Development of appropriate test food and receiving coils for use in cine MRI acquisition performed for evaluating swallowing

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K19193
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 57060:Surgical dentistry-related
• Research Institution: Osaka University
• Principal Investigator: TSUJIMOTO Tomomi 大阪大学, 大学院歯学研究科, 助教 (00632150)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 超高速MRI / 嚥下機能 / 放射線治療

Outline of Final Research Achievements

The purpose of this study was to develop of appropriate test food and receiving coils for use in cine MRI acquisition performed for evaluating　swallowing. Eight volunteers underwent cine MRI using the FIESTA method.It was able to get moving image that confirmed the flow of the test food bolus from oral cavity to the pharyngeal space in the midline sagittal section.In addition, there were individual differences in the appropriate test food in healthy volunteers. Therefore, it is necessary to study the appropriate test food for patients with disease or the elderly.

Free Research Field

歯科放射線学

Academic Significance and Societal Importance of the Research Achievements

一般的に嚥下機能評価に用いられる動態検査は、エックス線を使用した方法が主流で、放射線被曝の観点から反復して検査を行うことが躊躇される。そこで被曝のない超高速MRIを嚥下機能検査として活用できるとなれば、患者への侵襲は減少されると予想された。本研究ではMRI撮像でも被験者の頭部の正中矢状断画像にて口腔期から咽頭期までの食塊の流れが確認できたため、今後嚥下機能評価に応用できる可能性が示唆された。