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08.04.2019 | Original Article

First comparison of performances between the new whole-body cadmium–zinc–telluride SPECT-CT camera and a dedicated cardiac CZT camera for myocardial perfusion imaging: Analysis of phantom and patients

Zeitschrift:
Journal of Nuclear Cardiology
Autoren:
MD, PhD Maxime Morelle, MD Dimitri Bellevre, MD Claude Hossein-Foucher, MD, PhD Alain Manrique, MD, PhD Alban Bailliez
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s12350-019-01702-2) contains supplementary material, which is available to authorized users.
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Abstract

Background

Dedicated cardiac Cadmium–zinc–telluride (CZT) cameras show superior performances compared with Anger systems, particularly in terms of spatial resolution and count sensitivity. This study evaluated the performances of a new polyvalent whole body CZT camera (DNM 670CZT) compared with a cardiac dedicated CZT camera (DNM 530c) for myocardial perfusion SPECT.

Methods

The spatial resolution was evaluated with three linear sources filled with 99mTc. We used a cardiac phantom to evaluate count sensitivity, sharpness index, contrast-to-noise ratio, wall thickness, non-uniformity index, perfusion scores and ventricle volumes for both cameras. The impact of matrix size, and acquisition time was investigated. Concordance between the two cameras was evaluated in patients using QPS/QGS software for quantitative segmental perfusion, motion and thickness scores.

Results

The spatial resolution was identical with the two cameras. Count sensitivity of the DNM 670CZT was twofold lower compared with the DNM 530c, leading to lower sharpness index and contrast-to-noise ratio. The wall thickness and the myocardial volumes were similar. Visual and quantitative assessments of the perfusion patterns have shown a good concordance of the two cameras on phantoms and in patients.

Conclusion

This study demonstrated the feasibility of myocardial perfusion SPECT imaging using the new whole-body DNM 670CZT camera.

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Zusatzmaterial
Supplementary material 1 (PPT 1774 kb)
12350_2019_1702_MOESM1_ESM.ppt
Literatur
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