Evaluation of left ventricular diastolic function with a dedicated cadmium-zinc-telluride cardiac camera: Comparison with Doppler echocardiography

Alessia Gimelli, Riccardo Liga, Emilio Maria Pasanisi, Assuero Giorgetti, Gavino Marras, Brunella Favilli, Paolo Marzullo

Research output: Contribution to journalArticle

Abstract

Aims: To evaluate the relationships between measures of left ventricular (LV) filling dynamics at cadmium-zinc-telluride (CZT) imaging and indexes of LV diastolic function at transthoracic echocardiography. Methods and results: Two hundred and forty-seven patients underwent myocardial perfusion imaging at rest and after stress with a low-dose CZT protocol and a baseline transthoracic echocardiography study. All patients were submitted to invasive or computed coronary angiography. The peak filling rate (PFR) and the time to PFR (TPFR) were derived from gated CZT images as measures of LV filling dynamics. LV diastolic function was also evaluated at echocardiography and the presence of significantly increased LV filling pressures determined. Increased LV filling pressures at transthoracic echocardiography were evident in 103 (42%) patients. Interestingly, independently from the presence of coronary artery disease, therewasa strict correlation between the presence and severity of LV diastolic dysfunction at echocardiography and CZT-derived measures of filling dynamics, i.e. PFR (P = 0.001) and TPFR (P = 0.001). At receiving operating characteristic analysis, a composite index of reduced PFR (≤2.11 end-diastolic volumes -1) and increased TPFR (>234 ms) showed a sensitivity of 84% and a specificity of 67% in unmasking the presence of elevated LV filling pressures at echocardiography. Conclusions: CZT-derived measures of LV filling dynamics correlate with echocardiographic parameters of diastolic function and may identify the presence of increased LV filling pressures.

Original languageEnglish
Pages (from-to)972-979
Number of pages8
JournalEuropean Heart Journal Cardiovascular Imaging
Volume15
Issue number9
DOIs
Publication statusPublished - 2014

Keywords

  • CZT
  • Diastolic function
  • Doppler echocardiography
  • Filling pressures
  • Peak filling rate

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Radiology Nuclear Medicine and imaging
  • Medicine(all)

Fingerprint Dive into the research topics of 'Evaluation of left ventricular diastolic function with a dedicated cadmium-zinc-telluride cardiac camera: Comparison with Doppler echocardiography'. Together they form a unique fingerprint.

  • Cite this