Duplex ultrasound is a combination of
Duplex Scan Combination of B-mode imaging with Pulsed Doppler USG - gives both anatomical & physiological information of vascular system. Colour Duplex Scan Addition of colour frequency mapping - Colour Duplex imaging.
A mode and pulse wave doppler
B mode and pulse wave doppler
M mode and spectral doppler
3D USG and Elastography
ULTRASOUND