abstract：:In our previous studies, we have introduced model-based "functional biomarkers" or "physiomarkers" of cerebral hemodynamics that hold promise for improved diagnosis of early-stage Alzheimer's disease (AD). The advocated methodology utilizes subject-specific data-based dynamic nonlinear models of cerebral hemodynamics ...

journal_title：Medical engineering & physics

authors： Marmarelis VZ,Shin DC,Orme ME,Zhang R

更新日期：2014-05-01 00:00:00

abstract：OBJECTIVE:To evaluate whether outcomes based on stopwatch time and power output (PO) over a 15m-overground wheelchair sprint test can be used to assess wheelchair-specific anaerobic work capacity, by studying their relationship with outcomes on a Wingate-based 30s-wheelchair ergometer sprint (WAnT). METHODS:Able-bodie...

journal_title：Medical engineering & physics

authors： van der Scheer JW,de Groot S,Vegter RJ,Veeger DH,van der Woude LH

更新日期：2014-04-01 00:00:00

abstract：:Stress shielding of the periprosthetic femur following total hip arthroplasty is a problem that can promote the premature loosening of femoral stems. In order to reduce the need for revision surgery it is thought that more flexible implant designs need to be considered. In this work, the mechanical properties of laser...

journal_title：Medical engineering & physics

authors： Hazlehurst KB,Wang CJ,Stanford M

更新日期：2014-04-01 00:00:00

abstract：:Patients affected by motor disorders of the hand and having residual voluntary movements of fingers or wrist can benefit from self-rehabilitation exercises performed with so-called dynamic hand splints. These systems consist of orthoses equipped with elastic cords or springs, which either provide a sustained stretch o...

journal_title：Medical engineering & physics

authors： Carpi F,Frediani G,Gerboni C,Gemignani J,De Rossi D

更新日期：2014-02-01 00:00:00

abstract：:Tripolar systems have been implanted to reduce the risk of recurrent dislocation. However, there is little known about the dynamic behavior of tripolar hip endoprostheses under daily life conditions and achieved joint stability. Hence, the objective of this biomechanical study was to examine the in vivo dynamics and d...

journal_title：Medical engineering & physics

authors： Fabry C,Kaehler M,Herrmann S,Woernle C,Bader R

更新日期：2014-01-01 00:00:00

abstract：INTRODUCTION:This study compared the initial viscoelastic properties of a segmental tibial defect stabilized with intramedullary nailing and impaction bone grafting to that of a transverse fracture stabilized with intramedullary nailing. MATERIALS AND METHODS:Seven sheep tibiae were tested in compression (1000N), bend...

journal_title：Medical engineering & physics

authors： Costi JJ,Stanley RM,Ding B,Solomon LB

更新日期：2014-01-01 00:00:00

abstract：:Locking compression plates (LCPs) have been used to fix femoral shaft fractures. Previous studies have attempted to identify the best LCP screw positions and numbers to achieve the fixation stability. However, the determined screw positions and numbers were mainly based on the surgeons' experiences. The aim of this st...

journal_title：Medical engineering & physics

authors： Lee CH,Shih KS,Hsu CC,Cho T

更新日期：2014-01-01 00:00:00

abstract：:This study employed a noncontact resonance frequency (RF) detection technique that was developed by our group to evaluate the interfacial bone in in vitro implant-bone models. Based on our method, the implant-bone structure was excited by the acoustic energy of a loudspeaker, and its vibration response was acquired wi...

journal_title：Medical engineering & physics

authors： Pan MC,Zhuang HB,Chen CS,Wu JW,Lee SY

更新日期：2013-12-01 00:00:00

abstract：:During reconstructive surgery of the face, one side may be used as a template for the other, exploiting assumed bilateral facial symmetry. The best method to calculate this plane, however, is debated. A new semi-automatic technique for calculating the symmetry plane of the facial skeleton is presented here that uses s...

journal_title：Medical engineering & physics

authors： Willing RT,Roumeliotis G,Jenkyn TR,Yazdani A

更新日期：2013-12-01 00:00:00

abstract：:A field-usable sleepiness tester could reduce sleepiness related accidents. 15 subjects' postural steadiness was measured with a Nintendo(®) Wii Fit balance board every hour for 24 h. Body sway was quantified with complexity index, CI, and the correlation between CI and alertness predicted by a three-process model of ...

journal_title：Medical engineering & physics

authors： Tietäväinen A,Gates FK,Meriläinen A,Mandel JE,Hæggström E

更新日期：2013-12-01 00:00:00

abstract：:Bone defects can occur in various forms and present challenges to performing a standard micro-CT evaluation of bone quality because most measures are suited to homogeneous structures rather than ones with spatially focal abnormalities. Such defects are commonly associated with pain and fragility. Research involving bo...

journal_title：Medical engineering & physics

authors： Buie HR,Bosma NA,Downey CM,Jirik FR,Boyd SK

更新日期：2013-11-01 00:00:00

abstract：:Scoliosis is a 3D deformity of the spine and rib cage. Extensive validation of 3D reconstruction methods of the spine from biplanar radiography has already been published. In this article, we propose a novel method to reconstruct the rib cage, using the same biplanar views as for the 3D reconstruction of the spine, to...

journal_title：Medical engineering & physics

authors： Grenier S,Parent S,Cheriet F

更新日期：2013-11-01 00:00:00

abstract：:The acetabular cup (AC) is an implant impacted into a bone cavity and used for hip prosthesis surgery. Initial stability of the AC is an important factor for long term surgical success. The aim of this study is to determine the variations of the impact duration during AC implant insertion. Twenty-two bone samples take...

journal_title：Medical engineering & physics

authors： Mathieu V,Michel A,Flouzat Lachaniette CH,Poignard A,Hernigou P,Allain J,Haïat G

更新日期：2013-11-01 00:00:00

abstract：:We observed an anomaly in the human electroencephalogram (EEG) associated with exposure to terrestrial trunked radio (TETRA) Radiofrequency Fields (RF). Here, we characterize the time and frequency components of the anomaly and demonstrate that it is an artefact caused by TETRA RF interfering with the EEG recording eq...

journal_title：Medical engineering & physics

authors： Fouquet NC,Hawken MB,Elliott P,Burgess AP

更新日期：2013-11-01 00:00:00

abstract：:Quantifying the risk of falling (falls risk) would be helpful in treating people with gait disorders. The gait sensitivity norm (GSN) is a stability measure that correlates well to risk of falling in passive dynamic walkers but has not been evaluated on humans or human-like walking models. We assessed the correlation ...

journal_title：Medical engineering & physics

authors： Thangal SN,Talaty M,Balasubramanian S

更新日期：2013-10-01 00:00:00

abstract：:The purpose of this study was to evaluate the effect of wheelchair mass, solid vs. pneumatic tires and tire pressure on physical strain and wheelchair propulsion technique. 11 Able-bodied participants performed 14 submaximal exercise blocks on a treadmill with a fixed speed (1.11 m/s) within 3 weeks to determine the e...

journal_title：Medical engineering & physics

authors： de Groot S,Vegter RJ,van der Woude LH

更新日期：2013-10-01 00:00:00

abstract：OBJECTIVE:Joint space narrowing is an important feature of progressive joint damage and functional impairment in rheumatoid arthritis (RA). Methods to provide a continuous measurement of joint space width have not been adopted in research or clinical settings. High-resolution peripheral quantitative computed tomography...

journal_title：Medical engineering & physics

authors： Barnabe C,Buie H,Kan M,Szabo E,Barr SG,Martin L,Boyd SK

更新日期：2013-10-01 00:00:00

abstract：:The objective of this work is to develop a robust method for human abdominal aortic aneurysm (AAA) centerline detection that can contribute to the accurate computation of features for the prediction of AAA rupture risk. A semiautomatic algorithm is proposed for detecting the lumen centerline in contrast-enhanced abdom...

journal_title：Medical engineering & physics

authors： Zhang H,Kheyfets VO,Finol EA

更新日期：2013-09-01 00:00:00

abstract：AIMS:This study investigated the feasibility of automated differentiation between essential tissue types encountered during laparoscopic colorectal surgery using spectral analysis. METHODS:Wide band (440-1830 nm) spectra were collected using an optical fiber probe and spectrometer from freshly explanted, ex vivo, huma...

journal_title：Medical engineering & physics

authors： Schols RM,Dunias P,Wieringa FP,Stassen LP

更新日期：2013-07-01 00:00:00

abstract：:This study tested the effectiveness of low-level laser therapy (LLLT) in preventing and/or treating osteoporotic trabecular bone. Mice were ovariectomized (OVX) to induce osteoporotic bone loss. The tibiae of eight OVX mice were treated for 5 days each week for 2 weeks by LLLT (660 nm, 3 J) using a minimally invasive ...

journal_title：Medical engineering & physics

authors： Ko CY,Kang H,Seo DH,Jung B,Schreiber J,Kim HS

更新日期：2013-07-01 00:00:00

abstract：:In case of large segmental defects in load-bearing bones, an external fixator is used to provide mechanical stability to the defect site. The overall stiffness of the bone-fixator system is determined not only by the fixator design but also by the way the fixator is mounted to the bone. This stiffness is an important ...

journal_title：Medical engineering & physics

authors： Karunratanakul K,Kerckhofs G,Lammens J,Vanlauwe J,Schrooten J,Van Oosterwyck H

更新日期：2013-07-01 00:00:00

abstract：:Subject-specific FE-models of human long bones have to predict mechanical parameters with sufficient accuracy to be applicable in a clinical setting. One of the main aspects in subject-specific FE-models of bones regarding accuracy is the modeling of the material inhomogeneity. The goal of this study was therefore to ...

journal_title：Medical engineering & physics

authors： Eberle S,Göttlinger M,Augat P

更新日期：2013-07-01 00:00:00

abstract：:Contamination of EEG signals by artefacts arising from head movements has been a serious obstacle in the deployment of automatic neurological event detection systems in ambulatory EEG. In this paper, we present work on categorizing these head-movement artefacts as one distinct class and on using support vector machine...

journal_title：Medical engineering & physics

authors： O'Regan S,Faul S,Marnane W

更新日期：2013-07-01 00:00:00

abstract：BACKGROUND:Verified and validated CT-based high-order finite element (FE) methods were developed that predict accurately the mechanical response of patient-specific intact femurs. Here we extend these capabilities to human femurs undergoing a total hip replacement using cemented prostheses. METHODS:A fresh-frozen huma...

journal_title：Medical engineering & physics

authors： Yosibash Z,Katz A,Milgrom C

更新日期：2013-07-01 00:00:00

abstract：:This article investigates whether prediction of subject-specific physiological data is viable through an individualised computational model of a cochlear implant. Subject-specific predictions could be particularly useful to assess and quantify the peripheral factors that cause inter-subject variations in perception. T...

journal_title：Medical engineering & physics

authors： Malherbe TK,Hanekom T,Hanekom JJ

更新日期：2013-07-01 00:00:00

abstract：:Computational fluid dynamics (CFD) simulations quantifying thoracic aortic flow patterns have not included disturbances from the aortic valve (AoV). 80% of patients with aortic coarctation (CoA) have a bicuspid aortic valve (BAV) which may cause adverse flow patterns contributing to morbidity. Our objectives were to d...

journal_title：Medical engineering & physics

authors： Wendell DC,Samyn MM,Cava JR,Ellwein LM,Krolikowski MM,Gandy KL,Pelech AN,Shadden SC,LaDisa JF Jr

更新日期：2013-06-01 00:00:00

abstract：:Beat detection is a basic and fundamental step in electrocardiogram (ECG) processing. In many ECG applications strong artifacts from biological or technical sources could appear and cause distortion of ECG signals. Beat detection algorithm desired property is to avoid these distortions and detect beats in any situatio...

journal_title：Medical engineering & physics

authors： Kuzilek J,Lhotska L

更新日期：2013-06-01 00:00:00

abstract：:Interest in patient-specific blood-flow circulation modeling has increased substantially in recent years. The availability of clinical data for geometric and elastic properties together with efficient numerical methods has now made model rendering feasible. This work uses 3-D fluid-structure interaction (FSI) to provi...

journal_title：Medical engineering & physics

authors： Reymond P,Crosetto P,Deparis S,Quarteroni A,Stergiopulos N

更新日期：2013-06-01 00:00:00

abstract：:The spectral analysis of crackles sounds has been carried out based on the assumption that they are stationary signals, and the majority of the work on the crackles was accomplished before the publication of the Computerized Respiratory Sound Analysis (CORSA) guidelines. This works characterizes crackles acquired from...

journal_title：Medical engineering & physics

authors： Ponte DF,Moraes R,Hizume DC,Alencar AM

更新日期：2013-04-01 00:00:00

abstract：:Snoezelen(®) multi-sensory (SMS) environment has been commonly applied as a therapeutic strategy to alleviate the symptoms associated to a wide variety of pathologies. Despite most studies have reported a wide range of positive revealed short-term changes associated to SMS intervention, little has been done to systema...

journal_title：Medical engineering & physics

authors： Poza J,Gómez C,Gutiérrez MT,Mendoza N,Hornero R

更新日期：2013-03-01 00:00:00

abstract：:Measurement of accurate in vivo hip joint kinematics in 6-DOF is difficult. Few studies have reported non-invasive measurements of the hip kinematics. The objective of this study was to validate a non-invasive dual fluoroscopic imaging system (DFIS) for measurement of hip kinematics. Bi-lateral hip joints of a cadaver...

journal_title：Medical engineering & physics

authors： Lin H,Wang S,Tsai TY,Li G,Kwon YM

更新日期：2013-03-01 00:00:00

abstract：:Numerical simulations of eye globes often rely on topographies that have been measured in vivo using devices such as the Pentacam or OCT. The topographies, which represent the form of the already stressed eye under the existing intraocular pressure, introduce approximations in the analysis. The accuracy of the simulat...

journal_title：Medical engineering & physics

authors： Elsheikh A,Whitford C,Hamarashid R,Kassem W,Joda A,Büchler P

更新日期：2013-02-01 00:00:00

abstract：:Single-photon emission computed tomography (SPECT) of dopamine transporters with (99m)Tc-TRODAT-1 has recently been proposed to offer valuable information for the diagnosis of Parkinson's disease (PD). Furthermore, High-intensity focused ultrasound (HIFU) is a newly developed technique in which the energy of ultrasoun...

journal_title：Medical engineering & physics

authors： Lee JD,Huang CH,Yang ST,Chu YH,Shieh YY,Chen JW,Lin KJ

更新日期：2013-02-01 00:00:00

abstract：:There is an increasing awareness among the populace of the need for regular health check-up to detect diseases in their early stages and thereby administer treatments in a timely fashion. However, commercially available physiological signal monitoring devices, which may offer clues on the onset of diseases, are time-c...

journal_title：Medical engineering & physics

authors： Chang HT,Chung CG,Chen MW

更新日期：2013-02-01 00:00:00

abstract：:Different probes are used in dermato-cosmetic research to measure the electrical properties of the skin. The principle governing the choice of the geometry and material of the measuring probe is not well defined in the literature and some device's measuring principles are not accessible for the scientific community. T...

journal_title：Medical engineering & physics

authors： Hamed SH,Altrabsheh B,Assa'd T,Jaradat S,Alshra'ah M,Aljamal A,Alkhatib HS,Almalty AM

更新日期：2012-12-01 00:00:00

abstract：:Previous studies investigating thrombus formation have not focused on the physical interaction between red blood cells (RBCs) and thrombus, although they have been speculated that some pathological conditions such as microangiopathic hemolytic anemia (MAHA) stem from interactions between RBCs and thrombi. In this stud...

journal_title：Medical engineering & physics

authors： Kamada H,Imai Y,Nakamura M,Ishikawa T,Yamaguchi T

更新日期：2012-12-01 00:00:00

abstract：:Large Eddy Simulation (LES) is performed to study the physiological pulsatile transition-to-turbulent non-Newtonian blood flow through a 3D model of arterial stenosis by using five different blood viscosity models: (i) Power-law, (ii) Carreau, (iii) Quemada, (iv) Cross and (v) modified-Casson. The computational domain...

journal_title：Medical engineering & physics

authors： Molla MM,Paul MC

更新日期：2012-10-01 00:00:00

abstract：:The Cochlear Microphonic is one of the electrical potentials generated by the ear in response to audible stimuli. It is very difficult to measure the CM non-invasively because it has a very small magnitude (less than 1 μV). A high Common Mode Rejection Ratio (CMRR) and very large bandwidth (5 Hz-20 kHz) biomedical amp...

journal_title：Medical engineering & physics

authors： Masood A,Teal PD,Hollitt C

更新日期：2012-10-01 00:00:00

abstract：INTRODUCTION:A notable characteristic of bariatric surgery is the frequent manipulation of the bowel. The bowel is large, delicate, flexible, and has a natural lubricant on the tissue surface. Therefore the bowel is difficult to grasp and manipulate. Vacuum technique is commonly used in industry for all types of graspi...

journal_title：Medical engineering & physics

authors： Vonck D,Jakimowicz JJ,Lopuhaä HP,Goossens RH

更新日期：2012-10-01 00:00:00

abstract：BACKGROUND:An ideal prosthetic mesh for incisional hernia repair should mimic the anisotropic compliance of the abdominal wall, and at lower loads should exhibit higher distensibility without impairment of safety at higher loads. This study evaluated the biomechanical properties of six meshes in a rabbit model. METHOD...

journal_title：Medical engineering & physics

authors： Konerding MA,Chantereau P,Delventhal V,Holste JL,Ackermann M

更新日期：2012-09-01 00:00:00