Relationship between architectural parameters and sample volume of human cancellous bone in micro-CT scanning.


:Truly representative architectural parameters of trabeculea can be extremely difficult to achieve based on scanning images because of variable porosity and distribution of trabeculae within the specific overall scanned volume of bone. Accordingly, in present study different selective volume of interests, measured from centroid of μ-CT scanned human vertebral body, were analyzed to determine the architectural parameters (BV/TV, BS/BV, Tb.Th, Tb.N, Tb.Sp) of trabeculae within these volumes and to suggest an optimal volume for representative architectural parameters of the overall scanned volume. Nonlinear curve fitting method was also applied to obtain the correlation between the parameters and the volume of interests. The results show different volumes of interests give different morphological indices of BV/TV, BS/BV, Tb.N and Tb.Sp within a specific scanned vertebral body. Tb.Th shows relatively small variation (0.8%) even with sample volume of less than (2mm)(3). Statistical analysis shows that with sample volume of less than (6mm)(3), significant different in the measured BV/TV comparing against the control group. Tb.N and Tb.Sp show significant different values against the control group for volume of interest less than (4mm)(3) and (5mm)(3), respectively. However, no significant differences were observed in the indices of BS/BV and Tb.Th. Present study shows that an optimal volume of interests of greater than (6mm)(3) be selected to predict the architectural parameters of trabeculae of human vertebral bodies.


Med Eng Phys


Yan YB,Qi W,Wang J,Liu LF,Teo EC,Tianxia Q,Ba JJ,Lei W




Has Abstract


2011-07-01 00:00:00














  • Using robotic mechanical perturbations for enhanced balance assessment.

    abstract::Balance impairment is critical for many patient groups such as those with neural and musculoskeletal disorders and also the elderly. Accurate and objective assessment of balance performance has led to the development of several indices based on the measurement of the center of pressure. In this study, a robotic device...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Baselizadeh A,Behjat A,Torabi A,Behzadipour S

    更新日期:2020-09-01 00:00:00

  • Resonant frequency analysis of dental implants.

    abstract::Dental implant stability influences the decision on the determination of the duration between implant insertion and loading. This work investigates the resonant frequency analysis by means of a numerical model. The investigation is done numerically through the determination of the eigenfrequencies and performing stead...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Rittel D,Dorogoy A,Haïat G,Shemtov-Yona K

    更新日期:2019-04-01 00:00:00

  • Data dependent random forest applied to screening for laryngeal disorders through analysis of sustained phonation: acoustic versus contact microphone.

    abstract::Comprehensive evaluation of results obtained using acoustic and contact microphones in screening for laryngeal disorders through analysis of sustained phonation is the main objective of this study. Aiming to obtain a versatile characterization of voice samples recorded using microphones of both types, 14 different set...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Verikas A,Gelzinis A,Vaiciukynas E,Bacauskiene M,Minelga J,Hållander M,Uloza V,Padervinskis E

    更新日期:2015-02-01 00:00:00

  • Low torque levels can initiate a removal of the passivation layer and cause fretting in modular hip stems.

    abstract::Taper connections of modular hip prostheses are at risk of fretting and corrosion, which can result in reduced implant survival. The purpose of this study was to identify the minimum torque required to initiate a removal of the passivation layer at the taper interface as a function of assembly force and axial load. Ti...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Jauch SY,Coles LG,Ng LV,Miles AW,Gill HS

    更新日期:2014-09-01 00:00:00

  • Fuzzy clustering of gait patterns of patients after ankle arthrodesis based on kinematic parameters.

    abstract::Kinematic parameters for 10 normal subjects and 10 patients with ankle arthrodesis are grouped using the fuzzy cluster paradigm. The features chosen for clustering are Euler angles of the sagittal plane in the hindfoot, the forefoot and combined hindfoot and forefoot joints. Gait patterns are identified using informat...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Su F,Wu W,Cheng Y,Chou Y

    更新日期:2001-03-01 00:00:00

  • Number and localization of the implants for the fixed prosthetic reconstructions: on the strain in the anterior maxillary region.

    abstract::Resorption following tooth loss and poor bone quality affect the success of implants in the anterior maxilla. Inappropriate planning can cause implant loss and aesthetics problems that are difficult to resolve. There is a limited literature on the optimum number and location of implants in anterior maxilla for fabrica...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Bölükbaşı N,Yeniyol S

    更新日期:2015-04-01 00:00:00

  • Clinical workflow for personalized foot pressure ulcer prevention.

    abstract::Foot pressure ulcers are a common complication of diabetes because of patient's lack of sensitivity due to neuropathy. Deep pressure ulcers appear internally when pressures applied on the foot create high internal strains nearby bony structures. Monitoring tissue strains in persons with diabetes is therefore important...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Bucki M,Luboz V,Perrier A,Champion E,Diot B,Vuillerme N,Payan Y

    更新日期:2016-09-01 00:00:00

  • Effect of longitudinal anatomical mismatch of stenting on the mechanical environment in human carotid artery with atherosclerotic plaques.

    abstract::Longitudinal anatomic mismatch (LAM) of stenting (i.e., a stenotic artery segment is not fully covered by a deployed stent) worsens the mechanical environment in the treated artery, which most likely is the cause for the associated high risks of restenosis, myocardial infarction and stent thrombosis. To probe the poss...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Fan Z,Liu X,Sun A,Zhang N,Fan Z,Fan Y,Deng X

    更新日期:2017-10-01 00:00:00

  • Sensitivity analysis of the position of the intervertebral centres of reaction in upright standing--a musculoskeletal model investigation of the lumbar spine.

    abstract::The loads between adjacent vertebrae can be generalised as a single spatial force acting at the intervertebral centre of reaction. The exact position in vivo is unknown. However, in rigid body musculoskeletal models that simulate upright standing, the position is generally assumed to be located at the discs' centres o...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Zander T,Dreischarf M,Schmidt H

    更新日期:2016-03-01 00:00:00

  • Diver monitoring by ultrasonic digital data telemetry.

    abstract::A through-water ultrasonic data telemetry system using burst-mode frequency shift keying (FSK) is described. The system can be adapted for the transmission of data from various sensors, but it has been designed principally for monitoring the respiratory rate, heart rate, temperature and depth of a free-swimming diver ...

    journal_title:Medical engineering & physics

    pub_type: 临床试验,杂志文章


    authors: Woodward B,Bateman SC

    更新日期:1994-07-01 00:00:00

  • The Windkessel model revisited: a qualitative analysis of the circulatory system.

    abstract::In this paper, we derive a comprehensive computational model to estimate the arterial pressure and the cardiac output of humans, by refining and adapting the well-established equations of the Windkessel theory. The model inputs are based on patient specific factors such as age, sex, smoking and fitness habits as well ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Tsanas A,Goulermas JY,Vartela V,Tsiapras D,Theodorakis G,Fisher AC,Sfirakis P

    更新日期:2009-06-01 00:00:00

  • Pulse transit time in paediatric respiratory sleep studies.

    abstract::Pulse transit time (PTT) has emerged over the recent decades as a simple and non-invasive measure to quantify inspiratory effort changes in adults with sleep disordered breathing (SDB). Hence, this shows promise to be an effective screening tool for the paediatrics. However, little is known about its utility and suita...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章,评审


    authors: Foo JY

    更新日期:2007-01-01 00:00:00

  • Dielectric elastomers as actuators for upper limb prosthetics: challenges and opportunities.

    abstract::Recent research has indicated that consumers of upper limb prostheses desire lighter-weight, anthropomorphic devices. The potential of dielectric elastomer (DE) actuators to better meet the design priorities of prosthesis users is explored. Current challenges are critically reviewed with respect to (1) durability, (2)...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章,评审


    authors: Biddiss E,Chau T

    更新日期:2008-05-01 00:00:00

  • Power spectra accuracy improvement by a method for leakage effect reduction.

    abstract::A method for leakage effect reduction by a modification of the classical spectra obtained Discrete Fourier Transform is proposed. The properties of the new method are investigated analytically and validated through synthesized signals, processed by the developed complete computational procedure. This combines the prop...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Mitov IP

    更新日期:1997-07-01 00:00:00

  • Comparison of calibration methods for accelerometers used in human motion analysis.

    abstract::In the fields of medicine and biomechanics, MEMS accelerometers are increasingly used to perform activity recognition by directly measuring acceleration; to calculate speed and position by numerical integration of the signal; or to estimate the orientation of body parts in combination with gyroscopes. For some of thes...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章,评审


    authors: Nez A,Fradet L,Laguillaumie P,Monnet T,Lacouture P

    更新日期:2016-11-01 00:00:00

  • Application of higher order statistics/spectra in biomedical signals--a review.

    abstract::For many decades correlation and power spectrum have been primary tools for digital signal processing applications in the biomedical area. The information contained in the power spectrum is essentially that of the autocorrelation sequence; which is sufficient for complete statistical descriptions of Gaussian signals o...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章,评审


    authors: Chua KC,Chandran V,Acharya UR,Lim CM

    更新日期:2010-09-01 00:00:00

  • A novel integrated mechanomyogram-vocalization access solution.

    abstract::We introduce a novel dual-switch control paradigm based on the simultaneous measurement of frontalis muscle mechanomyography (MMG) and vocalizations (humming) using a single contact microphone attached to the forehead. Vibrations of the face and skull during vocalization are manifested as periodic high-frequency compo...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Alves N,Falk TH,Chau T

    更新日期:2010-10-01 00:00:00

  • Motion quality evaluation of upper limb target-reaching movements.

    abstract::Fitts' Law was extended in the polar coordinate system, and a set of indices for human motion evaluation is proposed. In this paper, the index of difficulty and the index of performance are introduced as the general indices for the quality measure of plane target-to-target movement. As an example, the target-reaching ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Yang N,Zhang M,Huang C,Jin D

    更新日期:2002-03-01 00:00:00

  • Reconstruction of dental ultrasonic scaler 3D vibration patterns from phase-related data.

    abstract::Ultrasonic scalers are used in dentistry for removing mineralised plaque, known as calculus, from tooth surfaces. Though there is much information relating to the longitudinal vibrations of scaler probes, corresponding lateral data is limited. Understanding the lateral motion of ultrasonic probes is essential as, when...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Lea SC,Landini G

    更新日期:2010-07-01 00:00:00

  • Computed tomography (CT)-compatible remote center of motion needle steering robot: Fusing CT images and electromagnetic sensor data.

    abstract::Lung cancer is the most common cause of cancer-related death, and early detection can reduce the mortality rate. Patients with lung nodules greater than 10 mm usually undergo a computed tomography (CT)-guided biopsy. However, aligning the needle with the target is difficult and the needle tends to deflect from a strai...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Shahriari N,Heerink W,van Katwijk T,Hekman E,Oudkerk M,Misra S

    更新日期:2017-07-01 00:00:00

  • The effect of the subcutaneous fat on the transfer of current through skin and into muscle.

    abstract::The present investigation was conducted to see the effect of subcutaneous fat on the transmission characteristics of an electrical stimulus applied to the skin and conducted to skeletal muscle. Two groups of subjects participated. In one, the subjects were three males and three females whose average age was 24.6+/-1.5...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Petrofsky J

    更新日期:2008-11-01 00:00:00

  • A complete, non-lumped, and verifiable set of upper body segment parameters for three-dimensional dynamic modeling.

    abstract::Dynamic models of the human trunk have been extensively used to investigate the biomechanics of lower back pain and postural instability in different populations. Despite their diverse applications, previous models rely on intrinsic upper body segment parameters (UBSP), e.g., each segment's mass-inertia characteristic...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Vette AH,Yoshida T,Thrasher TA,Masani K,Popovic MR

    更新日期:2011-01-01 00:00:00

  • Fluid pressure driven fibril reinforcement in creep and relaxation tests of articular cartilage.

    abstract::Biological tissues exhibit diverse mechanical behaviors because of complex material properties. As has been shown for ligaments and intervertebral discs, mathematical models often appear to well predict load responses individually by adjusting model parameters, but likely fail to describe several different load respon...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Li LP,Korhonen RK,Iivarinen J,Jurvelin JS,Herzog W

    更新日期:2008-03-01 00:00:00

  • Validated computational framework for efficient systematic evaluation of osteoporotic fracture fixation in the proximal humerus.

    abstract::The high rate of fixation failure in osteoporotic proximal humerus fractures indicate the need for improved solutions. Computer simulations may help to overcome the limitations of the gold standard biomechanical testing in evaluating the performance of new implants and enhance the effectivity and outcome of the design...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Varga P,Inzana JA,Gueorguiev B,Südkamp NP,Windolf M

    更新日期:2018-07-01 00:00:00

  • Characterization of crackles from patients with fibrosis, heart failure and pneumonia.

    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

    pub_type: 杂志文章


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

    更新日期:2013-04-01 00:00:00

  • Development of a home ankle exerciser.

    abstract::A portable, lightweight home ankle exerciser was designed and built by the Biomedical Engineering Department of University Hospital in London, Ontario, Canada. The ankle exerciser incorporates several unique features that overcomes the drawbacks of exercise equipment presently available. For optimal muscle strengtheni...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Petrosenko RD,Vandervoort AA,Chesworth BM,Porter MM,Campbell GJ

    更新日期:1996-06-01 00:00:00

  • Study on gastric interdigestive pressure activity based on phase space reconstruction and FastICA algorithm.

    abstract::To investigate the features of the gastric interdigestive pressure activity under normal physiological conditions, we have developed the wireless radiotelemetry capsule based on a telemetry technique. Twelve healthy volunteers participated in this study. Pressure activity data which are an important index of gastric m...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章


    authors: Huang B,Yan G,Zan P,Li Q

    更新日期:2009-04-01 00:00:00

  • Application of soft tissue modelling to image-guided surgery.

    abstract::The deformation of soft tissue compromises the accuracy of image-guided surgery based on preoperative images, and restricts its applicability to surgery on or near bony structures. One way to overcome these limitations is to combine biomechanical models with sparse intraoperative data, in order to realistically warp t...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章,评审


    authors: Carter TJ,Sermesant M,Cash DM,Barratt DC,Tanner C,Hawkes DJ

    更新日期:2005-12-01 00:00:00

  • An improved approach for measurement of stroke volume during treadmill exercise.

    abstract::In this study, a new ensemble averaging technique was developed to measure cardiac output during treadmill exercise. Each dz/dt peak is used as a starting point for ensemble averaging, instead of the conventionally used R point of ECG, in order to prevent the peak dz/dt waveform (C point) to be smoothed, which results...

    journal_title:Medical engineering & physics

    pub_type: 临床试验,杂志文章


    authors: Song CG,Kim DW

    更新日期:2003-07-01 00:00:00

  • Assessment of gait sensitivity norm as a predictor of risk of falling during walking in a neuromusculoskeletal model.

    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

    pub_type: 杂志文章


    authors: Thangal SN,Talaty M,Balasubramanian S

    更新日期:2013-10-01 00:00:00