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Title: Ultrasound palpation sensor for tissue thickness and elasticity measurement - assessment of transverse carpal ligament
Authors: Zheng, Yong-Ping
Li, Z. M.
Choi, Pong-chi
Lu, Min-Hua
Chen, Xin
Huang, Qing-Hua
Subjects: Palpation
Ultrasound palpation
Tissue elasticity
Soft tissue
Carpal tunnel syndrome
Issue Date: 22-Dec-2006
Publisher: Elsevier
Source: Ultrasonics, 22 Dec. 2006, v. 44, supp. 1, p. e313-e317.
Abstract: Palpation is a traditional diagnostic procedure for health care professionals to use their fingers to touch and feel the body soft tissues. It is a common clinical approach, though it is rather subjective and qualitative and the palpation results may vary among different people. Tissue ultrasound palpation sensor (TUPS) provides a feasible solution that makes the palpation of soft tissues not subjective feeling any more. It is comprised of an ultrasound transducer together with a load cell to form the finger-sized probe. The probe is used to push against the soft tissue surface to measure the thickness and elasticity of the soft tissues. TUPS has been successfully applied to the assessment of various human tissues. Recently, we have improved TUPS, which can now be linked to personal computer (PC) via universal serial bus (USB) and provide a better user-interface. The information of ultrasound signal and indentation force is displayed on PC in real time during measurement. In this paper, we introduce the recent application of TUPS for the assessment of the transverse carpal ligament. The tissues at the carpal tunnel regions of five normal male subjects were tested using TUPS. The results showed that the average thickness of the tissues covering the carpal tunnel ligament and the tunnel region was 7.98 ± 1.05 mm and 9.59 ± 1.12 mm, respectively. Under a compression force of 20 N applied by a cylindrical ultrasound indentor with a diameter of 9 mm, the stiffness of the soft tissue layer and the tunnel region was 6.72 ± 2.10 N/mm and 15.63 ± 8.42 N/mm, respectively. It is expected that TUPS can be a potential tool for non-invasive assessment of carpal tunnel syndrome.
Rights: Ultrasonics © 2006 Elsevier B.V. The journal web site is located at
Type: Journal/Magazine Article
DOI: 10.1016/j.ultras.2006.06.018
ISSN: 0041-624X
Appears in Collections:HTI Journal/Magazine Articles

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