An ultrasonic source (the main ultrasound transducer: MT) excites the BL from the left-hand side by means of an input acoustic pressure signal defined by a series of repeated pulses. Each pulse is centred at the central frequency xm
An ultrasonic source (the main ultrasound transducer: MT)excites the BL from the left-hand side by means of an input acousticpressure signal defined by a series of repeated pulses. Eachpulse is centred at the central frequency xm