B (brightness) mode, is the use of grey scale imaging in ultrasound renders a two-dimensional image in which the organs and tissues of interest are depicted as points of variable brightness.
Color Doppler uses standard ultrasound methods to convert Doppler sounds into colors that are overlaid on the image of the blood vessel. These colours represent the qualitative parameters of haemodynamic behaviour and direction of blood flow through the vessel.
M-Mode, or Motion Mode is the display of a one-dimensional image that is used for analysing moving body parts commonly in cardiac and fetal cardiac imaging.
