title: Comparison of the prognostic value of myocardial perfusion imaging using a CZT-SPECT camera with a conventional anger camera.
abstract: 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 OBJECTIVE: 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 RESULTS: 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 CONCLUSION: 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.
authors: Department of Cardiology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. ronlima@hotmail.com.|Nuclear Medicine, Clínica de Diagnóstico por Imagem, Rio de Janeiro, Brazil. ronlima@hotmail.com.
authors: Ronaldo
authors: R
authors: Lima
authors: Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors: Thais
authors: T
authors: Peclat
authors: Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors: Thalita
authors: T
authors: Soares
authors: Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors: Caio
authors: C
authors: Ferreira
authors: Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors: Ana Carolina
authors: AC
authors: Souza
authors: Department of Cardiology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors: Gabriel
authors: G
authors: Camargo
mesh_terms: D001938:Brazil / Q000453:epidemiology; D002104:Cadmium / Q000528:radiation effects; D015897:Comorbidity; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging* / Q000401:mortality* / Q000601:surgery; D016757:Death, Sudden, Cardiac / Q000453:epidemiology*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005260:Female; D015902:Gamma Cameras / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D055414:Myocardial Perfusion Imaging / Q000295:instrumentation* / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D018570:Risk Assessment / Q000379:methods; D012680:Sensitivity and Specificity; D015996:Survival Rate; D013691:Tellurium / Q000528:radiation effects; D015899:Tomography, Emission-Computed, Single-Photon / Q000295:instrumentation* / Q000706:statistics & numerical data; D016896:Treatment Outcome; D015032:Zinc / Q000528:radiation effects
chemical_list: C474490:CdZnTe; D002104:Cadmium; D015032:Zinc; D013691:Tellurium
keywords: SPECT; coronary artery disease; myocardial perfusion imaging