Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)
- Volume 29 Issue 4
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- Pages.237-240
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- 2006
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- 2288-3509(pISSN)
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- 2384-1168(eISSN)
The Noise Evaluation for Ragius 150 CR System
Regius 150 Computed Radiography 시스템의 Noise 평가에 관한 연구
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Kim, Jung-Min
(Health Science Korea university) ;
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Min, Jung-Whan
(Paik Hospital Inje University) ;
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Jeong, Hea-Won
(Health Science Korea university) ;
- Im, Eun-Kyung (Korea Institute Radiological & Medical Sciences) ;
- Yang, Han-Joon (Seoul Health College)
- Published : 2006.12.30
Abstract
The Noise of CR Systems is made up of X-ray quantum mottle and additional Imaging plate's structure noise, photon noise of lumine cence, noise of electrometer, quantization noise etc. In this Regius 150 system, SNR was increased from 8.2 to 30 with linearily according to radiation dose from 0.1 mR to 100 mR. It means that the Regius 150 system has enough trustability because of SNR is over 5 by Rose Model. NPS was calculated two dementional Fourier Transform with shake of pixel value in the white Image. In the spatial frequence range of
CR 시스템의 잡음(Noise)의 주요한 원인은 X-선 양자 모틀이며 그 외에 Imaging plate의 구조 노이즈, 휘진발광체의 광양자 노이즈, 전기계의 노이즈, 양자화 노이즈 등이 있다. Regius 150시스템에서 선량이