Feasibility Study of a Lens-coupled Charge-Coupled Device Gamma Camera
- Authors
- Lee, Hakjae; Jung, Young-Jun; Kim, Jung-Min; Bae, Seungbin; Lee, Kisung; Kang, Jungwon
- Issue Date
- 12월-2011
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- CCD; Gamma camera; Optical lens
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.59, no.6, pp.3631 - 3635
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 59
- Number
- 6
- Start Page
- 3631
- End Page
- 3635
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111010
- DOI
- 10.3938/jkps.59.3631
- ISSN
- 0374-4884
- Abstract
- A charge-coupled device (CCD) is generally used in a digital camera as a light-collecting device such as a photomultiplier tube (PMT). Because of its low sensitivity and very high dark current, CCD have not been popularly used for gamma imaging systems. However, a recent CCD technological breakthrough has improved CCD sensitivity, and the use of a Peltier cooling system can significantly minimize the dark current. In this study, we investigated the feasibility of a prototype CCD gamma camera consisting of a CsI scintillator, optical lenses, and a CCD module. Despite electron-multiplying (EM) CCDs having higher performance, in this study, we built a cost-effective system consisted of low-cost components compared to EMCCDs. Our prototype detector consists of a CsI scintillator, two optical lenses, and a conventional Peltier-cooled CCD. The performance of this detector was evaluated by acquiring the sensitivity, resolution, and the modulation transfer function (MTF). The sensitivity of the prototype detector showed excellent linearity. With a 1 mm-diameter pinhole collimator, the full width at half-maximum (FWHM) of a 1.1 mm Tc-99m line source image was 2.85 mm. These results show that the developed prototype camera is feasible for small animal gamma imaging.
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Collections - College of Health Sciences > School of Health and Environmental Science > 1. Journal Articles
- Graduate School > Department of Bioengineering > 1. Journal Articles
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