A physical therapist chooses to use therapeutic ultrasound for deep heating of the quadriceps muscle. Which...

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A physical therapist chooses to use therapeutic ultrasound for deep heating of the quadriceps muscle. Which set of ultrasound parameters will be MOST effective at increasing the temperature of tissue 3.0 centimeters deep? Oa. 1.0 MHz, 1.5 W/cm2, 100% duty cycle Ob. 3.0 MHz, 1.5 W/cm2, 50% duty cycle Oc. 1.0 MHz, 1.5 W/cm2, 50% duty cycle d. 3.0 MHz, 1.5 W/cm2, 100% duty cycle A physical therapist chooses to use therapeutic ultrasound for deep heating of the quadriceps muscle. Which set of ultrasound parameters will be MOST effective at increasing the temperature of tissue 3.0 centimeters deep? Oa. 1.0 MHz, 1.5 W/cm2, 100% duty cycle Ob. 3.0 MHz, 1.5 W/cm2, 50% duty cycle Oc. 1.0 MHz, 1.5 W/cm2, 50% duty cycle d. 3.0 MHz, 1.5 W/cm2, 100% duty cycle

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