Evaluation of Cadmium-Zinc-Telluride Detector-based Single-Photon Emission Computed Tomography for Nuclear Cardiology: a Comparison with Conventional Anger Single-Photon Emission Computed Tomography
10.1007/s13139-017-0474-9
- Author:
Takanaga NIIMI
1
;
Mamoru NANASATO
;
Mitsuo SUGIMOTO
;
Hisatoshi MAEDA
Author Information
1. Department of Radiological Technology, Nagoya Daini Red Cross Hospital, Takanaga Niimi, 2-9 Myouken-cho, Showa-ku, Nagoya 466-8650, Japan. nim@nagoya2.jrc.or.jp
- Publication Type:Original Article
- Keywords:
Anger SPECT;
Collimation system;
CZT camera;
D-SPECT;
Nuclear cardiology
- MeSH:
Anger;
Cardiology;
Tomography, Emission-Computed;
Tomography, Emission-Computed, Single-Photon;
Torso
- From:Nuclear Medicine and Molecular Imaging
2017;51(4):331-337
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: The differences in performance between the cadmium-zinc-telluride (CZT) camera or collimation systems and conventional Anger single-photon emission computed tomography (A-SPECT) remain insufficient from the viewpoint of the user. We evaluated the performance of the D-SPECT (Spectrum Dynamics, Israel) system to provide more information to the cardiologist or radiological technologist about its use in the clinical field.MATERIALS AND METHODS: This study evaluated the performance of the D-SPECTsystem in terms of energy resolution, detector sensitivity, spatial resolution, modulation transfer function (MTF), and collimator resolution in comparison with that of A-SPECT (Bright-View, Philips, Japan). Energy resolution and detector sensitivity were measured for Tc-99m, I-123, and Tl-201. The SPECT images produced by both systems were evaluated visually using the anthropomorphic torso phantom.RESULTS: The energy resolution of D-SPECT with Tc-99m and I-123 was approximately two times higher than that of ASPECT. The detector sensitivity of D-SPECT was higher than that of A-SPECT (Tc-99m: 4.2 times, I-123: 2.2 times, and Tl-201: 5.9 times). The mean spatial resolution of D-SPECTwas two times higher than that of A-SPECT. The MTF of D-SPECT was superior to that of the A-SPECT system for all frequencies. The collimator resolution of D-SPECT was lower than that of A-SPECT; however, the D-SPECT images clearly indicated better spatial resolution than the A-SPECT images.CONCLUSION: The energy resolution, detector sensitivity, spatial resolution, and MTF of D-SPECT were superior to those of A-SPECT. Although the collimator resolution was lower than that of A-SPECT, the D-SPECT images were clearly of better quality.
