Puchal Añé R, Guirao Marín S, Domènech Vilardell A, Rodríguez Gassén A, Bajén Lázaro M T, Ricart Brulles Y, Murillo Sosa M, Martín-Comín J
Servicio de Medicina Nuclear, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
Rev Esp Med Nucl. 2008 Nov-Dec;27(6):418-23.
The aim of this study was to analyse the relationship between left ventricular ejection fractions (EF) obtained using four different instruments.
Eighty-five EF values were analysed. Gated acquisition was performed with the same gammacamera (SOPHA) using 99mTc-labelled red cells. Each EF was obtained using four processing systems: NXT (SOPHA), Entegra (Gems), Odyssey (Philips) and Esoft (Siemens), always working in automated mode. The paired student's t-test, Spearman correlation and Bland-Altman analysis were used to compare methods, and Deming regression was applied.
Mean values and standard deviations for each program were: NXT: 61 +/- 9; Entegra: 60 +/- 10; Odyssey: 60 +/- 9; Esoft: 60 +/- 10. Although no significant differences were found as a whole and the values were linearly related, the methods are not interchangeable.
The same program should be used in the follow-up of each patient, which is now easily achievable by means of the DICOM standard.
