What happens to the amount of attenuation if the path length is doubled?

What happens to the amount of attenuation if the path length is doubled?
A . Quadrupled
B . Doubled
C . Halved
D . Quartered

View Answer

Answer: B

Explanation:

Attenuation in ultrasound is directly proportional to the path length. If the path length is doubled, the amount of attenuation is also doubled. Attenuation refers to the reduction in the amplitude and intensity of the ultrasound wave as it travels through tissue, primarily due to absorption, reflection, and scattering. The relationship is linear, so doubling the distance the sound wave travels will result in twice the amount of attenuation.

Reference: ARDMS Sonography Principles and Instrumentation guidelines Kremkau,

F. W. (2015). Diagnostic Ultrasound: Principles and Instruments. Elsevier.