Feasibility study of a lens-coupled charge-coupled device gamma camera

Hakjae Lee, Young Jun Jung, Jung Min Kim, Seungbin Bae, Kisung Lee, Jungwon Kang

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)3631-3635
Number of pages5
JournalJournal of the Korean Physical Society
Volume59
Issue number61
DOIs
Publication statusPublished - 2011 Dec 15

Fingerprint

charge coupled devices
cameras
lenses
prototypes
sensitivity
dark current
scintillation counters
detectors
digital cameras
cooling systems
modulation transfer function
photomultiplier tubes
pinholes
collimators
linearity
animals
modules
costs
electrons

Keywords

  • CCD
  • Gamma camera
  • Optical lens

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Feasibility study of a lens-coupled charge-coupled device gamma camera. / Lee, Hakjae; Jung, Young Jun; Kim, Jung Min; Bae, Seungbin; Lee, Kisung; Kang, Jungwon.

In: Journal of the Korean Physical Society, Vol. 59, No. 61, 15.12.2011, p. 3631-3635.

Research output: Contribution to journalArticle

Lee, Hakjae ; Jung, Young Jun ; Kim, Jung Min ; Bae, Seungbin ; Lee, Kisung ; Kang, Jungwon. / Feasibility study of a lens-coupled charge-coupled device gamma camera. In: Journal of the Korean Physical Society. 2011 ; Vol. 59, No. 61. pp. 3631-3635.
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