公开(公告)号：US20170172528A1

公开(公告)日：2017-06-22

申请号：US14977086

申请日：2015-12-21

Applicant: General Electric Company

Inventor： Uwe Wiedmann ,  Peter Michael Edic ,  Bruno Kristiaan Bernard De Man ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Yannan Jin ,  Denis Perrillat-Amede ,  Jean- Francois Larroux

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/482 ,  A61B6/032 ,  A61B6/405 ,  A61B6/5205 ,  A61B6/5258

Abstract: Acquisition of X-ray transmission data at three or more energy levels is described. Various implementations utilize generator waveforms that utilize fast-switching, slow-switching, or a combination of fast- and slow-switching to transition between X-ray energy levels. In addition, various sampling arrangements for sampling and/or binning three or more energy levels of X-ray transmission data are discussed. The use of these data in subsequent processing steps, such for material decomposition and/or improvement of dual-energy material decomposition processing, are also described.

公开(公告)号：US09655580B2

公开(公告)日：2017-05-23

申请号：US14920991

申请日：2015-10-23

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yannan Jin ,  Bruno Kristiaan Bernard De Man ,  Ge Wang ,  Yan Xi

IPC: G06K9/00 ,  A61B6/00 ,  A61B6/03 ,  G06T5/00 ,  G06T5/50 ,  G06T11/00

CPC classification number: A61B6/5258 ,  A61B6/03 ,  A61B6/482 ,  A61B6/5205 ,  G06T5/005 ,  G06T5/50 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/10144 ,  G06T2207/20221 ,  G06T2207/30004 ,  G06T2211/408

Abstract: A method includes receiving, with at least one processor, a first projection dataset corresponding to X-rays at a first energy level projected towards a subject at a first set of view angles and receiving, with the at least one processor, a second projection dataset corresponding to X-rays at a second energy level projected towards the subject at a second set of view angles. The method further includes identifying, with the at least one processor, a metal trace from at least one of the first projection dataset and the second projection dataset. Moreover, the method includes converting, with the at least one processor, at least a portion of the first projection dataset to a pseudo dataset at the second energy level. The method also includes generating, with the at least one processor, a final image of the subject based on the second projection dataset, the pseudo dataset, and the metal trace.