Which eponym refers to technology used to produce audible sounds from the body (such as blood flowing though an artery or the heartbeat of a fetus)?

Question

Quizplus · Accepted Answer

The eponym "Doppler" refers to the technology known as Doppler ultrasound which uses sound waves to detect and measure the movement of blood through the body, including the flow of blood through arteries and veins, as well as the heartbeat of a fetus. This technology is often used in medical settings to diagnose various conditions and monitor fetal development during pregnancy. The other eponyms listed (Curie, Rem, Roentgen) refer to radiation-related units and phenomena.

Which Eponym Refers to Technology Used to Produce Audible Sounds