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[Not Available]. | LitMetric
The field of nuclear medicine is entering a new era of gamma-camera technology. Solid-state SPECT/CT systems will gradually replace the thallium-activated sodium-iodide NaI(Tl) systems. This digital technology allows drastic improvements in image quality, radiotracer dose reduction, and procedure efficiency. This pictorial review presents our initial experience on an NM/CT 870 CZT system (GE Healthcare), equipped with dual-head cadmium zinc telluride (CZT) detectors, for I-123 metaiodobenzylguanidine (MIBG) imaging in pediatric neuroblastoma. On planar imaging, CZT shows greater image quality than at conventional gamma-camera using the Infinia Hawkeye (GE Healthcare). Physiologic structures such as salivary glands and myocardium show sharper borders with a more notable signal-to-noise ratio at CZT than conventional gamma camera. On SPECT imaging, the CZT scanner, combined with resolution recovery, demonstrates either comparable or greater image quality at 80% of the conventional gamma camera’s acquisition time. Due to the 2.46-mm detector pixel with fully registered collimator holes matching each pixel and direct conversion of photons into electrical signals, the CZT gamma camera system provides significant advantages in photon localization and energy resolution.
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