公开(公告)号：US20160302756A1

公开(公告)日：2016-10-20

申请号：US15197527

申请日：2016-06-29

Applicant: General Electric Company

Inventor： Jiahua Fan ,  Meghan Lynn Yue ,  Jiang Hsieh ,  Roman Melnyk ,  Masatake Nukui ,  Yujiro Yazaki

IPC: A61B6/00 ,  G06T11/00 ,  A61B6/03 ,  G06T5/00

CPC classification number: A61B6/5258 ,  A61B6/03 ,  A61B6/032 ,  A61B6/482 ,  A61B6/5205 ,  A61B6/582 ,  G01N2223/401 ,  G01N2223/419 ,  G06T5/002 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/20182

Abstract: An imaging system includes a computer programmed to estimate noise in computed tomography (CT) imaging data, correlate the noise estimation with neighboring CT imaging data to generate a weighting estimation based on the correlation, de-noise the CT imaging data based on the noise estimation and on the weighting, and reconstruct an image using the de-noised CT imaging data.

公开(公告)号：US10595808B2

公开(公告)日：2020-03-24

申请号：US15197527

申请日：2016-06-29

Applicant: General Electric Company

Inventor： Jiahua Fan ,  Meghan Lynn Yue ,  Jiang Hsieh ,  Roman Melnyk ,  Masatake Nukui ,  Yujiro Yazaki

IPC: G06K9/00 ,  A61B6/00 ,  G06T5/00 ,  A61B6/03 ,  G06T11/00

Abstract: An imaging system includes a computer programmed to estimate noise in computed tomography (CT) imaging data, correlate the noise estimation with neighboring CT imaging data to generate a weighting estimation based on the correlation, de-noise the CT imaging data based on the noise estimation and on the weighting, and reconstruct an image using the de-noised CT imaging data.

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

IPC: A61B6/00 ,  G06T11/00 ,  A61B6/03

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.

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

IPC: A61B6/00 ,  A61B6/03 ,  G06T11/00

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.