1218669 LQT long QT 71 1218664 LQT long QT syndrome 60 1218660 LQT Lesion Quantification Toolkit 4 1218667 LQT linear quadratic tracking 3 1218659 LQT lactose quick test 2 1218663 LQT long QT interval 2 1218657 LQT lactose intolerance quick test 1 1218668 LQT linear quadratic tracking problem 1 1218665 LQT long QT time 1 1218666 LQT lot quality sampling technique 1 1218656 LQT Lot Quality Technique 1 1218661 LQT LQTHIFAEV 1 1218658 LQT LQTS type 1 1218662 LQT luminance quantization table 1