Improvement of image quality in transmission computed tomography using synchrotron monochromatic x-ray sheet beam

Author

Yuasa, T. ; Takeda, T. ; Zeniya, T. ; Hasegawa, Y. ; Hyodo, K. ; Hiranaka, Y. ; Itai, Y. ; Akatsuka, T.

Author_Institution

Fac. of Eng., Yamagata Univ., Yonezawa, Japan

Volume

3

fYear

2001

fDate

2001

Firstpage

2367

Abstract

In the transmission CT imaging system with a scintillator-CCD detector using synchrotron monochromatic x-ray as sheet beam, improvement of the reconstructed image quality is investigated. The properties of the experimental facilities cause the incident beam intensity to be spatially inhomogeneous, and to temporally attenuate. In order to achieve more reliable reconstruction, we propose the data-correction and estimation method based on the properties of the facilities and the principle of CT reconstruction, and confirm its effectiveness using a physical phantom.

Keywords

CCD image sensors; X-ray detection; computerised tomography; image reconstruction; medical image processing; phantoms; synchrotron radiation; data-correction; estimation method; experimental facilities; image quality; physical phantom; reconstructed image quality; scintillator-CCD detector; spatially inhomogeneous incident beam intensity; synchrotron monochromatic X-ray sheet beam; synchrotron monochromatic x-ray sheet beam; transmission CT imaging system; transmission computed tomography; Biomedical imaging; Charge coupled devices; Computed tomography; Image quality; Optical imaging; Pixel; Synchrotrons; X-ray detection; X-ray detectors; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1017253

Filename

1017253