Discrimination of thoracic spine from muscle based on their difference in ultrasound reflection and scattering characteristics

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Purpose: Medical ultrasound is often used to specify the puncture position during epidural anesthesia. However, visualization of the thoracic spine is difficult because of the complex structure, i.e., it is difficult to determine whether the thoracic spine or muscle is depicted. Therefore, this study aims to distinguish bone from muscle tissue using the differences in reflection and scattering characteristics of ultrasound. Methods: We experimentally investigated the difference in signals received from bone and muscle. We proposed a new parameter utilizing the ratio of the amplitude of the received signals averaged in a wide range around the ideal delay line and that only along the ideal delay line, to emphasize the bone. Results: First, we confirmed the difference in signals received from bone and muscle tissue by basic experiments. We also investigated the difference by in vitro experiments using chicken thigh and in vivo experiments in humans. In both experiments, the proposed method succeeded to clearly depict bone, suppressing the depiction of muscle, compared with conventional B-mode imaging. Conclusion: Using the difference in the characteristics of reflection from bone and scattering from muscle tissue, we could distinguish bone from muscle tissue with the proposed method.

本文言語English
ページ(範囲)3-11
ページ数9
ジャーナルJournal of Medical Ultrasonics
47
1
DOI
出版ステータスPublished - 2020 1 1

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング

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