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 / 대한핵의학회잡지
Korean Journal of Nuclear Medicine
;
: 331-337, 2017.
Artigo
em Inglês
| WPRIM
| ID: wpr-786952
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 ANDMETHODS:
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.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Cardiologia
/
Tomografia Computadorizada de Emissão
/
Tomografia Computadorizada de Emissão de Fóton Único
/
Tronco
/
Ira
Idioma:
Inglês
Revista:
Korean Journal of Nuclear Medicine
Ano de publicação:
2017
Tipo de documento:
Artigo
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