Application of Bone Fracture Evaluation Using A-Mode Ultrasound System

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G Vijay Kumar
Dr. G.V Raju,P NarendraBabu, G V GeethaMadhavi


This paper presents a novel method of bone fracture evaluation based on A-Mode ultrasound. Utilising the pulse echo method, the
attenuation of 1 MHz ultrasound wave propagating through a normal and fractured bone was investigated. Two types of bone fracture were
investigated, namely the linear fracture and comminuted fracture. An ultrasound transducer was used to transmit the sound wave to the normal
and fractured bone in the body, simulated using a goat’s bone encased in gelatine. The transducer then captured the reflected echoes to be
viewed via an oscilloscope. The echo signal indicated the time used by the sound wave to travel back and forth from the bone surface. The
echo was filtered and the power spectral density was calculated for attenuation measurement based on insertion loss method. The comparison
of power spectral density from a normal and fractured bone showed that average signal power on the fractured bone was lower than the
normal bone by 4.3dB for both linear and comminuted fractures. Based on the result, the ultrasound signal attenuation showed a potential for
use to detect bone fracture; nevertheless, further studies are still needed to determine the type of fractures. The present finding shows the
potential of ultrasound in diagnosing bone fracture as an adjunct to x-ray imaging.

Key-Words: Bone fracture, 1D ultrasound, attenuation


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