文献一覧: Kiyoshi Abe (著者)

11 0 0 0 OA 2009年度関西学院大学先端社会研究所シンポジウム戦争が生み出す社会 Part Ⅱ: Societies Forged by War

著者: 森達也鈴木謙介原口剛阿部潔岩佐将志辻輝之 Tatsuya Mori Kensuke Suzuki Takeshi Haraguchi Kiyoshi Abe Masashi Iwasa Teruyuki Tsuji
雑誌: 関西学院大学先端社会研究所紀要 = Annual review of the institute for advanced social research (ISSN:18837042)
巻号頁・発行日: no.3, pp.63-124, 2010-03-31

2018-01-15 20:05:49
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http://hdl.handle.net/10236/6256

3 0 0 0 OA The coefficient of determination is affected by the attenuation coefficient in attenuation imaging

著者: Shingo Tanaka Noboru Ohba Kiyoshi Abe Yuka Tamoto Kenji Yasui Chihiro Kobayashi Nagomi Saito Koji Miyanishi Satoshi Takahashi Junji Kato
出版者: Japanese Society of Laboratory Medicine
雑誌: Laboratory Medicine International (ISSN:24368660)
巻号頁・発行日: vol.2, no.3, pp.42-49, 2023 (Released:2023-12-29)
参考文献数: 24

Aims: Attenuation imaging (ATI) is a new ultrasonography method of evaluating hepatic steatosis. Attenuation coefficients (ACs) in the region of interest are measured using two-dimensional ultrasonography. ATI also displays the coefficient of determination (R2) as an index of AC reliability. This study aimed to elucidate R2 values in patients who underwent ATI in clinical practice and to determine factors that influence R2 values. Methods: This study included 749 patients who underwent ATI to evaluate hepatic steatosis at a single center. All abdominal ultrasound examinations were performed by one of the five experienced ultrasonographers. The AC and R2 values were measured five times, and the median values were calculated. Multivariate analysis was conducted to identify factors affecting R2 values. Results: One hundred and nine (15%) patients showed R2 values of < 0.80, of which 108 had non-fatty liver. Further, the R2 value was strongly correlated with AC (correlation coefficient = 0.842). Uncomplicated diabetes (Odds ratio [OR], 2.68) and AC (< 0.60 dB/cm/MHz; OR, 72.76) were identified as independent factors associated with low R2 values (< 0.80). Conclusion: ATI in patients with non-fatty liver showed low R2 values. Worldwide standardization of the ATI measurement method is urgently needed for consistent results.