4,338 results match your criteria Biomedical Engineering-biomedizinische Technik[Journal]


Optimization of the proposed hybrid denoising technique to overcome over-filtering issue.

Biomed Tech (Berl) 2019 Apr 12. Epub 2019 Apr 12.

Electronics Engineering Department, Kamla Nehru Institute of Technology, Sultanpur 228118, India.

Image denoising has become a crucial task in medical ultrasound (US) imaging due to the presence of speckle or multiplicative noise and additive Gaussian noise. Recently, several denoising techniques such as adaptive wavelet thresholding & joint bilateral (AWT + JB) filter, adaptive fuzzy switching weighted mean (AFSWM) filter and median patch-based locally optimal Wiener (MPBLOW) filter have been proposed to remove the speckle noise. However, these denoising techniques were found to remove noise along with the essential parts of the actual image data which is known as over-filtering. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0101DOI Listing

Obtaining the sGAG distribution profile in articular cartilage color images.

Biomed Tech (Berl) 2019 Apr 5. Epub 2019 Apr 5.

Department of Natural Resources and Environmental Engineering, University of Vigo, 36310 Vigo, Spain.

The articular cartilage tissue is an essential component of joints as it reduces the friction between the two bones. Its load-bearing properties depend mostly on proteoglycan distribution, which can be analyzed through the study of the presence of sulfated glycosaminoglycan (sGAG). Currently, sGAG distribution in articular cartilage is not completely known; it is calculated by means of laboratory tests that imply the inherent inaccuracy of a manual procedure. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0055DOI Listing

A comparative study of tapped and untapped pilot holes for bicortical orthopedic screws - 3D finite element analysis with an experimental test.

Biomed Tech (Berl) 2019 Apr 2. Epub 2019 Apr 2.

Laboratory of Electromechanical Systems (LASEM), National Engineering School of Sfax, University of Sfax, 3038 Sfax, Tunisia.

The aim of this study was to compare the screw-to-bone fixation strength of two insertion techniques: self-tapping screw (STS) and non-self-tapping screw (NSTS). Finite element analysis (FEA) was used for the comparison by featuring three tests (insertion, pull-out and shear) in a human tibia bone model. A non-linear material behavior with ductile damage properties was chosen for the modeling. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0049DOI Listing

Invasive and non-invasive point-of-care testing and point-of-care monitoring of the hemoglobin concentration in human blood - how accurate are the data?

Biomed Tech (Berl) 2019 Mar 27. Epub 2019 Mar 27.

Department of Anesthesiology and Intensive Care Medicine, University Medical Center and University of Lübeck, 23562 Lübeck, Germany.

In this review, scientific investigations of point-of-care testing (POCT) and point-of-care monitoring (POCM) devices are summarized with regard to the measurement accuracy of the hemoglobin concentration. As a common basis, information according to the Bland and Altman principle [bias, limits of agreement (LOA)] as well as the measurement accuracy and precision are considered, so that the comparability can be mapped. These collected data are subdivided according to the manufacturers, devices and procedures (invasive and non-invasive). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0066DOI Listing

Developing viscoelastic contact models and selecting suitable creep function for spherical biological cells.

Biomed Tech (Berl) 2019 Mar 26. Epub 2019 Mar 26.

Robotic Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.

In most contact theories, the most popular of which are the three models of Hertz, Derjaguin, Muller and Toporov (DMT) and Johnson, Kendall and Roberts (JKR), biological cells were considered as an elastic material which is not a proper assumption. The elastic assumption in the case of biological cells could lead to neglecting the loading history as a result of which the stresses and strains applied to the material would not be studied accurately. In this paper, developing the three mentioned elastic models into viscoelastic models, simulating and comparing them with empirical data obtained through the indentation test of the MCF-7 cancer cell showed that the viscoelastic state presents a better prediction of biological cell behavior compared to that of an elastic state. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0106DOI Listing

Investigation of the retention forces of secondary telescopic crowns made from Pekkton® ivory in combination with primary crowns made from four different dental alloys: an in vitro study.

Biomed Tech (Berl) 2019 Mar 15. Epub 2019 Mar 15.

Department of Prosthodontics, Preclinical Education and Dental Materials Science, University of Bonn, Welschnonnenstr. 17, 53111 Bonn, Germany.

The aim of this study was to investigate the retention forces of secondary telescopic crowns made of polyetherketoneketone (PEKK) in combination with primary crowns made of four different dental alloys and to determine whether the retention forces change in the course of up to 5000 simulated wear cycles. A total of four groups of telescopic crowns were investigated: group 1: 10 primary crowns made of a gold alloy (NEOCAST®3), group 2: 10 primary crowns made of a non-precious metal alloy (Girobond NB), group 3: 10 primary crowns made of zirconium (Cercon®base) and group 4: 10 primary crowns made from PEKK (Pekkton®ivory). The corresponding secondary crowns were made from PEKK in all the four groups. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0167DOI Listing
March 2019
4 Reads

On the feasibility of a liquid crystal polymer pressure sensor for intracranial pressure measurement.

Biomed Tech (Berl) 2019 Mar 15. Epub 2019 Mar 15.

Neurosurgery Division, Department of Surgery, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.

Intracranial pressure (ICP) monitoring is crucial in determining the appropriate treatment in traumatic brain injury. Minimally invasive approaches to monitor ICP are subject to ongoing research because they are expected to reduce infections and complications associated with conventional devices. This study aims to develop a wireless ICP monitoring device that is biocompatible, miniature and implantable. Read More

View Article

Download full-text PDF

Source
http://www.degruyter.com/view/j/bmte.ahead-of-print/bmt-2018
Publisher Site
http://dx.doi.org/10.1515/bmt-2018-0029DOI Listing
March 2019
7 Reads

Entropy-based feature extraction technique in conjunction with wavelet packet transform for multi-mental task classification.

Biomed Tech (Berl) 2019 Mar 9. Epub 2019 Mar 9.

Department of Psychology, Uskudar University, Istanbul, Turkey.

Event-related mental task information collected from electroencephalography (EEG) signals, which are functionally related to different brain areas, possesses complex and non-stationary signal features. It is essential to be able to classify mental task information through the use in brain-computer interface (BCI) applications. This paper proposes a wavelet packet transform (WPT) technique merged with a specific entropy biomarker as a feature extraction tool to classify six mental tasks. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0105DOI Listing

Robust and energy-efficient expression recognition based on improved deep ResNets.

Biomed Tech (Berl) 2019 Feb 26. Epub 2019 Feb 26.

Biomedical Engineering Center, Beijing University of Technology, Beijing 100124, China.

To improve the robustness and to reduce the energy consumption of facial expression recognition, this study proposed a facial expression recognition method based on improved deep residual networks (ResNets). Residual learning has solved the degradation problem of deep Convolutional Neural Networks (CNNs); therefore, in theory, a ResNet can consist of infinite number of neural layers. On the one hand, ResNets benefit from better performance on artificial intelligence (AI) tasks, thanks to its deeper network structure; meanwhile, on the other hand, it faces a severe problem of energy consumption, especially on mobile devices. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0027DOI Listing
February 2019
2.425 Impact Factor

Session 1: Young scientist forum.

Biomed Tech (Berl) 2019 Feb;64(s1):1-18

RWTH Aachen University Hospital, Dental Materials and Biomaterials Research, Aachen, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7001DOI Listing
February 2019

Session 14: Poster.

Biomed Tech (Berl) 2019 Feb;64(s1):75-155

University Rostock Medical Center, Cell Biology, Rostock, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7014DOI Listing
February 2019

Session 5: Biomaterials - Inorganic.

Biomed Tech (Berl) 2019 Feb;64(s1):36-40

University of Duisburg-Essen, Institute for Inorganic Chemistry, Essen, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7005DOI Listing
February 2019

Session 10: Biofilms Implant related infections.

Biomed Tech (Berl) 2019 Feb;64(s1):63-65

Hannover Medical School, Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7010DOI Listing
February 2019

Session 3: Biomaterials - Natural Polymers.

Biomed Tech (Berl) 2019 Feb;64(s1):25-29

Leibniz Institute of Polymer Research Dresden, Institute of Biofunctional Polymers, Dresden, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7003DOI Listing
February 2019

Session 8: Biomaterials - Hydrogels.

Biomed Tech (Berl) 2019 Feb;64(s1):53-58

RWTH Aachen University, Dental Materials and Biomaterials Research, Aachen, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7008DOI Listing
February 2019

Session 13: Cell-Material Interaction (Metals).

Biomed Tech (Berl) 2019 Feb;64(s1):72-74

TU Dresden, Max Bergmann Center, Dresden, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7013DOI Listing
February 2019

Session 6: Tissue transitions.

Biomed Tech (Berl) 2019 Feb;64(s1):41-46

Technische Universität Dresden, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, Dresden, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7006DOI Listing
February 2019

Session 11: Biomaterials - Metals.

Biomed Tech (Berl) 2019 Feb;64(s1):66-68

Technische Universität Braunschweig, Institute for Materials, Braunschweig, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7011DOI Listing
February 2019

Session 4: Cell-Material Interaction.

Biomed Tech (Berl) 2019 Feb;64(s1):30-35

Max-Planck Institute for Polymer Research, Mainz, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7004DOI Listing
February 2019

Session 9: Biomaterials -Elektrospinning.

Biomed Tech (Berl) 2019 Feb;64(s1):59-62

University clinic of Wuerzburg, Dept. Tissue Engineering & Regenerative Medicine, Wuerzburg, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7009DOI Listing
February 2019

Session 2: Biofilms/Implant associated infections.

Biomed Tech (Berl) 2019 Feb;64(s1):19-24

University Medical Center Rostock, Institute for Biomedical Engineering, Rostock, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7002DOI Listing
February 2019

Session 7: Translation.

Biomed Tech (Berl) 2019 Feb;64(s1):47-52

Goethe University, Frankfurt am Main, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7007DOI Listing
February 2019

Session 12: Biomaterials.

Biomed Tech (Berl) 2019 Feb;64(s1):69-71

Technische Universität Dresden, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, Dresden, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2019-7012DOI Listing
February 2019

Does airborne ultrasound lead to activation of the auditory cortex?

Biomed Tech (Berl) 2019 Jan 18. Epub 2019 Jan 18.

Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Bundesallee 100, Braunschweig 38116, Germany.

As airborne ultrasound can be found in many technical applications and everyday situations, the question as to whether sounds at these frequencies can be heard by human beings or whether they present a risk to their hearing system is of great practical relevance. To objectively study these issues, the monaural hearing threshold in the frequency range from 14 to 24 kHz was determined for 26 test subjects between 19 and 33 years of age using pure tone audiometry. The hearing threshold values increased strongly with increasing frequency up to around 21 kHz, followed by a range with a smaller slope toward 24 kHz. Read More

View Article

Download full-text PDF

Source
http://www.degruyter.com/view/j/bmte.ahead-of-print/bmt-2018
Publisher Site
http://dx.doi.org/10.1515/bmt-2018-0048DOI Listing
January 2019
11 Reads

Comparative biomechanical evaluation of two technologically different microprocessor-controlled prosthetic knee joints in safety-relevant daily-life situations.

Biomed Tech (Berl) 2018 Dec 12. Epub 2018 Dec 12.

Ottobock SE & Co. KGaA, Clinical Research and Services, Research Biomechanics, 37075 Göttingen, Germany.

Safety-relevant gait situations (walking on stairs and slopes, walking backwards, walking with small steps, simulated perturbations of swing phase extension) were investigated in a motion analysis laboratory with six unilateral transfemoral amputees using two different microprocessor-controlled prosthetic knee joints (Rheo Knee XC, C-Leg). A randomized crossover design was chosen. The study results imply that the performance and safety potential of a microprocessor-controlled knee joint can be associated with the individual control algorithms and the technological concepts that are implemented to generate motion resistances for controlling flexion and extension movements. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0026DOI Listing
December 2018

Non-invasive improved technique for lumbar discus hernia classification based on fuzzy logic.

Biomed Tech (Berl) 2018 Oct 6. Epub 2018 Oct 6.

Clinical Centre Kragujevac, Zmaj Jovina 30, 34000 Kragujevac, Serbia.

This paper presents the improved technique for classification of the type of lumbar discus hernia based on fuzzy logic. The reduced mobility of the foot is one of the symptoms of the disease that occurs because of the displaced discs in the space of two vertebrae. This fact was used for non-invasive discus hernia diagnosis by measuring force values from four sensors placed on both feet (first, second and fourth metatarsal head as well as the heel). Read More

View Article

Download full-text PDF

Source
http://www.degruyter.com/view/j/bmte.ahead-of-print/bmt-2018
Publisher Site
http://dx.doi.org/10.1515/bmt-2018-0013DOI Listing
October 2018
1 Read

Intraoperative mapping of the sensory cortex by time-resolved thermal imaging.

Biomed Tech (Berl) 2018 Oct;63(5):567-572

Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.

The resection of brain tumor requires a precise distinction between eloquent areas of the brain and pathological tumor tissue in order to improve the extent of resection as well as the patient's progression free survival time. In this study, we discuss mathematical tools necessary to recognize neural activity using thermal imaging cameras. The main contribution to thermal radiation of the exposed human cortex is regional cerebral blood flow (CBF). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0229DOI Listing
October 2018
7 Reads

LED for hyperspectral imaging - a new selection method.

Biomed Tech (Berl) 2018 Oct;63(5):529-535

Institute of Electromechanical and Electronic Design, Faculty of Electrical and Computer Engineering, Dresden University of Technology, Helmholtzstr. 10, D-01069 Dresden, Germany.

Hyperspectral imaging (HSI) has become a sophisticated technique in modern applications such as food analyses, recycling technology, medicine, pharmacy and forensic science. It allows one to analyse both spatial and spectral information from an object. But hyperspectral cameras are still expensive due to their extended wavelength range. Read More

View Article

Download full-text PDF

Source
http://www.degruyter.com/view/j/bmte.2018.63.issue-5/bmt-201
Publisher Site
http://dx.doi.org/10.1515/bmt-2017-0120DOI Listing
October 2018
1 Read

Optical imaging methods in medicine: how can we escape the plausibility trap?

Biomed Tech (Berl) 2018 Oct;63(5):507-510

Department of Neurosurgery, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-2001DOI Listing
October 2018

A thermometry software tool for monitoring laser-induced interstitial thermotherapy.

Biomed Tech (Berl) 2018 Sep 22. Epub 2018 Sep 22.

Universitätsklinikum Frankfurt, Institut für Diagnostische und Interventionelle Radiologie (IDIR), Theodor-Stern-Kai 7, Frankfurt am Main 60590, Germany.

The purpose of this study was to develop a thermometry software tool for temperature monitoring during laser-induced interstitial thermotherapy (LITT). C++ programming language and several libraries including DICOM Toolkit, Grassroots DICOM library, Insight Segmentation and Registration Toolkit, Visualization Toolkit and Quasar Toolkit were used. The software's graphical user interface creates windows displaying the temperature map and the coagulation extent in the tissue, determined by the magnetic resonance imaging (MRI) thermometry with the echo planar imaging sequence and a numerical simulation based on the radiation and heat transfer in biological tissues, respectively. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0197DOI Listing
September 2018
1 Read

Intraoperative motion correction in neurosurgery: a comparison of intensity- and feature-based methods.

Biomed Tech (Berl) 2018 Oct;63(5):573-578

Institute of Circuits and Systems, Faculty of Electrical and Computer Engineering, Technische Universität Dresden, 01062 Dresden, Germany.

The intraoperative identification of normal and anomalous brain tissue can be disturbed by pulsatile brain motion and movements of the patient and surgery devices. The performance of four motion correction methods are compared in this paper: Two intensity-based, applying optical flow algorithms, and two feature-based, which take corner features into account to track brain motion. The target registration error with manually selected marking points and the temporal standard deviation of intensity were analyzed in the evaluation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0188DOI Listing
October 2018
1 Read

Dual frequency bioelectrical impedance analysis to estimate hematocrit for prognosis of dengue fever in Indian children.

Biomed Tech (Berl) 2018 Sep 21. Epub 2018 Sep 21.

Department of Electronics and Communication Engineering, Pondicherry Engineering College, Puducherry, India.

A noninvasive investigation to ascertain the hematocrit (HCT) or packed cell volume (PCV) was conducted on 44 hospitalized dengue hemorrhagic fever (DHF) subjects, male and female aged between 3 and 14 years using bioelectrical impedance analysis (BIA). Among the 44 subjects, 30 subjects were confirmed to be non-structural protein-1 (NS1) positive at the time of admission, whose blood investigations such as HCT level, platelet (PLT) count, aspartate aminotransferase (AST) level and alanine aminotransferase (ALT) level were taken for the classification of risk as low risk (LR) and high risk (HR) DHF. Electrical conductivity of blood reflects a linear correlation with HCT. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0174DOI Listing
September 2018
1 Read

Optical measurement of the corneal oscillation for the determination of the intraocular pressure.

Biomed Tech (Berl) 2018 Sep 19. Epub 2018 Sep 19.

University of Bremen, Bremen Institute for Metrology, Automation and Quality Science (BIMAQ), 28359 Bremen, Germany.

Motivation Glaucoma is currently the most common irreversible cause of blindness worldwide. A significant risk factor is an individually increased intraocular pressure (IOP). A precise measurement method is needed to determine the IOP in order to support the diagnosis of the disease and to monitor the outcome of the IOP reduction as a medical intervention. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0093DOI Listing
September 2018
2 Reads

Electrically evoked wrist extensor muscle fatigue throughout repetitive motion as measured by mechanomyography and near-infrared spectroscopy.

Biomed Tech (Berl) 2018 Sep 19. Epub 2018 Sep 19.

Clinical Exercise and Rehabilitation Unit, Discipline of Exercise and Sports Sciences, Faculty of Health Sciences, University of Sydney, Lidcombe, Australia.

Repetitive electrically-evoked muscle contraction leads to accelerated muscle fatigue. This study assessed electrically-evoked fatiguing muscle with changes to mechanomyography root mean square percentage (%RMS-MMG) and tissue saturation index (%TSI) in extensor carpi radialis. Forty healthy volunteers (n=40) performed repetitive electrical-evoked wrist extension to fatigue and results were analyzed pre- and post-fatigue, i. Read More

View Article

Download full-text PDF

Source
http://www.degruyter.com/view/j/bmte.ahead-of-print/bmt-2018
Publisher Site
http://dx.doi.org/10.1515/bmt-2018-0058DOI Listing
September 2018
15 Reads

Development of a wheeled walker braking device using the four-bar mechanism.

Biomed Tech (Berl) 2018 Sep 19. Epub 2018 Sep 19.

Department of Physical Therapy, Kyungnam University, 7 Kyungnamdaehak-ro, Masanhappo-gu, Gyeongsangnam-do, Changwon 51767, Republic of Korea.

The elderly population in many countries has been rising rapidly, and falls are a serious event many elderly people experience. Assistive equipment is actively used to reduce falls among elderly people. Popular types of assistive equipment include canes, electric wheelchairs, and wheeled walkers. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0032DOI Listing
September 2018

A versatile perfusion bioreactor and endothelializable photo cross-linked tubes of gelatin methacryloyl as promising tools in tissue engineering.

Biomed Tech (Berl) 2018 Sep 18. Epub 2018 Sep 18.

Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, Germany.

Size and function of bioartificial tissue models are still limited due to the lack of blood vessels and dynamic perfusion for nutrient supply. In this study, we evaluated the use of cytocompatible methacryl-modified gelatin for the fabrication of a hydrogel-based tube by dip-coating and subsequent photo-initiated cross-linking. The wall thickness of the tubes and the diameter were tuned by the degree of gelatin methacryl-modification and the number of dipping cycles. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0015DOI Listing
September 2018

Algorithms for mapping kidney tissue oxygenation during normothermic machine perfusion using hyperspectral imaging.

Biomed Tech (Berl) 2018 Oct;63(5):557-566

Institute of Biomedical Engineering, Technische Universität Dresden, 01307 Dresden, Germany.

The lack of donor grafts is a severe problem in transplantation medicine. Hence, the improved preservation of existing and the usage of organs that were deemed untransplantable is as urgent as ever. The development of novel preservation techniques has come into focus. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0216DOI Listing
October 2018
1 Read

Hyperspectral imaging as a possible tool for visualization of changes in hemoglobin oxygenation in patients with deficient hemodynamics - proof of concept.

Biomed Tech (Berl) 2018 Oct;63(5):609-616

Department of Dermatology, University Medicine Greifswald, Greifswald, Germany.

There is a lack of imaging tools for the evaluation of spatial alterations in microcirculation including blood oxygen saturation and hemoglobin distribution but recent innovative developments in hyperspectral technology may offer a solution. We examined different hemodynamic disorders in patients suffering from scleroderma, Dupuytren surgery, chronic foot ulcera and skin infections. Superficial and deeper blood oxygen saturation, hemoglobin distribution and water content were determined using hyperspectral imaging (HSI). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0084DOI Listing
October 2018
2 Reads

Wireless video transmission into the MRI magnet room: implementation and evaluation at 1.5T, 3T and 7T.

Biomed Tech (Berl) 2018 Sep 6. Epub 2018 Sep 6.

STIMULATE-Solution Centre for Image Guided Local Therapies, Magdeburg, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0073DOI Listing
September 2018
1 Read

Biomimetic multilayer coatings deliver gentamicin and reduce implant-related osteomyelitis in rats.

Biomed Tech (Berl) 2018 Sep 3. Epub 2018 Sep 3.

Institute for Bioprocessing and Analytical Measurement Techniques (iba) e.V., Department of Biomaterials, 37308 Heilbad Heiligenstadt, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0044DOI Listing
September 2018
1 Read

Application of optical and spectroscopic technologies for the characterization of carious lesions in vitro.

Biomed Tech (Berl) 2018 Oct;63(5):595-602

Technische Universität Dresden, Faculty of Medicine Carl Gustav Carus, Clinic of Operative and Pediatric Dentistry, Dresden, Germany.

The detection of the beginning demineralization process of dental hard tissue remains a challenging task in dentistry. As an alternative to bitewing radiographs, optical and spectroscopic technologies showed promising results for caries diagnosis. The aim of the present work is to give an overview of optical and spectroscopic properties of healthy and carious human teeth in vitro by means of Raman spectroscopy (RS), optical coherence tomography (OCT) and hyperspectral imaging (HSI). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0133DOI Listing
October 2018
2 Reads

Retinal images benchmark for the detection of diabetic retinopathy and clinically significant macular edema (CSME).

Biomed Tech (Berl) 2018 Jul 28. Epub 2018 Jul 28.

Department of Ophthalmology, Rawalpindi Medical University (RMU), Rawalpindi, Pakistan.

Diabetes mellitus is an enduring disease related with significant morbidity and mortality. The main pathogenesis behind this disease is its numerous micro- and macrovascular complications. In developing countries, diabetic retinopathy (DR) is one of the major sources of vision impairment in working age population. Read More

View Article

Download full-text PDF

Source
http://www.degruyter.com/view/j/bmte.ahead-of-print/bmt-2018
Publisher Site
http://dx.doi.org/10.1515/bmt-2018-0098DOI Listing
July 2018
21 Reads

Study of a retinal layer model to generate a spike waveform for a color deficient and strabismus individual.

Biomed Tech (Berl) 2018 Jul 28. Epub 2018 Jul 28.

Department of ECE, SRM IST, Kattankulathur 603 203, India.

The physiological modeling of retinal layers to provide an insight into how the incoming image is converted into its equivalent spike train that can be decoded by the human brain is a key issue. Most of the retinal layer models concentrate mainly on image compression, edge detection and image reconstruction. A retinal layer model to generate spike waveform corresponding to the visual information is not covered much in the literature. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0153DOI Listing

A coefficient-free and continuous blood pressure estimation method based on the arterial lumen area model.

Biomed Tech (Berl) 2018 Jul 27. Epub 2018 Jul 27.

Shanghai Research Institute of Microelectronics (SHRIME), Peking University, Shanghai 201203, China.

Oscillometry is the most popular technique for automatic blood pressure (BP) estimation. This method relies on recording the cuff deflation curve (CDC) from a high suprasystolic BP (SSBP) to a low subdiastolic BP (SDBP) and is very sensitive to noise caused by breathing, motion artifacts, muscle contraction and the environment. We developed a unified BP estimation method involving two integrated sub-procedures based on the arterial lumen area (ALA) model and applied it for continuous BP measurement. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0146DOI Listing
July 2018
2.425 Impact Factor

Hyperspectral imaging in perfusion and wound diagnostics - methods and algorithms for the determination of tissue parameters.

Biomed Tech (Berl) 2018 Oct;63(5):547-556

Department of Oral, Maxillofacial Plastic Surgery, University Medical Center Rostock, D-18057 Rostock, Germany.

Blood perfusion is the supply of tissue with blood, and oxygen is a key factor in the field of minor and major wound healing. Reduced perfusion of a wound bed or transplant often causes various complications. Reliable methods for an objective evaluation of perfusion status are still lacking, and insufficient perfusion may remain undiscovered, resulting in chronic processes and failing transplants. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0155DOI Listing
October 2018

A theoretical study of digital silicon photomultiplier utilization in diffuse optical imaging systems.

Biomed Tech (Berl) 2018 Jul 12. Epub 2018 Jul 12.

School of Electrical Engineering, Iran University of Science and Technology (IUST), Tehran 1684613114, Iran, Phone: +982173225773.

Digital silicon photomultiplier (dSiPM) is introduced for diffuse optical imaging (DOI) applications instead of conventional photomultiplier tubes and avalanche photodiodes (APDs) as a state-of-the-art detector. According to the low-level light regime in DOI applications, high sensitivity and high dynamic range (DR) image sensors are needed for DOI systems. dSiPM is proposed as a developing detector which can detect low-level lights. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0030DOI Listing
July 2018
6 Reads

Setup and initial testing of an endoscope manipulator system for assistance in transoral endoscopic surgery.

Biomed Tech (Berl) 2018 Jul 12. Epub 2018 Jul 12.

Chair for Catheter Technologies, Otto-von-Guericke University, Universitätsplatz 2, 39106 Magdeburg, Germany.

Purpose For the treatment of malignant diseases of the oral cavity and the larynx, a total or partial resection is the standard therapy, while in special cases chemo- and/or external radiation therapy is considered. Transoral access reduces trauma and hospitalization time. Transoral surgery is usually executed using external microscopic imaging. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0109DOI Listing
July 2018
13 Reads

Robust EOG-based saccade recognition using multi-channel blind source deconvolution.

Biomed Tech (Berl) 2018 Jul 5. Epub 2018 Jul 5.

Key Lab of Intelligent Computing and Signal Processing, Anhui University, Hefei 230039, China.

Human activity recognition (HAR) is a research hotspot in the field of artificial intelligence and pattern recognition. The electrooculography (EOG)-based HAR system has attracted much attention due to its good realizability and great application potential. Focusing on the signal processing method of the EOG-HAR system, we propose a robust EOG-based saccade recognition using the multi-channel convolutional independent component analysis (ICA) method. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0018DOI Listing
July 2018
21 Reads
2.420 Impact Factor

Evaluation of a new non-invasive measurement technique based on bioimpedance spectroscopy to estimate blood alcohol content: a pilot study.

Biomed Tech (Berl) 2018 Jun 27. Epub 2018 Jun 27.

Philips Chair for Medical Information Technology, RWTH Aachen University, Pauwelsstr. 20, 52074 Aachen, Germany.

The gold standard for estimating blood alcohol content (BAC) after alcohol consumption is a blood sample analysis. An innovative technology to estimate BAC is based on impedance cardiography and bioimpedance spectroscopy (BIS). This study investigated whether it is possible to estimate increasing blood alcohol levels during a drinking trial with bioimpedance measurement techniques. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2018-0070DOI Listing
June 2018
23 Reads

Investigation of the mirrored-word reading paradigm for BCI implementation.

Biomed Tech (Berl) 2018 Jun 27. Epub 2018 Jun 27.

Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, University of West Indies, St. Augustine, Trinidad.

Brain-computer interface (BCI) applications such as keyboard control and vehicular navigation present significant assistive merit for disabled individuals. However, there are limitations associated with BCI paradigms which restrict a wider adoption of BCI technology. For example, rapid serial visual presentation (RSVP) paradigms can induce seizures in photosensitive epileptic subjects. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/bmt-2017-0223DOI Listing
June 2018
19 Reads