发明申请
US20160262709A1 DUAL-ENERGY CONE-BEAM COMPUTED TOMOGRAPHY WITH A MULTIPLE SOURCE, SINGLE-DETECTOR CONFIGURATION
审中-公开
具有多个源的双能量电脑计算机测图,单次检测器配置
- 专利标题: DUAL-ENERGY CONE-BEAM COMPUTED TOMOGRAPHY WITH A MULTIPLE SOURCE, SINGLE-DETECTOR CONFIGURATION
- 专利标题(中): 具有多个源的双能量电脑计算机测图,单次检测器配置
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申请号: US15030818申请日: 2014-11-25
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公开(公告)号: US20160262709A1公开(公告)日: 2016-09-15
- 发明人: Jeffrey H. Siewerdsen , J. Webster Stayman , Wojciech Zbijewski , John Yorkston
- 申请人: THE JOHNS HOPKINS UNIVERSITY , CARESTREAM HEALTH, INC.
- 申请人地址: US MD Baltimore US NY Rochester
- 专利权人: The Johns Hopkins University,Carestream Health, Inc.
- 当前专利权人: The Johns Hopkins University,Carestream Health, Inc.
- 当前专利权人地址: US MD Baltimore US NY Rochester
- 国际申请: PCT/US14/67208 WO 20141125
- 主分类号: A61B6/00
- IPC分类号: A61B6/00 ; A61B6/03
摘要:
The present invention is directed to a system and method for dual-energy (DE) or multiple-energy (spectral) cone-beam computed tomography (CBCT) using a configuration of multiple x-ray sources and a single detector. The x-ray sources are operated to produce x-ray spectra of different energies (peak kilovoltage (kVp) and/or filtration). Volumetric 3D image reconstruction and dual or triple energy 3D image decomposition can be executed using data from the CBCT scan. The invention allows for a variety of selections in energy and filtration associated with each source and the order of pulsing for each source (“firing pattern”). The motivation for distributing the sources along the z direction in CBCT includes extension of the longitudinal field of view and reduction of cone-beam artifacts.
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