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KMID : 1137820140350040081
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의공학회지
2014 Volume.35 No. 4 p.81 ~ p.86
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Quantitative Assessment of Tremor in PD Using a Wearable System on Both Hands
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Lee Hong-Ji
Kim Sang-Kyong
Kim Han-Byul
Jeon Hyo-Seon
Park Hye-Young
Jung Yu-Jin
Kim Jeong-Hwan
Jeon Beom-Seok
Park Kwang-Suk
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Abstract
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One of the methods for Parkinson’s disease(PD) tremor evaluation is the Clinical Tremor Rating Scale(CTRS). However, the method has some limitations that clinician ratings can vary because the scores are subjectively rated. In addition, most researches usually collected data measured on the more affected arm. In this study, we developed a portable wearable system(SNUMAP system) for measuring PD tremor. The SNUMAP system captures 3-dimensional motion using tri-accelerometer and tri-gyroscope on finger and wrist. 40 PD patients participated in resting tremor and postural tremor tasks, while wearing the system on both hands simultaneously. Estimated tremor scores from Leave-One-Out Cross Validation for regression were highly correlated to the average clinician CTRS scores for rest tremor(r2 = 0.87, RMSE = 0.48) and postural tremor(r2 = 0.82, RMSE = 0.48). Therefore, the quantitative assessment model can improve treatment of PD patients.
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KEYWORD
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Quantitative PD tremor assessment, Wearable system, Tri-accelerometer and tri-gyroscope, Tremor severity
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