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Multi-energy CT image restoration algorithm based on the flat-panel X-ray source

Published: 27 August 2021 Publication History

Abstract

X-ray has been widely used in medical diagnosis and other fields with the non-destructive merit. Recently, the cold cathode X-ray source based on field emission, which are different from traditional hot cathode X-ray source, have overcome the limitations of traditional X-ray source due to their small size, addressable, and integrated characteristics, making CT imaging methods can be further developed. Especially X-ray sources using ZnO nanowires as cold cathodes can densely integrate a large number of X-ray sources into flat panel devices. When we use this flat X-ray source to light up multiple sources to scan an object at the same time, small source spacing will cause inevitable projection aliasing. Therefore, we propose an image restoration algorithm for projection aliasing, and use the method of projection rearrangement to remove projection aliasing. In addition, we estimated the spectrum of the flat-panel X-ray source by solving the spectral model parameters from the attenuation data of materials of different thicknesses, and used the spectral information to simulate the effect of the proposed image restoration method on the new photon counting detector. The results of simulation experiments show the effectiveness of this method and the potential of this new imaging mode.

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Cited By

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  • (2024)Fabrication of ZnO Nanowire Cold Cathode Flat-Panel X-ray Source with a Reflective AnodeNanomaterials10.3390/nano1418150414:18(1504)Online publication date: 16-Sep-2024
  • (2024)Cold Cathode Flat Panel X-ray Source for Talbot–Lau Grating Interferometer using Zinc Oxide Nanowire Field Emitter Arrays and Periodic Microstructured AnodeACS Applied Nano Materials10.1021/acsanm.4c044107:22(25439-25446)Online publication date: 12-Nov-2024
  • (2023)Transparent Flat Panel X-Ray Source Using ITO Transmission Anode and ZnO Nanowire Cold CathodeIEEE Transactions on Electron Devices10.1109/TED.2023.326775770:6(3302-3307)Online publication date: Jun-2023
  • Show More Cited By

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cover image ACM Other conferences
ISICDM 2020: The Fourth International Symposium on Image Computing and Digital Medicine
December 2020
239 pages
ISBN:9781450389686
DOI:10.1145/3451421
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 27 August 2021

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Author Tags

  1. energy spectrum imaging
  2. flat-panel source
  3. image restoration
  4. projection aliasing

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Cited By

View all
  • (2024)Fabrication of ZnO Nanowire Cold Cathode Flat-Panel X-ray Source with a Reflective AnodeNanomaterials10.3390/nano1418150414:18(1504)Online publication date: 16-Sep-2024
  • (2024)Cold Cathode Flat Panel X-ray Source for Talbot–Lau Grating Interferometer using Zinc Oxide Nanowire Field Emitter Arrays and Periodic Microstructured AnodeACS Applied Nano Materials10.1021/acsanm.4c044107:22(25439-25446)Online publication date: 12-Nov-2024
  • (2023)Transparent Flat Panel X-Ray Source Using ITO Transmission Anode and ZnO Nanowire Cold CathodeIEEE Transactions on Electron Devices10.1109/TED.2023.326775770:6(3302-3307)Online publication date: Jun-2023
  • (2023)Modeling the Temporal Response of Gated ZNO Nanowire Field Emitter Arrays2023 IEEE 36th International Vacuum Nanoelectronics Conference (IVNC)10.1109/IVNC57695.2023.10188983(69-71)Online publication date: 10-Jul-2023
  • (2021)Fully Vacuum-Sealed Diode-Structure Addressable ZnO Nanowire Cold Cathode Flat-Panel X-ray Source: Fabrication and Imaging ApplicationNanomaterials10.3390/nano1111311511:11(3115)Online publication date: 18-Nov-2021

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