Title :
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
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;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1017253
