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Feasibility of using Auto Mod‐ MPI system, a novel technique for automated measurement of fetal modified myocardial performance index
Author(s) -
Lee M.Y.,
Won H.S.,
Jeon E.J.,
Yoon H. C.,
Choi J. Y.,
Hong S. J.,
Kim M.J.
Publication year - 2014
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1002/uog.13247
Subject(s) - reproducibility , intraclass correlation , medicine , limits of agreement , nuclear medicine , bland–altman plot , biomedical engineering , mathematics , statistics
Objectives To evaluate the reproducibility of measurement of the fetal left modified myocardial performance index (Mod‐ MPI ) determined using a novel automated system . Methods This was a prospective study of 116 ultrasound examinations from 110 normal singleton pregnancies at 12 + 1 to 37 + 1 weeks' gestation. Two experienced operators each measured the left Mod‐ MPI twice manually and twice automatically using the Auto Mod‐ MPI system. Intra‐ and interoperator reproducibility were assessed using intraclass correlation coefficients ( ICCs ) and the manual and automated measurements obtained by the more experienced operator were compared using Bland–Altman plots and ICCs . Results Both operators successfully measured the left Mod‐ MPI in all cases using the Auto Mod‐ MPI system. For both operators, intraoperator reproducibility was higher when performing automated measurements ( ICC = 0.967 and 0.962 for Operators 1 and 2, respectively) than when performing manual measurements ( ICC = 0.857 and 0.856 for Operators 1 and 2, respectively). Interoperator agreement was also better for automated than for manual measurements ( ICC = 0.930 vs 0.723, respectively). There was good agreement between the automated and manual values measured by the more experienced operator . Conclusions The Auto Mod‐ MPI system is a reliable technique for measuring fetal left Mod‐ MPI and demonstrates excellent reproducibility. Copyright © 2013 ISUOG. Published by John Wiley & Sons Ltd .