NDLI: Multi-head gamma camera system with CdZnTe semiconductor detectors

Content Provider	IEEE Xplore Digital Library
Author	Ogawa, K. Ichimura, Y. Donai, T. Umeda, I.O. Fujii, H.
Copyright Year	2013
Description	Author affiliation: Functional Imaging Div., National Cancer Center Hosp. East, Kashiwa, Japan (Umeda, I.O.; Fujii, H.) \|\| Grad. Sch. of Eng., Hosei Univ., Tokyo, Japan (Ogawa, K.; Ichimura, Y.; Donai, T.)
Abstract	The purpose of our research is to develop a new brain single photon emission CT (SPECT) system with a semiconductor detector. For the detector we adopted CdZnTe semiconductor modular detectors to improve the energy resolution and spatial resolution. The size of a module was 39 × 39 $mm^{2}$ (16 × 16 pixels) and the thickness of the CdZnTe crystal was 5 mm. With this modular detector we made three detector units each consisting of ten CdZnTe modules. In each detector unit we set 5 × 2 (=10) detector modules, and thus the maximum active field became 195 × 78 $mm^{2}.$ And to increase the sensitivity we used a multi-pinhole collimator with a hole size of 2 mmφ and the thickness of 1 cm. These pinholes were located on the surface of the hexagonal gantry around the object to be reconstructed. In this paper we evaluated the performance of our proposed system with several phantoms (a cold channel phantom, hot rod phantom and brain phantom). The results obtained with the experiments confirmed the validity of the proposed brain SPECT system.
Starting Page	1
Ending Page	3
File Size	386180
Page Count	3
File Format	PDF
e-ISBN	9781479905348
DOI	10.1109/NSSMIC.2013.6829082
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-27
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phantoms Image reconstruction Single photon emission computed tomography Collimators Semiconductor detectors Imaging phantoms
Content Type	Text
Resource Type	Article

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