Attenuation - Wikipedia
Attenuation in ultrasound is the reduction in amplitude of the ultrasound beam as a function of distance through the imaging medium. Accounting for attenuation effects in ultrasound is important because a reduced signal amplitude can affect the quality of the image produced.
Ultrasound interactions and attenuation | Radiology Key
2016年3月10日 · Learn what attenuation means in ultrasound and how it affects the image quality. Find out the factors and processes that influence attenuation, such as frequency, absorption, reflection, scattering, refraction and divergence.
Physics of Ultrasound - Radiology Key
2017年4月2日 · Learn the basic physics used in ultrasound imaging, such as piezoelectric effect, sound waves, frequency, attenuation, reflection, and refraction. See illustrations and sonograms demonstrating the effects of different factors on the image quality and appearance.
Physics of ultrasound - ScienceDirect
2021年1月1日 · Learn how ultrasound waves are generated, transmitted and reflected by different tissues, and how they are used for various medical applications. The article explains the concepts of frequency, amplitude, wavelength, speed, impedance, reflection …
Learn about the different mechanisms and effects of attenuation of acoustic waves, such as absorption, scattering, and relaxation. Find out how to calculate the attenuation coefficient and the intensity of sound in a medium with losses.
Attenuation of ultrasound waves in tissue Attenuation is the term used to account for loss of wave amplitude (or ‘‘signal’’) due to all mechanisms, including absorption, scattering, and mode conversion
Radiopaedia.org
Attenuation in ultrasound refers to the decrease in amplitude and intensity of sound waves as they travel through tissue.
Learn about the properties, propagation, reflection and attenuation of ultrasound waves in biological tissue. Ultrasound is an acoustic wave with frequencies greater than 20 kHz and requires a medium to travel through and has compressions and rarefactions.
Physics of Ultrasound - Radiology Key
2020年3月19日 · Absorption and Attenuation. Attenuation is the loss of intensity with distance traveled, caused by scattering and absorption of the incident beam. Scattering has a strong dependence on increasing ultrasound frequency.
Ultrasound - Medical Imaging Systems - NCBI Bookshelf
2018年8月3日 · Medical ultrasound is considered one of the least harmful imaging techniques available today and is even used during pregnancy. Therapeutical use of ultrasound can be found in gallstone and kidney stone therapies, where high intensity localized ultrasound is …