ultraljudsstrålens

Ultraljudsstrålen is a Swedish term that translates to "ultrasound beam." It refers to the focused pulse of sound waves used in medical ultrasound imaging and therapy. These sound waves have frequencies higher than the upper limit of human hearing, typically ranging from 2 to 18 megahertz (MHz) for diagnostic imaging. The ultrasound transducer, a handheld device placed on the skin, emits these short bursts of high-frequency sound. As the sound waves travel through the body, they encounter different tissues and structures, which reflect and scatter them. The transducer then receives these returning echoes. A computer processes the timing and intensity of these echoes to create a real-time image of the internal organs and structures. The characteristics of the ultrasound beam, such as its frequency, wavelength, and focal point, are crucial for determining the resolution and penetration depth of the ultrasound image. Higher frequencies provide better resolution but have less penetration, making them suitable for imaging superficial structures. Lower frequencies offer greater penetration but with lower resolution, ideal for deeper tissues. In therapeutic ultrasound, the beam is used to generate heat or mechanical effects within tissues for pain relief or to promote healing.