What unit is used for frequency in sonography?

What does Operating Principle 1 rely on?

Sound is classified as a __________ wave.

Scattering allows:

Describe the phenomenon of attenuation in ultrasound imaging and its implications. How does attenuation affect image quality, and what methods are used to compensate for it?

The Doppler effect measures:

Scattering allows:

Harmonics are created because:

What is speckle in sonographic imaging?

Discuss the operating principles of sonography, focusing on the pulse-echo technique and its significance in medical imaging. Explain how the echoes are used to create an image and the importance of echo strength and return time.