What is the typical frequency range for diagnostic ultrasound?

The typical frequency range for diagnostic ultrasound is generally between 1 to 15 MHz. This frequency range is crucial because it strikes a balance between depth of penetration and resolution of the imaging. Lower frequencies tend to penetrate deeper tissues but offer less resolution, while higher frequencies provide better resolution but do not penetrate as deep.

In the context of abdominal and pelvic imaging, frequencies around 2 to 5 MHz are often used, as they can penetrate sufficiently to visualize deeper structures. For smaller, superficial organs or vascular structures, higher frequencies, reaching up to 15 MHz, are employed for improved detail. This frequency selection is based on the physics of ultrasound propagation and the desired outcomes of the imaging practice.

Thus, the 1 to 15 MHz range is optimal for most diagnostic applications in clinical settings, ensuring effective imaging across various tissues and organs.