マサウジ　ノブオ   Nobuo Masauzi
  政氏　伸夫
   所属   教育文化学部 心理カウンセリング学科
   職種   教授
言語種別 英語
発行・発表の年月 2024/06/21
形態種別 学術論文
査読 査読あり
標題 Estimation of red blood cell aggregation size using power spectrum considering
density of red blood cells in focal region
執筆形態 共著
掲載誌名 Japanese Journal of Applied Physics
掲載区分国外
出版社・発行元 物理系学術誌刊行センター (PCPAP)
巻・号・頁 63(6),pp.06SP11-1-06SP11-10
総ページ数 10
著者・共著者 Rina Takeyama, Shohei Mori, Nobuo Masauzi, Mototaka Arakawa, Satoshi Yashiro, Yasushi Ishigaki, and
Hiroshi Kanai
概要 We have studied a noninvasive and quantitative method for measuring the aggregate size of red blood cells (RBCs). In our previous study, the scattering power spectrum obtained from the vascular lumen was fitted to the reference scattering spectra calculated from the scattering spectrum of a single-sphere scatterer. In this paper, we propose a method for calculating the reference scattering spectra by summing the scattering spectra
for numerous scatterers in the ultrasound focal region. By applying this method to the size estimation of microparticles simulating RBC aggregates, the estimated sizes are found to be close to the true values. In in vivo measurements, the estimated sizes at rest are equivalent to the size of a single sphere with the same volume as an RBC, and those during avascularization are larger than those at rest, which is reasonable. The proposed method has the potential to accurately estimate the size of RBC aggregates.