The T-wave: T-wave inversions, hyperacute T-waves, large T-waves, flat T-wavesVideo lecture: The T-wave: normal, inverted (negative) hyperacute and flat T-waves The ST segment: J-point, J-60 point, ST depression, ST elevationThe ST segment: J-point, J-60 point, ST depression, ST elevationThe QT and QTc IntervalThe QT and QTc Interval