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|Authors:||Zheng, YP |
Rheumatoid arthritis (RA)
|Source:||中国医疗设备 (Information of medical equipment), 2011, v. 26, no. 1, p. 25-46 How to cite?|
|Journal:||中国医疗设备 (Information of medical equipment)|
Measurement of soft tissue stiffness can be used to assess the severity of some diseases.This is usually performed by hand palpation in clinics and the operators try to give a qualitative or at most semi-quantitative value of stiffness according to their feelings from the finger.The results are quite subjective and very depend on the experience of the operators.Therefore,it is necessary to develop some quantitative and objective tools to assess the stiffness of soft tissues.In this study,we introduce the tissue ultrasound palpation system (TUPS),which measures the soft tissue stiffness by utilizing the ultrasound transducer itself to indent the tissue and the ultrasound signal to extract the deformation of the tested tissue during indentation.The various applications of TUPS for soft tissue assessment that have been investigated up to date are reviewed in the introduction part.Then we report the application of this system to assess the mechanical properties of plantar soft tissues in patients with rheumatoid arthritis (RA).Results showed that stiffness of soft tissues at the fifth metatarsal head of the rheumatoid feet with deformity[(67.1±38.1) kPa] was significantly larger than that in normal subjects [(46.0±12.1kPa)](p=0.021).The thickness at the first and fifth metatarsal heads in rheumatoid feet was significantly smaller than that in normal subjects (p=0.010 and p=0.027,respectively).Our study showed that foot deformity in RA patients significantly increases the stiffness of plantar soft tissues in the lateral metatarsal region.The TUPS can also be used for a longitudinal follow-up of change of the plantar soft tissue stiffness as an indicator of the progression of rheumatoid feet.
|Rights:||© 2011 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research use.|
© 2011 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
|Appears in Collections:||Journal/Magazine Article|
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Checked on Jan 22, 2017
Checked on Jan 22, 2017
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