing the position of the radio-opaque marker, the spatial and angular geometry of the x-ray source and detector are calculated according to the positions of the marker. A tomosynthesis image is reconstructed according to the calculated geometry. A rendering of the reconstructed image is displayed.
-
公开(公告)号：US10395395B2
公开(公告)日：2019-08-27
申请号：US15070042
申请日：2016-03-15
Applicant: Carestream Health, Inc.
Inventor： Levon O. Vogelsang , Lawrence A. Ray , Richard A. Simon
Abstract: A method for tomosynthesis volume reconstruction acquires at least a prior projection image of the subject at a first angle and a subsequent projection image of the subject at a second angle. A synthetic image corresponding to an intermediate angle between the first and second angle is generated by a repeated process of relating an area of the synthetic image to a prior patch on the prior projection image and to a subsequent patch on the subsequent projection image according to a bidirectional spatial similarity metric, wherein the prior patch and subsequent patch have n×m pixels; and combining image data from the prior patch and the subsequent patch to form a portion of the synthetic image. The generated synthetic image is displayed, stored, processed, or transmitted.
-
公开(公告)号：US10136870B2
公开(公告)日：2018-11-27
申请号：US14979675
申请日：2015-12-28
Applicant: Carestream Health, Inc.
Inventor： Lawrence A. Ray , Edward B. Gindele
Abstract: An apparatus captures radiographic images of an animal standing proximate the apparatus. A moveable x-ray source and a digital radiographic detector are hidden from view of the animal and are revolved about a portion of the animal's body to capture one or a sequence of radiographic images of the animal's body.
-
公开(公告)号：US09855114B2
公开(公告)日：2018-01-02
申请号：US13945941
申请日：2013-07-19
Applicant: Carestream Health, Inc.
Inventor： Shoupu Chen , Jean-Marc Inglese , Lawrence A. Ray , Jacques Treil
CPC classification number: A61C7/002 , G06T7/60 , G06T7/75 , G06T2207/10081 , G06T2207/20101 , G06T2207/30016 , G06T2207/30036
Abstract: A method for 3-D cephalometric analysis acquires reconstructed volume image data from a computed tomographic scan of a patient's head. The acquired volume image data simultaneously displays from at least a first 2-D view and a second 2-D view. For an anatomical feature of the head, an operator instruction positions a reference mark corresponding to the feature on either the first or the second displayed 2-D view and the reference mark displays on each of the at least first and second displayed 2-D views. In at least the first and second displayed 2-D views, one or more connecting lines display between two or more of the positioned reference marks. One or more cephalometric parameters are derived according to the positioned reference marks, the derived parameters are displayed.
-
公开(公告)号：US20170270694A1
公开(公告)日：2017-09-21
申请号：US15070042
申请日：2016-03-15
Applicant: Carestream Health, Inc.
Inventor： Levon O. Vogelsang , Lawrence A. Ray , Richard A. Simon
CPC classification number: G06T11/008 , A61B6/025 , A61B6/027 , A61B6/5205 , A61B6/5264 , A61B6/542
Abstract: A method for tomosynthesis volume reconstruction acquires at least a prior projection image of the subject at a first angle and a subsequent projection image of the subject at a second angle. A synthetic image corresponding to an intermediate angle between the first and second angle is generated by a repeated process of relating an area of the synthetic image to a prior patch on the prior projection image and to a subsequent patch on the subsequent projection image according to a bidirectional spatial similarity metric, wherein the prior patch and subsequent patch have n×m pixels; and combining image data from the prior patch and the subsequent patch to form a portion of the synthetic image. The generated synthetic image is displayed, stored, processed, or transmitted.
-
-
-
-
-
-
-
-
-
Search Results
30
records
(took 0.018 seconds)
