Machado, T.M. e Costa, E.T. 2015. A comparative study using both coded excitation and conventional pulses in the evaluation of signal to noise ratio sensitivity and axial resolution in ultrasonic A-mode scan. Revista Brasileira de Física Médica. 5, 1 (out. 2015), 35–40. DOI:https://doi.org/10.29384/rbfm.2011.v5.n1.p35-40.