Principles of Mechanical Ventilation 7: Calculating I:E ratio in Volume Control 

This video demonstrates how to calculate IE ratio, Ti, Te, and TCT in volume control.
It should be noted that some modern Ventilators allow Ti to be selected in "Volume Control". Such modes are not truly volume control, but Pressure Regulated Volume Control (PRVC), or a version of it. We will cover PRVC in later videos.
OP