Research Topics
| Y P ZhengSummaryAffiliation: The Hong Kong Polytechnic University Country: China Publications
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Detail Information
Publications
Measurement of the layered compressive properties of trypsin-treated articular cartilage: an ultrasound investigationY P Zheng
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, China
Med Biol Eng Comput 39:534-41. 2001..The moduli of the digested and undigested portions were 58+/-24 kPa and 470+/-31 kPa, respectively. Similar results were obtained for the cartilage with trypsin digestion for 2 h...- State-of-the-art methods for geometric and biomechanical assessments of residual limbs: a reviewY P Zheng
Jockey Club Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon
J Rehabil Res Dev 38:487-504. 2001..Further developments are needed to facilitate the incorporation of the internal geometric assessments and biomechanical assessments into the current computer-aided design systems for clinical prosthetics... - An ultrasonic measurement for in vitro depth-dependent equilibrium strains of articular cartilage in compressionY P Zheng
Jockey Club Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, People s Republic of China
Phys Med Biol 47:3165-80. 2002..The results suggested that the ultrasound-compression method could be a useful tool for the study of the depth-dependent biomechanical properties of articular cartilage... - Dynamic depth-dependent osmotic swelling and solute diffusion in articular cartilage monitored using real-time ultrasoundY P Zheng
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
Ultrasound Med Biol 30:841-9. 2004..15 mol/L saline. The diffusion of NaCl and the digestion process of proteoglycans induced by trypsin were also successfully monitored in real-time... - Ultrasonic measurement of depth-dependent transient behaviors of articular cartilage under compressionY P Zheng
Jockey Club Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong
J Biomech 38:1830-7. 2005.... - Ultrasound palpation sensor for tissue thickness and elasticity measurement--assessment of transverse carpal ligamentY P Zheng
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, PR China
Ultrasonics 44:e313-7. 2006..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... - Noncontact evaluation of articular cartilage degeneration using a novel ultrasound water jet indentation systemM H Lu
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong SAR, P R China
Ann Biomed Eng 37:164-75. 2009.... - High resolution ultrasound elastomicroscopy imaging of soft tissues: system development and feasibilityY P Zheng
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, People s Republic of China
Phys Med Biol 49:3925-38. 2004..This system can also be potentially used for the assessment of other biological tissues, bioengineered tissues or biomaterials with fine structures... - Strain dependence of ultrasound speed in bovine articular cartilage under compression in vitroH Y Ling
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Ultrasound Med Biol 33:1599-608. 2007..The results suggest that the strain-dependent effect on the US speed in artC should be considered when the US is deployed for the assessment of artC using the compression or indentation test... - Progressive trypsin digestion and serum inhibition in articular cartilage monitored using high-frequency ultrasound in situQ Wang
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, China
Conf Proc IEEE Eng Med Biol Soc 2008:2169-72. 2008..Our findings provide important information of enzyme digestion and inhibition inside articular cartilage. Ultrasound represents a useful visual tool to evaluate the dynamics of models of OA in cartilage specimens in vitro... - Changes in triphasic mechanical properties of proteoglycan-depleted articular cartilage extracted from osmotic swelling behavior monitored using high-frequency ultrasoundQ Wang
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
Mol Cell Biomech 7:45-58. 2010.... - High frequency ultrasound assessment of skin fibrosis: clinical resultsY P Huang
Department of Heath Technology and Informatics, Hong Kong Polytechnic University, Hong Kong, China
Ultrasound Med Biol 33:1191-8. 2007..Further studies are necessary to investigate the feasibility of applying the current measurement for differentiating the severity of skin fibrosis... - Reliability of measurement of skin ultrasonic properties in vivo: a potential technique for assessing irradiated skinY P Huang
Department of Health Technology and Informatics, Hong Kong Polytechnic University, Hong Kong, China
Skin Res Technol 13:55-61. 2007..The aim of the present study is to investigate the reliability of such measurement so as to evaluate its potentials for future clinical applications... - Extraction of mechanical properties of articular cartilage from osmotic swelling behavior monitored using high frequency ultrasoundQ Wang
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China
J Biomech Eng 129:413-22. 2007.... - A novel noncontact ultrasound indentation system for measurement of tissue material properties using water jet compressionM H Lu
Jockey Club Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China
Ultrasound Med Biol 31:817-26. 2005..This novel noncontact water indentation approach could be potentially used for the measurement of the elasticity of small samples and with a fast scanning speed... - Altered osmotic swelling behavior of proteoglycan-depleted bovine articular cartilage using high frequency ultrasoundQ Wang
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, PR China
Phys Med Biol 53:2537-52. 2008..The proposed ultrasound method has been successfully used to measure the transient and inhomogeneous swelling behavior of the degenerated articular cartilage and has the potential for the characterization of osteoarthritis... - Measurement of depth-dependence and anisotropy of ultrasound speed of bovine articular cartilage in vitroS G Patil
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Ultrasound Med Biol 30:953-63. 2004..It was also demonstrated in this study, using additional specimens (5 x 2), that the swelling of artC after detaching from its subchondral bone could cause the change of its sound speed... - Sonomyography: monitoring morphological changes of forearm muscles in actions with the feasibility for the control of powered prosthesisY P Zheng
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, PR China
Med Eng Phys 28:405-15. 2006..The results demonstrated that SMG had potentials for the musculoskeletal control and assessment... - Assessment of muscle fatigue using sonomyography: muscle thickness change detected from ultrasound imagesJ Shi
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
Med Eng Phys 29:472-9. 2007..The muscle deformation at 20s was 3.5+/-1.6%. The results demonstrated that the architectural change of muscles detected using SMG could potentially provide complementary information for SEMG for the muscle fatigue assessment... - Estimation of Young's modulus and Poisson's ratio of soft tissue from indentation using two different-sized indentors: finite element analysis of the finite deformation effectA P C Choi
Rehabilitation Engineering Centre, Kowloon Polytechnic University, Kowloon, China
Med Biol Eng Comput 43:258-64. 2005..After the finite deformation effect of indentation was considered, the error of the calculated Young's modulus could be controlled within 5% (a/h = 1) and 2% (a/h = 2) for deformation up to 10%... - A new scanning approach for limb extremities using a water bag in freehand 3-D ultrasoundQ H Huang
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Ultrasound Med Biol 31:575-83. 2005..The preliminary results obtained in this study demonstrated that this new scanning approach should have potential for the 3-D US imaging of musculoskeletal extremities using freehand scanning... - Development of a portable 3D ultrasound imaging system for musculoskeletal tissuesQ H Huang
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Ultrasonics 43:153-63. 2005..4 GHz CPU and 512 MB memories. It is believed that such a portable volume imaging system will have many applications in the assessment of musculoskeletal tissues because of its easy accessibility... - Development of a foot scanner for assessing the mechanical properties of plantar soft tissues under different bodyweight loading in standingY P Zheng
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China
Med Eng Phys 34:506-11. 2012..Potential applications of the system in clinical studies for characterization and monitoring of foot pathologies such as ageing and diabetes are discussed at the end of this note... - A system for the synchronized recording of sonomyography, electromyography and joint angleQ H Huang
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
Open Biomed Eng J 1:77-84. 2007..It was found that the SEMG signals were not significantly affected by the amount of the ultrasound gel. The system is being used for the study of contractions of various muscles as well as the muscle fatigue... - Site dependence of thickness and speed of sound in articular cartilage of bovine patellaS G Patil
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, People s Republic of China
Ultrasound Med Biol 36:1345-52. 2010..31 +/- 0.41 mm) of the patellae. Although no significant differences in the thickness and speed of sound among the tested sites were observed, it was demonstrated in this study that they did show some degree of site dependence... - Indentation test of soft tissues with curved substrates: a finite element studyM H Lu
Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Hong Kong, China
Med Biol Eng Comput 42:535-40. 2004..This factor depends on the Poisson's ratio, the aspect ratio a/h and the radius ratio a/R... - Application of tissue ultrasound palpation system (TUPS) in objective scar evaluationJoy C M Lau
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
Burns 31:445-52. 2005..01). TUPS was proved to have high inter-rater, test-retest reliability and it had a moderate correlation with the VSS that clinicians used for assessment of the scar. This system is recommended for clinical assessment of scar thickness... - Vital sign monitoring for elderly at home: development of a compound sensor for pulse rate and motionK W Sum
Rehabilitation Engineering Center, Hong Kong Polytechnic University, Hong Kong
Stud Health Technol Inform 117:43-50. 2005..A prototype has been built into a box with a dimension of 2 x 2.5 x 4 cm3. The device includes the sensors, microprocessor, circuits, battery, and a wireless transceiver for communicating data with a data terminal...