Duplex ultrasound is a combination of: (A) A mode and pulse wave doppler, (B) B mode and pulse wave doppler, (C) M mode and spectral doppler, (D) 3D USG and Elastography
Answer is B. 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.