[Correlation between left ventricular ejection fraction assessed by gated SPECT and radionuclide ventriculography in patients with ischemic cardiomyopathy].
BACKGROUND
Recently, the use of Gated SPECT to assess ejection fraction, volumes and ventricular wall motion has been suggested. The aim of this study is to compare the ejection fraction (EF) obtained by Gated SPECT (QGS, Cedars Sinai) with the values obtained through equilibrium ventriculography in patients with ischemic heart disease.


METHODS
We studied 50 consecutive patients that were diagnosed by equilibrium radioisotopic ventriculography and Gated SPECT with a dual protocol (TI-201 rest/Tc-99m SestaMIBI stress) using the QGS, Cedars Sinai software.


RESULTS
We found a 92% correlation between both tests. In the subgroup analysis, the higher correlation (r = 0.89) was found in group 2, which included patients with moderate ventricular dysfunction (EF 30-50%), whereas, in patients with severe ventricular dysfunction (group 3, EF < 30%), the correlation was lower (r = 0.76) than in group 2, but higher than in patients with EF > 50% (group 1).


CONCLUSIONS
There is a good correlation between EF obtained with Gated SPECT and equilibrium ventriculography, regardless of the EF value.
Alexánderson
Erick
E
Departamento de Medicina Nuclear, Instituto Nacional de Cardiología Ignacio Chávez, INCICH, Juan Badiano No. 1 Col. Sección XVI, Tlalpan 14080 México, D.F. alexanderick@yahoo.com
Gómez-Martín
Diana
D
Fermon
Salomón
S
Meave
Aloha
A
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003326:Coronary Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000000981:diagnostic imaging*; D015635:Radionuclide Ventriculography; D015203:Reproducibility of Results; D013318:Stroke Volume; D017256:Technetium Tc 99m Sestamibi; D013794:Thallium Radioisotopes; D015899:Tomography, Emission-Computed, Single-Photon; D016277:Ventricular Function, Left
D013794:Thallium Radioisotopes; D017256:Technetium Tc 99m Sestamibi