Alessia Gimelli1, Riccardo Liga2, Valerio Duce3, Annette Kusch1, Alberto Clemente1, Paolo Marzullo1,4. 1. Fondazione Toscana Gabriele Monasterio, Via Moruzzi, 1, 56124, Pisa, Italy. 2. Cardio-thoracic and Vascular Department, University Hospital of Pisa, Pisa, Italy. riccardo.liga@gmail.com. 3. Cardio-thoracic and Vascular Department, University Hospital of Pisa, Pisa, Italy. 4. CNR, Institute of Clinical Physiology, Pisa, Italy.
Abstract
BACKGROUND: Myocardial perfusion imaging (MPI) performed on traditional single-photon emission computed-tomography cameras has been shown to have a sub-optimal accuracy in detecting multivessel coronary artery disease (CAD). METHODS: Six-hundred and ninety-five patients were submitted to MPI on a novel cadmium-zinc-telluride (CZT) camera and coronary angiography. A coronary stenosis >70% was considered obstructive. In every patient, the summed stress score (SSS) was computed. Moreover, the regional stress scores were also calculated for every coronary territory. RESULTS: Four-hundred and forty-one patients had obstructive CAD in one (28%), two (19%), or three (17%) vessels. At per-patient analysis, the SSS showed a significant accuracy in detecting obstructive CAD (AUC 0.87, P < .001). Specifically, its accuracy was maintained also in patients with double (AUC 0.83; P < .001) or triple-vessels disease (AUC 0.79, P < .001), where CZT was able to correctly identify CAD extent in 64% of patients. On a per-vessel basis, CZT confirmed its high accuracy in detecting obstructive CAD (AUC 0.88, P < .001), independently from the involved coronary vessel. CONCLUSIONS: MPI performed on a CZT camera is highly accurate in detecting obstructive CAD, independently from the coronary artery involved and the overall disease burden.
BACKGROUND: Myocardial perfusion imaging (MPI) performed on traditional single-photon emission computed-tomography cameras has been shown to have a sub-optimal accuracy in detecting multivessel coronary artery disease (CAD). METHODS: Six-hundred and ninety-five patients were submitted to MPI on a novel cadmium-zinc-telluride (CZT) camera and coronary angiography. A coronary stenosis >70% was considered obstructive. In every patient, the summed stress score (SSS) was computed. Moreover, the regional stress scores were also calculated for every coronary territory. RESULTS: Four-hundred and forty-one patients had obstructive CAD in one (28%), two (19%), or three (17%) vessels. At per-patient analysis, the SSS showed a significant accuracy in detecting obstructive CAD (AUC 0.87, P < .001). Specifically, its accuracy was maintained also in patients with double (AUC 0.83; P < .001) or triple-vessels disease (AUC 0.79, P < .001), where CZT was able to correctly identify CAD extent in 64% of patients. On a per-vessel basis, CZT confirmed its high accuracy in detecting obstructive CAD (AUC 0.88, P < .001), independently from the involved coronary vessel. CONCLUSIONS: MPI performed on a CZT camera is highly accurate in detecting obstructive CAD, independently from the coronary artery involved and the overall disease burden.
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Authors: Evgeniy A Nesterov; Konstantin V Zavadovsky; Andrew V Mochula; Alina N Maltseva; Alla A Boshchenko; Andrew E Baev; Sergey L Andreev; Riccardo Liga; Alessia Gimelli Journal: J Nucl Cardiol Date: 2020-10-23 Impact factor: 3.872