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公开(公告)号：US09931095B2
公开(公告)日：2018-04-03
申请号：US15085577
申请日：2016-03-30
Applicant: General Electric Company
Inventor： Jed Douglas Pack , Brian Edward Nett , Sathish Ramani
CPC classification number: A61B6/5264 , A61B6/032 , G06T3/0093 , G06T5/002 , G06T5/20 , G06T7/0012 , G06T7/0081 , G06T7/11 , G06T7/2033 , G06T7/246 , G06T7/33 , G06T11/005 , G06T2207/10081
Abstract: According to some embodiments, system and methods are provided comprising determining one or more image locations at which motion occurred within an image volume of an object containing movable anatomical features prior to segmenting the movable anatomical features; estimating motion at each of the one or more image locations; correcting one or more motion artifacts in the image volume at each of the one or more image locations, where motion was estimated resulting in the generation of a final motion compensated image; and segmenting one or more features of interest in the final motion compensated image. Numerous other aspects are provided.
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公开(公告)号：US20180049714A1
公开(公告)日：2018-02-22
申请号：US15240077
申请日：2016-08-18
Applicant: General Electric Company
Inventor： Brian Edward Nett
CPC classification number: A61B6/542 , A61B6/027 , A61B6/032 , A61B6/0407 , A61B6/0457 , A61B6/461 , A61B6/488 , A61B6/544
Abstract: Methods and systems are provided for automatic exposure control in a computed tomography imaging system. In one embodiment, a method comprises estimating attenuation properties of a subject along a direction, and varying, based on the attenuation properties, a helical pitch along the direction during a scan of the subject. In this way, a desired image quality can be maintained while reducing radiation dose, without modulating tube current.
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公开(公告)号：US09858688B2
公开(公告)日：2018-01-02
申请号：US14755870
申请日：2015-06-30
Applicant: General Electric Company
Inventor： Brian Edward Nett , Caroline Elise Seng
CPC classification number: G06T11/005 , A61B6/032 , A61B6/5205 , A61B6/5264 , G06T2211/412
Abstract: Methods and systems are provided for motion compensation in computed tomography imaging. In one embodiment, a method comprises reconstructing at least two images from projection data, calculating a motion metric based on the at least two images, selecting a view-weighting function based on the motion metric, and generating a display from the projection data based on the selected view-weighting function. In this way, an image can be reconstructed with the selected view-weighting function which down-weights slices in the image containing motion artifacts. As a result, the image quality of the reconstructed image may be improved with computational efficiency.
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4.发明申请公开(公告)号：US20160110892A1
公开(公告)日：2016-04-21
申请号：US14520190
申请日：2014-10-21
Applicant: General Electric Company
Inventor： Brian Edward Nett , Chuang Miao
CPC classification number: G06T7/12 , A61B6/481 , A61B6/52 , A61B6/5258 , A61B34/10 , A61B90/37 , A61B2090/374 , A61B2090/3764 , A61B2090/378 , A61B2576/00 , G06T5/008 , G06T7/11 , G06T2207/10081
Abstract: Various methods and systems are provided for correcting contrast banding artifacts across multiple acquisitions in reconstructed images. In one embodiment, a method for computed tomography imaging comprises generating an original image comprising multiple subvolumes, segmenting the original image into different structures for each subvolume, selectively applying a mask-based correction through each area of subvolume that includes continuous structures to generate an updated image, and performing streak correction between the original image and the updated image to generate a final image. In this way, image quality may be improved without adjusting anatomical structures in an image.
Abstract translation: 提供了各种方法和系统，用于在重建图像中的多次采集中校正对比度条带伪影。 在一个实施例中，一种用于计算机断层摄影成像的方法包括：生成包括多个子体积的原始图像，将原始图像分割成每个子体积的不同结构，通过包括连续结构的子体积的每个区域选择性地应用基于掩码的校正，以生成更新的 图像和在原始图像和更新图像之间执行条纹校正以生成最终图像。 以这种方式，可以在不调整图像中的解剖结构的情况下改善图像质量。
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公开(公告)号：US10561391B2
公开(公告)日：2020-02-18
申请号：US15240077
申请日：2016-08-18
Applicant: General Electric Company
Inventor： Brian Edward Nett
Abstract: Methods and systems are provided for automatic exposure control in a computed tomography imaging system. In one embodiment, a method comprises estimating attenuation properties of a subject along a direction, and varying, based on the attenuation properties, a helical pitch along the direction during a scan of the subject. In this way, a desired image quality can be maintained while reducing radiation dose, without modulating tube current.
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Patent Agency Ranking
公开(公告)号：US10383589B2
公开(公告)日：2019-08-20
申请号：US15829554
申请日：2017-12-01
Applicant: General Electric Company
Inventor： Jiang Hsieh , Zhoubo Li , Brian Edward Nett , Meghan Lynn Yue , Roy A. Nilsen
Abstract: Methods and systems are provided for direct monochromatic image generation for spectral computed tomography. In one embodiment, a method comprises acquiring projection data during a scan of a subject, reconstructing a low energy image and a high energy image from the projection data, and generating a monochromatic image from the low energy image and the high energy image. In this way, a monochromatic image may be generated directly from low and high energy images with a substantial reduction in image noise, especially when compared to a monochromatic image generated indirectly from material density images.
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7.发明授权公开(公告)号：US10335096B2
公开(公告)日：2019-07-02
申请号：US15446611
申请日：2017-03-01
Applicant: General Electric Company
Inventor： Brian Edward Nett , Brandon Allan Smith
Abstract: A method is provided. The method includes partially supporting a subject to be imaged on a board extending from a mobile patient transport into a gantry bore of a stationary computed tomography (CT) imaging system while partially supporting both the subject and the board with a cradle extending from a table. The method also includes acquiring a single imaging volume, during an imaging scan with the stationary CT imaging system, without moving the subject.
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公开(公告)号：US20190167218A1
公开(公告)日：2019-06-06
申请号：US15829554
申请日：2017-12-01
Applicant: General Electric Company
Inventor： Jiang Hsieh , Zhoubo Li , Brian Edward Nett , Meghan Lynn Yue , Roy A. Nilsen
CPC classification number: A61B6/482 , A61B6/032 , A61B6/4014 , A61B6/405 , A61B6/4241 , A61B6/5205 , A61B6/5241 , G06T11/008
Abstract: Methods and systems are provided for direct monochromatic image generation for spectral computed tomography. In one embodiment, a method comprises acquiring projection data during a scan of a subject, reconstructing a low energy image and a high energy image from the projection data, and generating a monochromatic image from the low energy image and the high energy image. In this way, a monochromatic image may be generated directly from low and high energy images with a substantial reduction in image noise, especially when compared to a monochromatic image generated indirectly from material density images.
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公开(公告)号：US09836862B2
公开(公告)日：2017-12-05
申请号：US14586663
申请日：2014-12-30
Applicant: General Electric Company
Inventor： Brian Edward Nett , Hewei Gao , Paavana Sainath
CPC classification number: G06T11/008 , A61B6/481 , A61B6/482 , A61B6/5205 , A61B6/5211 , A61B6/5217 , A61B6/5258 , A61B6/585 , G06T11/006 , G06T2211/421 , G06T2211/424
Abstract: Methods and systems are provided for boosting the contrast levels in an image reconstructed from projection data acquired at a single energy. In one embodiment, a method comprises modifying projection data corresponding to a material based on an absorption behavior of the material at a selected energy, wherein the projection data is acquired at an energy higher than the selected energy. In this way, contrast levels may be enhanced in an image reconstructed from projection data acquired at a typical single energy as though the image were reconstructed from projection data acquired at a lower energy.
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公开(公告)号：US20170004636A1
公开(公告)日：2017-01-05
申请号：US14755870
申请日：2015-06-30
Applicant: General Electric Company
Inventor： Brian Edward Nett , Caroline Elise Seng
CPC classification number: G06T11/005 , A61B6/032 , A61B6/5205 , A61B6/5264 , G06T2211/412
Abstract: Methods and systems are provided for motion compensation in computed tomography imaging. In one embodiment, a method comprises reconstructing at least two images from projection data, calculating a motion metric based on the at least two images, selecting a view-weighting function based on the motion metric, and generating a display from the projection data based on the selected view-weighting function. In this way, an image can be reconstructed with the selected view-weighting function which down-weights slices in the image containing motion artifacts. As a result, the image quality of the reconstructed image may be improved with computational efficiency.
Abstract translation: 为计算机断层成像中的运动补偿提供了方法和系统。 在一个实施例中，一种方法包括从投影数据重建至少两个图像，基于至少两个图像计算运动度量，基于运动度量选择视图加权函数，以及基于投影数据生成基于 所选择的视图加权函数。 以这种方式，可以使用所选择的视图加权函数来重建图像，该功能降低包含运动伪像的图像中的切片。 结果，可以以计算效率提高重构图像的图像质量。
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