Which term is used for a diagnostic device that assesses blood flow by emitting sound waves?

Which term is used for a diagnostic device that assesses blood flow by emitting sound waves?

• A. Liposuction
• B. Radiology
• C. Doppler
• D. Lingual

Answer: (C)

Using sound waves to assess blood flow relies on the Doppler effect: moving blood cells cause a frequency shift in the reflected ultrasound. A Doppler device emits ultrasound and analyzes that shift to determine the speed and direction of blood flow. This technique is essential for evaluating arteries and veins, detecting blockages, and assessing perfusion, and it appears in various forms such as color Doppler and spectral Doppler to visualize and measure flow. Liposuction is a surgical procedure unrelated to diagnostics; radiology is the broader imaging field (which includes ultrasound), and lingual relates to the tongue.

Using sound waves to assess blood flow relies on the Doppler effect: moving blood cells cause a frequency shift in the reflected ultrasound. A Doppler device emits ultrasound and analyzes that shift to determine the speed and direction of blood flow. This technique is essential for evaluating arteries and veins, detecting blockages, and assessing perfusion, and it appears in various forms such as color Doppler and spectral Doppler to visualize and measure flow. Liposuction is a surgical procedure unrelated to diagnostics; radiology is the broader imaging field (which includes ultrasound), and lingual relates to the tongue.