Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Automated segmentation of the incus and malleus ossicles in conventional tri-dimensional computed tomography images
This article proposes a fully automated computational solution to segment the incus and malleus ear ossicles in conventional tri-dimensional X-ray computed tomography images. The solution uses a registration-based segmentation paradigm, followed by image segmentation refinement. It was tested against a dataset comprising 21 computed tomography volumetric images of the ear acquired using standard protocols and with resolutions varying from 0.162 x 0.162 x 0.6 to 0.166 x 0.166 x 1.0 mm3. The images used were randomly selected from subjects who had had a computed tomography examination of the ear due to ear-related pathologie...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Oliveira, F. P., Faria, D. B., Tavares, J. M. R. Tags: Original Articles Source Type: research

Genotoxicity effect, antioxidant and biomechanical correlation: Experimental study of agarose-chitosan bone graft substitute in New Zealand white rabbit model
This study evaluated the agarose–chitosan biocompatibility by determining the in vivo genotoxicity, oxidative stress balance that correlated with the hardness mechanical property. Moreover, the histopathological and quantitative elements analyzed by using inductively coupled plasma optical emission spectrometry were determined. After 30 days of implantation, the in vivo analysis of genotoxicity showed that agarose–chitosan did not induce chromosome aberration or micronucleus damage. A significant decrease in thiobarbituric and acid-reactive substance was observed after agarose–chitosan implantation in the...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Jebahi, S., Saleh, G. B., Saoudi, M., Besaleh, S., Oudadesse, H., Mhadbi, M., Rebai, T., Keskes, H., Feki, A. E. Tags: Original Articles Source Type: research

Predict human body indentation lying on a spring mattress using a neural network approach
This article presents a method to predict and assess the interaction between a human body and a spring mattress. A three-layer artificial neural network model was developed to simulate and predict an indentation curve of human spine, characterized with the depth of lumbar lordosis and four inclination angles: cervicothoracic, thoracolumbar, lumbosacral and the back-hip (β). By comparing the spinal indentation curves described by the optimal evaluation parameters (depth of lumbar lordosis, cervicothoracic, thoracolumbar and lumbosacral), a better design of five-zone spring mattresses was obtained for individuals to hav...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Zhong, S., Shen, L., Zhou, L., Guan, Z. Tags: Original Articles Source Type: research

Validation of an optical system to measure acetabular shell deformation in cadavers
This study supports the view that the ATOS III Triple Scan optical system fulfils the necessary requirements to accurately measure shell deformation in cadavers. (Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine)
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Dold, P., Bone, M. C., Flohr, M., Preuss, R., Joyce, T. J., Deehan, D., Holland, J. Tags: Original Articles Source Type: research

The influence of computational assumptions on analysing abdominal aortic aneurysm haemodynamics
In conclusion, the deformation and von Mises stress can be approximately found by static finite element analysis, while for compliant models a full transient fluid–structure interaction analysis is required for acquiring the fluid flow phenomenon. (Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine)
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Ene, F., Delassus, P., Morris, L. Tags: Original Articles Source Type: research

The narwhal (Monodon monoceros) cementum-dentin junction: A functionally graded biointerphase
This study highlights the graded structural, mechanical, and chemical natural characteristics of a biological interphase known as the cementum–dentin junction layer and their effect in resisting mechanical loads. From a structural perspective, light and electron microscopy techniques illustrated the layer as a wide 1000–2000 μm graded zone consisting of higher density continuous collagen fiber bundles from the surface of cementum to dentin, that parallels hygroscopic 50–100 μm wide collagenous region in human teeth. The role of collagen fibers was evident under compression testing during which the l...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Grandfield, K., Chattah, N. L.-T., Djomehri, S., Eidelmann, N., Eichmiller, F. C., Webb, S., Schuck, P. J., Nweeia, M., Ho, S. P. Tags: Original Articles Source Type: research

Design and testing of prototype handheld scanning probes for optical coherence tomography
In this study, testing the quality of the material of one of the most used types of dental prosthesis, metalo-ceramic is thus demonstrated. (Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine)
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - September 9, 2014 Category: Biomedical Engineering Authors: Demian, D., Duma, V.-F., Sinescu, C., Negrutiu, M. L., Cernat, R., Topala, F. I., Hutiu, G., Bradu, A., Podoleanu, A. G. Tags: Original Articles Source Type: research

Erratum
The incorrect text for this article was published in Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine [227:7] – July/2013 pp. 815–820, on account of a publisher error. The correct text should be as follows: Bilateral asymmetry in microarchitecture of trabecular bone in male c57bl/6 mouse tibia: implication for experimental sample size estimations Funding This research was supported by Leading Space Core Technology Development Program through the National Research Foundation of Korea (NRF) funded by th...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Tags: Erratum Source Type: research

Characterisation of debris from laser and mechanical cutting of bone
Laser cutting of bones has been proposed as a technology in orthopaedic surgery. In this short study, the laser–bone interaction was examined using a pulsed erbium-doped yttrium aluminium garnet laser and compared to a conventional cutting technique. Microscopic analysis revealed the nature of waste debris and showed higher proportions of finer particles for conventional sagittal sawing compared to laser cutting. (Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine)
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Rachmanis, N., McGuinness, G. B., McGeough, J. A. Tags: Technical notes Source Type: research

Feasibility of using mixtures of silicone elastomers and silicone oils to model the mechanical behaviour of biological tissues
Mixtures of silicone elastomer and silicone oil were prepared and the values of their Young’s moduli, E, determined in compression. The mixtures had volume fractions, $$\phi $$ , of silicone oil in the range of 0–0.73. Measurements were made, under displacement control, for strain rates, $$\stackrel{\cdot }{\varepsilon }$$ , in the range of 0.04–3.85 s–1. The behaviour of $$E$$ as a function of $$\phi $$ and $$\stackrel{\cdot }{\varepsi...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Ahmadzadeh, S. M. H., Hukins, D. W. Tags: Technical notes Source Type: research

Study of the effects of age and body mass index on the carotid wall vibration: Extraction methodology and analysis
This study aims to non-invasively extract the vibrations of the carotid wall and evaluate the changes in the carotid artery wall caused by age and obesity. Such evaluation can increase the possibility of detecting wall stiffness and atherosclerosis in its early stage. In this study, a novel method that uses a phase-tracking method based on the continuous wavelet transform calculates the carotid wall motion from the ultrasound radio frequency signals. To extract the high-frequency components of the wall motion, wall vibration, the empirical mode decomposition was then used. The posterior wall (intima-media) motion and vibra...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Yousefi Rizi, F., Setarehdan, S. K., Behnam, H., Alizadeh Sani, Z. Tags: Original Articles Source Type: research

Profiling the third-body wear damage produced in CoCr surfaces by bone cement, CoCr, and Ti6Al4V debris: A 10-cycle metal-on-metal simulator test
Particles of bone cement (polymethyl methacrylate), CoCr and Ti6Al4V were compared for their abrasion potential against CoCr substrates. This appears to be the first study utilizing CoCr and Ti6Al4V particulates to abrade CoCr bearings and the first study profiling the morphology of third-body abrasive wear scratches in a hip simulator. The 5 mg debris allotments (median size range 140–300 µm) were added to cups mounted both inverted and anatomically with metal-on-metal (MOM) bearings in a 10-cycle, hip simulator test. Surface abrasion was characterized by roughness indices and scratch profiles. Compared to thi...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Halim, T., Burgett, M., Donaldson, T. K., Savisaar, C., Bowsher, J., Clarke, I. C. Tags: Original Articles Source Type: research

Forces in spinal cannulation and breaches ex vivo
Conclusion: A large range of cannulation and breach forces and torques were measured due to variations in bone quality and geometry, as experienced clinically. This is the first time that the absolute and relative force and torque levels have been reported, to our knowledge. (Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine)
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Blair-Pattison, A., Hu, R. W., Swamy, G., Anglin, C. Tags: Original Articles Source Type: research

Experimental validation of finite element modelling of a modular metal-on-polyethylene total hip replacement
Finite element models are becoming increasingly useful tools to conduct parametric analysis, design optimisation and pre-clinical testing for hip joint replacements. However, the verification of the finite element model is critically important. The purposes of this study were to develop a three-dimensional anatomic finite element model for a modular metal-on-polyethylene total hip replacement for predicting its contact mechanics and to conduct experimental validation for a simple finite element model which was simplified from the anatomic finite element model. An anatomic modular metal-on-polyethylene total hip replacement...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Hua, X., Wang, L., Al-Hajjar, M., Jin, Z., Wilcox, R. K., Fisher, J. Tags: Original Articles Source Type: research

Experimental and computational investigation of Morse taper conometric system reliability for the definition of fixed connections between dental implants and prostheses
Nowadays, dental implantology is a reliable technique for treatment of partially and completely edentulous patients. The achievement of stable dentition is ensured by implant-supported fixed dental prostheses. Morse taper conometric system may provide fixed retention between implants and dental prostheses. The aim of this study was to investigate retentive performance and mechanical strength of a Morse taper conometric system used as implant-supported fixed dental prostheses retention. Experimental and finite element investigations were performed. Experimental tests were achieved on a specific abutment–coping system,...
Source: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - August 8, 2014 Category: Biomedical Engineering Authors: Bressan, E., Lops, D., Tomasi, C., Ricci, S., Stocchero, M., Carniel, E. L. Tags: Original Articles Source Type: research