Development of a synchronized system for continuous acquisition and analysis of ultrasound joint angle, and EMG

Qinghua Huang, Yongping Zheng, Xin Chen, Jun Shi

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Ultrasound and electromyography (EMG) are two of the most often used diagnostic tools for muscles. However, there is lack of a system for continuously capturing both signals with a synchronized procedure. This study presents a new system for this purpose. The system comprises an ultrasound scanner, a pulser/receiver, an EMG amplifier, and a PC with A/D converter cards for data acquisition and analysis. The A-mode and B-mode ultrasound data, which were digitized by the A/D converter and a video capture card respectively, could be simultaneously captured by the PC together with the surface EMG (SEMG) signal, which was digitized by another data acquisition card. Time markers for all frames of ultrasound and SEMG signals were recorded to synchronize the two data streams. The tissue deformation was extracted inform the ultrasound signals or images using cross-correlation algorithms. The RMS and spectrum of SEMG was calculated to study the muscle activity. In addition, the joint angle signal was also be synchronized with ultrasound and SEMG signals. The experiments involving 5 subjects were carried out to test the performance of the system. Preliminary results showed that the muscle deformations extracted from the ultrasound data were well correlated with the changes of SEMG RMS. The system may have potential values in the investigation of muscle properties and activities.
Original languageEnglish
Title of host publicationProceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
Pages989-992
Number of pages4
Volume7 VOLS
Publication statusPublished - 1 Dec 2005
Event2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005 - Shanghai, China
Duration: 1 Sep 20054 Sep 2005

Conference

Conference2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
Country/TerritoryChina
CityShanghai
Period1/09/054/09/05

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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