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Measurement of ultrasonic attenuation in diabetic neuropathic sciatic nerves for diagnostic and therapeutic applications. | LitMetric

Measurement of ultrasonic attenuation in diabetic neuropathic sciatic nerves for diagnostic and therapeutic applications.

Ann Biomed Eng

Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, No. 35, Keyan Road, Zhunan, Miaoli, 35053, Taiwan, ROC,

Published: August 2014

AI Article Synopsis

  • Researchers investigated the use of ultrasound to diagnose peripheral neuropathy in rats, focusing on minimizing nerve damage during pain management with heat.
  • A diabetic peripheral neuropathy model was established, and the sciatic nerves from various stages of neuropathy were analyzed using ultrasound and histological techniques.
  • Results indicated significant differences in ultrasonic attenuation coefficients across different weeks of neuropathy, suggesting that the sciatic nerve's attenuation is higher than that of other tissues like the cat brain and cow liver.

Article Abstract

Measurements of ultrasonic attenuation in the sciatic nerves of rats were performed to verify the feasibility of ultrasound diagnosis of peripheral neuropathy and to avoid damage to the nerves caused by overheating in pain management applications. A rat model of diabetic peripheral neuropathy was established. The proximal-segment and middle-segment sciatic nerves of control and neuropathic rats were dissected for the attenuation measurement. Two commercial ultrasound transducers and a self-developed experimental platform were used in the measurements. Using H&E staining and transmission electron (TE) microscopy, morphological analysis of the control and neuropathic nerves was performed to determine the relationship between attenuation and the histology of the nerves. The experimental results showed that the attenuation coefficients of the control, second-week, fourth-week, and eighth-week neuropathic nerves were -6.68 ± 0.50, -5.61 ± 0.34, -6.27 ± 0.40, and -7.10 ± 0.35 dB/cm at 2.68 MHz, respectively. The respective values at 7.50 MHz were -14.96 ± 0.79, -12.65 ± 0.28, -13.98 ± 1.07, and -16.00 ± 0.54 dB/cm. The changes in the attenuation coefficients were significantly different among the second-week, fourth-week, and eighth-week DN nerves. Additionally, the ultrasonic attenuation coefficient of the rat sciatic nerve was fourfold that of the cat brain and cow liver and twofold that of human muscle.

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Source
http://dx.doi.org/10.1007/s10439-014-0989-5DOI Listing

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