2022 Fiscal Year Final Research Report
Development of elastic modulus estimation technology using pressure distribution measuring device
| Project/Area Number |
19K20752
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 90150:Medical assistive technology-related
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 圧力分布 / 褥瘡 / 機械学習 |
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| Outline of Final Research Achievements |
The goal was to develop a method that simultaneously estimates the thickness and longitudinal elastic modulus of soft tissue from the pressure distribution obtained by a measuring device. In this study, we constructed a soft tissue model considering experimental values using test gel pieces, which have a similar hardness to the soft tissue of a human body.
First, we modeled the relationship between soft tissue thickness, longitudinal elastic modulus, and pressure. We considered spring models for soft tissues with one type of longitudinal elastic modulus and soft tissues with different longitudinal elastic moduli. Next, we developed a method for estimating the longitudinal elastic modulus. We proposed an estimating method to obtain deformation and longitudinal elastic modulus by iteratively estimating soft tissue thickness and longitudinal elastic modulus. Finally, we considered an application of the longitudinal elastic modulus estimation method to multi-layered soft tissues.
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| Free Research Field |
福祉工学
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| Academic Significance and Societal Importance of the Research Achievements |
縦弾性率を推定可能な従来技術として，超音波やMRIを用いたエラストグラフィ技術が存在する．これらのエラストグラフィ技術は，高分解能な計測が可能であるが，簡便ではない．また，これらの装置は，使用時に座位が困難であるなど，体位に制限が多い．
一方，体圧分布測定装置を使用する提案方法は，安価・簡便・携帯性が高いという特徴から，大病院をはじめ，在宅医療や小規模の医療機関での活用も考えられる．研究成果の将来的な効果として，体圧分布測定装置のシートセンサ上で座位や臥位をとることで，DTIの早期発見に有用な生体内部の情報を入手可能になることが期待できる．
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