[Freezing of Gait Detection System for Parkinson's Patients Based on Inertial Measurement Unit]

Luan Ma; Bochen Li; Juanjuan He; Zhiming Yao; Xianjun Yang; Dong Liang

doi:10.3969/j.issn.1671-7104.2019.04.002

[Freezing of Gait Detection System for Parkinson's Patients Based on Inertial Measurement Unit]

Zhongguo Yi Liao Qi Xie Za Zhi. 2019 Jul 30;43(4):238-242. doi: 10.3969/j.issn.1671-7104.2019.04.002.

[Article in Chinese]

Authors

Luan Ma¹, Bochen Li^{2

3}, Juanjuan He^{2

3}, Zhiming Yao², Xianjun Yang², Dong Liang¹

Affiliations

¹ Anhui University, Hefei, 230601.
² Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031.
³ University of Science and Technology of China, Hefei, 230026.

PMID: 31460711
DOI: 10.3969/j.issn.1671-7104.2019.04.002

Abstract

In order to detect freezing of gait of Parkinson's patients automatically, a system based on inertial measurement unit to detect freezing of gait for Parkinson's patients is established. The two inertial measurement units are respectively fixed on the left and right ankles of the patient to be measured, the freezing index is calculated by windowed Fourier transform, the freezing threshold is calculated based on the freezing index during normal walking, and the freezing index and the freezing threshold are compared to complete the detection of freezing of gait. The experimental results show that the number of freezing of gait occurrences in Parkinson's patients is accurately detected, and it has high sensitivity and specificity, which can assist doctors to objectively assess the patient's condition.

Keywords: freeze index; freeze threshold; freezing of gait; inertial measurement unit (IMU).

MeSH terms

Diagnostic Equipment* / standards
Gait Disorders, Neurologic* / diagnosis
Gait Disorders, Neurologic* / etiology
Humans
Parkinson Disease* / complications
Sensitivity and Specificity
Walking