Comparison of the prognostic value of myocardial perfusion imaging using a CZT-SPECT camera with a conventional anger camera

Recent studies have shown that myocardial perfusion imaging (mpi) in cadmium-zinc-telluride (czt) cameras allow faster exams with less radiation dose but there are little data comparing its prognosis information with that of dedicated cardiac na-i spect cameras the objective of this study is to compare the prognostic value of mpi using an ultrafast protocol with low radiation dose in a czt-spect and a traditional one. group 1 was submitted to a two-day mibi protocol in a conventional camera, and group 2 was submitted to a 1-day mibi protocol in czt camera. mpi were classified as normal or abnormal, and perfusion scores were calculated. propensity score matching methods were performed 3554 patients were followed during 33±8 months. groups 1 and 2 had similar distribution of age, gender, body mass index, risk factors, previous revascularization, and use of pharmacological stress. group 1 had more abnormal scans, higher scores than group 2. annualized hard events rate was higher in group 1 with normal scans but frequency of revascularization was similar to normal group 2. patients with abnormal scans had similar event rates in both groups new protocol of mpi in czt-spect showed similar prognostic results to those obtained in dedicated cardiac na-i spect camera, with lower prevalence of hard events in patients with normal scan.