Application of New Swallowing Evaluation without X-ray using Piezoelectricity

2014 Fiscal Year Final Research Report

• Project/Area Number: 24500574
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Niigata University
• Principal Investigator: KIMURA Shinji 新潟大学, 医歯学総合病院, 准教授 (40361901)
• Co-Investigator(Kenkyū-buntansha): INOUE Makoto 新潟大学, 医歯学系, 教授 (00303131) ; NOMURA Shuichi 新潟大学, 医歯学系, 教授 (40018859) ; UETA Kouichirou 日本大学, 歯学部, 教授 (80313518) ; SAKURAI Naoki 新潟大学, 医歯学系, 助教 (50251830)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 摂食・嚥下機能評価 / ピエゾセンサー

Outline of Final Research Achievements

This study aimed to elucidate the relationship between the piezoelectric waveform latency, hyoid bone movement and the pharyngeal transit time (PTT) during swallowing, and evaluate the applicability of piezoelectric film for non-invasive dysphagia screening. Forty-one healthy subjects were divided into three age groups, younger (n=8), middle-aged (n=9), and older (n=24). Motion analysis of the hyoid bone using videofluorography (VF), waveform analysis of the front neck using piezoelectric films were performed simultaneously. Latencies of the three movement phases were defined as upward (VFS1), forward (VFS2), and returning to starting position (VFS3). The three phases of the piezoelectric waveform were defined as PS1, PS2, and PS3, respectively. VFS1-3 and PS1-3 were significantly correlated. Swallowing evaluation using piezoelectric film may be a valuable method for dysphagia screening.

Free Research Field

リハビリテーション医学