2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/166525The physical understanding of a method of detecting mammalian cancer via vocalization during a normal echo-Doppler test is provided. The backscattered ultrasound frequency in the case of a vocal humming resonating in the chest wall is computed: the overall effect is that the signal/noise ratio could be easily improved at no cost. Clinical results are to appear separately elsewhere.4 pages, no figuresMedical Physicstext