A brief look at the use of attenuation in ultrasound scans.
Written in 2008; 841 words; 6 sources; MLA; $ 29.95
Paper Summary:
The paper explains the anatomy of attenuation and how it is used in ultrasound scans to determine to a higher degree the image quality of a CT scan. The paper looks at several studies on CT imaging results and the use of attenuation-corrected images.
From the Paper:
"Attenuation means a reduction in intensity and amplitude in a radio signal. Radio signals are used in medicine in the medium of ultrasound. Measured in decibels (dB) per unit length of medium, attenuation is represented by the coefficient of the medium in question (dB/cm, dB/km, and so forth) (Zagzebski 3).
"Attenuation is used in ultrasound physics and is the reduction of the beam amplitude, as a function of the distance it goes through the medium being imaged. One has to account for attenuation effects because reduced signal amplitude affects the image quality. By adjusting the amplitude to account for the attenuation in the ultrasound beam going through the medium, loss of energy at the desired depth is achieved (Bushong 2)."
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