Application of Tikhonov and MTSVD methods to unfold experimental X-ray spectra in the radiodiagnostic energy range

Author

Querol, A. ; Gallardo, S. ; Ródenas, J. ; Verdú, G.

Author_Institution

Chem. & Nucl. Eng. Dept., Polytech. Univ. of Valencia, Valencia, Spain

fYear

2010

fDate

Aug. 31 2010-Sept. 4 2010

Firstpage

536

Lastpage

539

Abstract

A thorough knowledge of the primary spectrum is very important for Quality Control (QC) of X-ray tubes. A methodology to assess primary spectrum using a Compton spectrometer has been simulated with the MCNP5 code based on the Monte Carlo (MC) method. The Pulse Height Distribution (PHD) recorded in the detector is related with the primary X-ray spectrum by means of a Response matrix. Tikhonov and Modified Truncated Singular Values Decomposition (MTSVD) unfolding methods have been applied to the Response matrix to assess the primary spectrum. Both methods are tested comparing unfolded results with theoretical spectra from IPEM-78 catalogue.

Keywords

Monte Carlo methods; X-ray detection; X-ray spectra; X-ray tubes; biomedical equipment; diagnostic radiography; singular value decomposition; Monte Carlo method; Tikhonov unfolding method; X-ray spectra; X-ray tubes; modified truncated singular value decomposition unfolding method; primary X-ray spectrum; pulse height distribution; quality control; radiodiagnostic energy range; Anodes; Detectors; Electron tubes; Monte Carlo methods; Photonics; Scattering; Spectroscopy; Computer Simulation; Models, Theoretical; Monte Carlo Method; Quality Control; Radiography; Scattering, Radiation; X-Rays;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE

Conference_Location

Buenos Aires

ISSN

1557-170X

Print_ISBN

978-1-4244-4123-5

Type

conf

DOI

10.1109/IEMBS.2010.5626024

Filename

5626024