153 results match your criteria Biomedical engineering letters[Journal]


Significance of considering respiratory movement in estimating sleep stage.

Biomed Eng Lett 2020 May 18;10(2):321-322. Epub 2020 Mar 18.

1Faculty of Health Cand Life Science, Research Centre of Intelligent Healthcare, Coventry University, Coventry, CV1 5FB UK.

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http://dx.doi.org/10.1007/s13534-020-00154-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235097PMC

A promising wound dressing based on alginate hydrogels containing vitamin D3 cross-linked by calcium carbonate/d-glucono-δ-lactone.

Biomed Eng Lett 2020 May 19;10(2):309-319. Epub 2020 Mar 19.

8Department of Anatomical Sciences, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran.

In the present study, we fabricated vitamin D-loaded alginate hydrogel and assessed its wound healing capability in the animal model. The various concentrations of vitamin D3 were added to the pre-dissolved sodium alginate in deionized water and cross-linked by calcium carbonate in combination with d-glucono-δ-lactone. The microstructure, swelling behavior, weight loss, hemo- and cytocompatibility of the fabricated hydrogels were evaluated. Read More

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http://dx.doi.org/10.1007/s13534-020-00155-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235134PMC

A compressed-sensing-based compressor for ECG.

Biomed Eng Lett 2020 May 6;10(2):299-307. Epub 2020 Feb 6.

UNC Charlotte, Charlotte, NC USA.

Electrocardiogram (ECG) data compression has numerous applications. The time for generating compressed samples is a vital factor when we consider ambulatory devices, with the fact that data should be sent to the physician as soon as possible. In addition, there are some wearable ECG recorders that have limited power, and may only be capable of doing simple algorithms. Read More

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http://dx.doi.org/10.1007/s13534-020-00148-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235110PMC

Evaluation of multi-class support-vector machines strategies and kernel adjustment levels in hand posture recognition by analyzing sEMG signals acquired from a wearable device.

Biomed Eng Lett 2020 May 27;10(2):275-284. Epub 2019 Nov 27.

2Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), R. Pedro Vicente, 625 - Canindé, São Paulo, SP 01109-010 Brazil.

One-vs-One (OVO) and One-vs-All (OVA) are decomposition methods for multi-class strategies used to allow binary Support-Vector Machines (SVM) to transform a given k-class problem into pairwise small problems. In this context, the present work proposes the analysis of these two decomposition methods applied to the hand posture recognition problem in which the sEMG data of eight participants were collected by means of an 8-channel armband bracelet located on the forearm. Linear, Polynomial and Radial Basis Function kernels functions and its adjustments level were implemented combined to the strategies OVO and OVA to compare the performance of the SVM when mapping posture data into the classification spaces spanned by the studied kernels. Read More

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http://dx.doi.org/10.1007/s13534-019-00141-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235125PMC

Disease diagnostics using hydrodynamic flow focusing in microfluidic devices: Beyond flow cytometry.

Biomed Eng Lett 2020 May 3;10(2):241-257. Epub 2020 Jan 3.

Department of Mechanical Engineering, Birla Institute of Technology and Science, Pilani, K. K. Birla Goa Campus, Zuarinagar, Sancoale, Goa 403726 India.

The multi-disciplinary field of microfluidics has the potential to provide solutions to a diverse set of problems. It offers the advantages of high-throughput, continuous, rapid and expeditious analysis requiring minute quantities of sample. However, even as this field has yielded many mass-manufacturable and cost-efficient point-of-care devices, its direct and practical applications into the field of disease diagnostics still remain limited and largely overlooked by the industry. Read More

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http://dx.doi.org/10.1007/s13534-019-00144-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235123PMC

Multiclass covert speech classification using extreme learning machine.

Biomed Eng Lett 2020 May 3;10(2):217-226. Epub 2020 Mar 3.

Sardar Patel Institute of Technology, Andheri(W), Mumbai, India.

The objective of the proposed research is to classify electroencephalography (EEG) data of covert speech words. Six subjects were asked to perform covert speech tasks i.e mental repetition of four different words i. Read More

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http://dx.doi.org/10.1007/s13534-020-00152-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235109PMC

A CNN-LSTM neural network for recognition of puffing in smoking episodes using wearable sensors.

Biomed Eng Lett 2020 May 30;10(2):195-203. Epub 2020 Jan 30.

1Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487 USA.

A detailed assessment of smoking behavior under free-living conditions is a key challenge for health behavior research. A number of methods using wearable sensors and puff topography devices have been developed for smoking and individual puff detection. In this paper, we propose a novel algorithm for automatic detection of puffs in smoking episodes by using a combination of Respiratory Inductance Plethysmography and Inertial Measurement Unit sensors. Read More

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http://dx.doi.org/10.1007/s13534-020-00147-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235127PMC

Classification of atrial fibrillation and normal sinus rhythm based on convolutional neural network.

Biomed Eng Lett 2020 May 16;10(2):183-193. Epub 2020 Jan 16.

Department of Industrial Engineering and Management, National Chin-Yi University of Technology, Taichung, Taiwan.

Electrocardiogram (ECG) technology plays a vital role in detecting arrhythmia. Numerous achievements have been marked in ECG-related research. Most methods first pre-process ECG signals, then extract features, and finally classify them. Read More

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http://dx.doi.org/10.1007/s13534-020-00146-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7235126PMC

Correction to: A multiscale Mueller polarimetry module for a stereo zoom microscope.

Biomed Eng Lett 2020 Feb 2;10(1):181. Epub 2020 Jan 2.

1Department of Medical Biophysics, University of Toronto, Toronto, Canada.

[This corrects the article DOI: 10.1007/s13534-019-00116-w.]. Read More

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http://dx.doi.org/10.1007/s13534-019-00143-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046831PMC
February 2020

Diagnostic techniques for improved segmentation, feature extraction, and classification of malignant melanoma.

Biomed Eng Lett 2020 Feb 7;10(1):171-179. Epub 2019 Dec 7.

Department of Mathematics, Dongguk Univesity_Seoul, Seoul, 04620 Republic of Korea.

A typical diagnosis of malignant melanoma involves three major steps: segmentation of a lesion from the input color image, feature extraction from the separated lesion, and classification to distinguish malignant from benign melanomas based on features obtained. We suggest new methods for segmentation, feature extraction, and classification compared. We replaced edge-imfill method with U-Otsu method for segmentation, the previous features with new features for the criteria ABCD (asymmetry, border irregularity, color variegation, diameter) criteria, and the median thresholding with weighted receiver operating characteristic thresholding for classification. Read More

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http://dx.doi.org/10.1007/s13534-019-00142-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046850PMC
February 2020

Developing a wireless sensor network based on a proposed algorithm for healthcare purposes.

Biomed Eng Lett 2020 Feb 22;10(1):163-170. Epub 2019 Nov 22.

1MEMS and NEMS Laboratory, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.

This letter describes a developed wireless sensor network based on a proposed algorithm for monitoring the environmental parameters in healthcare intentions. This proposed algorithm contains a frame with different packets that are implemented on the developed wireless sensor network. The developed wireless sensor network consists of one central node as well as four sensor node that has been equipped with various sensors such as temperature, humidity, CO, CO, and passive infrared sensor. Read More

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http://dx.doi.org/10.1007/s13534-019-00140-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046911PMC
February 2020

Porous electrospun poly(ε-caprolactone)/gelatin nanofibrous mat containing cinnamon for wound healing application: in vitro and in vivo study.

Biomed Eng Lett 2020 Feb 18;10(1):149-161. Epub 2019 Nov 18.

1Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.

In this study, cinnamon (cin) was loaded into poly(ε-caprolactone)/gelatin (PCL/Gel) nanofibrous matrices in order to fabricate an appropriate mat to improve wound healing. Mats were fabricated from PCL/COLL [1:1 (w/w)] solution with 1, 5 and 25% (w/v) of cinnamon. Prepared mats were characterized with regard to their microstructure, mechanical properties, porosity, surface wettability, water-uptake capacity, water vapor permeability, blood compatibility, microbial penetration and cellular response. Read More

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http://dx.doi.org/10.1007/s13534-019-00138-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046867PMC
February 2020

Quantitative assessment of compress-type osseointegrated prosthetic implants in human bone using electromechanical impedance spectroscopic methods.

Biomed Eng Lett 2020 Feb 17;10(1):129-147. Epub 2019 Nov 17.

Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 48109 USA.

Osseointegrated (OI) prostheses are a promising alternative to traditional socket prostheses. They can enhance the quality of life of amputees by avoiding fit and comfort issues commonly associated with sockets. The main structural element of the OI prosthesis is a biocompatible metallic implant that is surgically implanted into the bone of the residual limb. Read More

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http://dx.doi.org/10.1007/s13534-019-00139-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046876PMC
February 2020

Advanced technologies for intuitive control and sensation of prosthetics.

Biomed Eng Lett 2020 Feb 8;10(1):119-128. Epub 2019 Aug 8.

6National Institute of Biomedical Imaging and Bioengineering, National Institute of Health, Bethesda, MD 20817 USA.

The Department of Defense, Department of Veterans Affairs and National Institutes of Health have invested significantly in advancing prosthetic technologies over the past 25 years, with the overall intent to improve the function, participation and quality of life of Service Members, Veterans, and all United States Citizens living with limb loss. These investments have contributed to substantial advancements in the control and sensory perception of prosthetic devices over the past decade. While control of motorized prosthetic devices through the use of electromyography has been widely available since the 1980s, this technology is not intuitive. Read More

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http://dx.doi.org/10.1007/s13534-019-00127-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046895PMC
February 2020

Sensing and actuation technologies for smart socket prostheses.

Biomed Eng Lett 2020 Feb 12;10(1):103-118. Epub 2019 Nov 12.

LIM Innovations, San Francisco, CA USA.

The socket is the most critical part of every lower-limb prosthetic system, since it serves as the interfacial component that connects the residual limb with the artificial system. However, many amputees abandon their socket prostheses due to the high-level of discomfort caused by the poor interaction between the socket and residual limb. In general, socket prosthesis performance is determined by three main factors, namely, residual limb-socket interfacial stress, volume fluctuation of the residual limb, and temperature. Read More

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http://dx.doi.org/10.1007/s13534-019-00137-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046914PMC
February 2020

A review on the latest advancements in the non-invasive evaluation/monitoring of dental and trans-femoral implants.

Biomed Eng Lett 2020 Feb 8;10(1):83-102. Epub 2019 Aug 8.

Department of Civil and Environmental Engineering, University of Pittsburgh, 729 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261 USA.

Dental implants and transcutaneous prostheses (trans-femoral implants) improve the quality of life of millions of people because they represent the optimal treatments to edentulism and amputation, respectively. The clinical procedures adopted by surgeons to insert these implants are well established. However, there is uncertainty on the outcomes of the post-operation recovery because of the uncertainty associated with the osseointegration process, which is defined as the direct, structural and functional contact between the living bone and the fixture. Read More

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http://dx.doi.org/10.1007/s13534-019-00126-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046827PMC
February 2020

Non-radiative healing assessment techniques for fractured long bones and osseointegrated implant.

Biomed Eng Lett 2020 Feb 26;10(1):63-81. Epub 2019 Jul 26.

1Department of Mechanical & Aerospace Engineering, Monash University, Wellington Rd, Clayton, VIC 3800 Australia.

The paper provides an overview of the fracture healing process of long bones, a review of work that proposed appropriate physical parameters for the assessment of healing and highlights some recent work that reported on the development of non-radiative technique for healing assessment. An overview of the development and monitoring of osseointegration for trans-femoral osseointegrated implant is also presented. The state of healing of a fractured long bone and the stability of osseointegrated implants can be seen as engineering structural components where the mechanical properties are restored to facilitate their desired function. Read More

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http://dx.doi.org/10.1007/s13534-019-00120-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046917PMC
February 2020

Review of functional materials for potential use as wearable infection sensors in limb prostheses.

Biomed Eng Lett 2020 Feb 3;10(1):43-61. Epub 2019 Oct 3.

Department of Mechanical Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand.

The fundamental goal of prosthesis is to achieve optimal levels of performance and enhance the quality of life of amputees. Socket type prostheses have been widely employed despite their known drawbacks. More recently, the advent of osseointegrated prostheses have demonstrated potential to be a better alternative to socket prosthesis eliminating most of the drawbacks of the latter. Read More

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http://dx.doi.org/10.1007/s13534-019-00132-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046883PMC
February 2020

Electrochemical methods to enhance osseointegrated prostheses.

Biomed Eng Lett 2020 Feb 19;10(1):17-41. Epub 2019 Nov 19.

1Department of Biomedical Engineering, University at Buffalo, 445 Biomedical Research Building, 3435 Main Street, Buffalo, NY 14214 USA.

Osseointegrated (OI) prosthetic limbs have been shown to provide an advantageous treatment option for amputees. In order for the OI prosthesis to be successful, the titanium implant must rapidly achieve and maintain proper integration with the bone tissue and remain free of infection. Electrochemical methods can be utilized to control and/or monitor the interfacial microenvironment where the titanium implant interacts with the biological system (host bone tissue or bacteria). Read More

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http://dx.doi.org/10.1007/s13534-019-00134-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046908PMC
February 2020

The state of the art of osseointegration for limb prosthesis.

Biomed Eng Lett 2020 Feb 11;10(1):5-16. Epub 2019 Nov 11.

Orthopaedics, USU-Walter Reed Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD USA.

Osseointegration (OI) is the direct attachment of bone onto a titanium implant. Recently, the term is used to describe "transdermal" implants that allow an external prosthesis to be connected directly to the skeleton. This technology eliminates the challenges of conventional socket-based prostheses, such as skin breakdown and poor fit, which are common in patients with major extremity amputations. Read More

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http://dx.doi.org/10.1007/s13534-019-00133-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046912PMC
February 2020

Special issue of biomedical engineering letters on advances in intelligent prostheses.

Biomed Eng Lett 2020 Feb 18;10(1):1-3. Epub 2020 Feb 18.

4University of California San Diego, La Jolla, CA USA.

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http://dx.doi.org/10.1007/s13534-020-00150-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046915PMC
February 2020

Electrochemical skin conductance is sensitive and has clinical utility in patients with untreated or poorly controlled diabetes.

Biomed Eng Lett 2019 Nov 29;9(4):507-508. Epub 2019 Aug 29.

Impeto Medical SAS, 17 Rue Campagne Première, 75014 Paris, France.

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http://dx.doi.org/10.1007/s13534-019-00131-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859133PMC
November 2019

FILM: finding the location of microaneurysms on the retina.

Authors:
Rohan R Akut

Biomed Eng Lett 2019 Nov 2;9(4):497-506. Epub 2019 Nov 2.

Department of Electronics and Telecommunication, MIT College of Engineering, Pune, India.

Diabetes retinopathy (DR) is one of the leading cause of blindness among people suffering from diabetes. It is a lesion based disease which starts off as small red spots on the retina. These small red lesions are known as microaneurysms (MA). Read More

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http://dx.doi.org/10.1007/s13534-019-00136-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859141PMC
November 2019

A novel pectoral muscle segmentation from scanned mammograms using EMO algorithm.

Biomed Eng Lett 2019 Nov 5;9(4):481-496. Epub 2019 Nov 5.

2Department of Electrical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667 India.

Mammogram images are majorly used for detecting the breast cancer. The level of positivity of breast cancer is detected after excluding the pectoral muscle from mammogram images. Hence, it is very significant to identify and segment the pectoral muscle from the mammographic images. Read More

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http://dx.doi.org/10.1007/s13534-019-00135-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859154PMC
November 2019

A compact-sized surface EMG sensor for myoelectric hand prosthesis.

Biomed Eng Lett 2019 Nov 26;9(4):467-479. Epub 2019 Aug 26.

School of Biomedical Engineering, Indian Institute of Technology (BHU), Varanasi, 221005 India.

Myoelectric prosthesis requires a sensor that can reliably capture surface electromyography (sEMG) signal from amputees for its controlled operation. The main problems with the presently available EMG devices are their extremely high cost, large response time, noise susceptibility, less amplitude sensitivity, and larger size. This paper proposes a compact and affordable EMG sensor for the prosthetic application. Read More

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http://dx.doi.org/10.1007/s13534-019-00130-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859146PMC
November 2019

Tomographic density imaging using modified DF-DBIM approach.

Biomed Eng Lett 2019 Nov 20;9(4):449-465. Epub 2019 Aug 20.

Faculty of Electrical and Electronic Engineering, Phenikaa University, Hanoi, 12116 Vietnam.

Ultrasonic computed tomography based on back scattering theory is the most powerful and accurate tool in ultrasound based imaging approaches because it is capable of providing quantitative information about the imaged target and detects very small targets. The duple-frequency distorted Born iterative method (DF-DBIM), which uses density information along with sound contrast for imaging, is a promising approach for imaging targets at the level of biological tissues. With two frequencies f (low) and f (high) through and iterations respectively, this method is used to estimate target density along with sound contrast. Read More

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http://dx.doi.org/10.1007/s13534-019-00129-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859138PMC
November 2019

Shape memory alloy actuation of non-bonded piezo sensor configuration for bone diagnosis and impedance based analysis.

Biomed Eng Lett 2019 Nov 10;9(4):435-447. Epub 2019 Aug 10.

2Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016 India.

In the recent years, there has been a growing interest in research community towards the application of smart materials for bio-medical structural health monitoring. Amongst the smart materials, directly bonded piezo sensors (DBPS), based on the electro-mechanical impedance (EMI) technique, have been successfully employed for the above purpose. The principle behind the EMI technique is that high frequency excitations (typically > 30 kHz) generated by a surface bonded PZT patch are used to detect changes in structural drive point impedance caused by cracks or any other type of damage. Read More

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http://dx.doi.org/10.1007/s13534-019-00128-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859171PMC
November 2019

A physiology based model of heart rate variability.

Biomed Eng Lett 2019 Nov 19;9(4):425-434. Epub 2019 Aug 19.

1Department of Electrical and Electronic Engineering, Imperial College London, Exhibition Road, London, SW7 2AZ UK.

Heart rate variability (HRV) is governed by the autonomic nervous system (ANS) and is routinely used to estimate the state of body and mind. At the same time, recorded HRV features can vary substantially between people. A model for HRV that (1) correctly simulates observed HRV, (2) reliably functions for multiple scenarios, and (3) can be personalised using a manageable set of parameters, would be a significant step forward toward understanding individual responses to external influences, such as physical and physiological stress. Read More

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http://dx.doi.org/10.1007/s13534-019-00124-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859176PMC
November 2019

A hybrid method for fundamental heart sound segmentation using group-sparsity denoising and variational mode decomposition.

Biomed Eng Lett 2019 Nov 26;9(4):413-424. Epub 2019 Jul 26.

Centre for Computational Engineering and Networking (CEN), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India.

Segmentation of fundamental heart sounds-S1 and S2 is important for automated monitoring of cardiac activity including diagnosis of the heart diseases. This pa-per proposes a novel hybrid method for S1 and S2 heart sound segmentation using group sparsity denoising and variation mode decomposition (VMD) technique. In the proposed method, the measured phonocardiogram (PCG) signals are denoised using group sparsity algorithm by exploiting the group sparse (GS) property of PCG signals. Read More

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http://dx.doi.org/10.1007/s13534-019-00121-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6859152PMC
November 2019

Time-frequency localization using three-tap biorthogonal wavelet filter bank for electrocardiogram compressions.

Biomed Eng Lett 2019 Aug 28;9(3):407-411. Epub 2019 Jun 28.

Department of Electronics and Communication Engineering, Bennett University, Greater Noida, U. P. 210310 India.

A joint time-frequency localized three-band biorthogonal wavelet filter bank to compress Electrocardiogram signals is proposed in this work. Further, the use of adaptive thresholding and modified run-length encoding resulted in maximum data volume reduction while guaranteeing reconstructing quality. Using signal-to-noise ratio, compression ratio (C), maximum absolute error (E), quality score (Q), root mean square error, compression time (C) and percentage root mean square difference the validity of the proposed approach is studied. Read More

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http://dx.doi.org/10.1007/s13534-019-00117-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694361PMC

A new approach for blood pressure estimation based on phonocardiogram.

Biomed Eng Lett 2019 Aug 7;9(3):395-406. Epub 2019 Jun 7.

2Department of Biomedical Engineering, Tlemcen university, 13000 Tlemcen, Algeria.

Continuous and non-invasive measurement of blood pressure (BP) is of great importance particularly for patients in critical state. To achieve continuous and cuffless BP monitoring, pulse transit time (PTT) has been reported as a potential parameter. Nevertheless, this approach remains very sensitive, cumbersome and disagreeable in ambulatory measurement. Read More

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http://dx.doi.org/10.1007/s13534-019-00113-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694334PMC

Content based medical image retrieval based on new efficient local neighborhood wavelet feature descriptor.

Biomed Eng Lett 2019 Aug 6;9(3):387-394. Epub 2019 May 6.

1Instrumentation and Control, College of Engineering Pune, Pune, India.

This paper presents a new class of local neighborhood based wavelet feature descriptor (LNWFD) for content based medical image retrieval (CBMIR). To retrieve images effectively from large medical databases is backbone of diagnosis. Existing wavelet transform based medical image retrieval methods suffer from high length feature vector with confined retrieval performance. Read More

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http://dx.doi.org/10.1007/s13534-019-00112-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694329PMC
August 2019
2 Reads

U-net based metal segmentation on projection domain for metal artifact reduction in dental CT.

Biomed Eng Lett 2019 Aug 29;9(3):375-385. Epub 2019 Apr 29.

Department of Biomedical Engineering, Kyung Hee University, Yongin, Korea.

Unlike medical computed tomography (CT), dental CT often suffers from severe metal artifacts stemming from high-density materials employed for dental prostheses. Despite the many metal artifact reduction (MAR) methods available for medical CT, those methods do not sufficiently reduce metal artifacts in dental CT images because MAR performance is often compromised by the enamel layer of teeth, whose X-ray attenuation coefficient is not so different from that of prosthetic materials. We propose a deep learning-based metal segmentation method on the projection domain to improve MAR performance in dental CT. Read More

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http://dx.doi.org/10.1007/s13534-019-00110-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694350PMC

Proposal of conditional random inter-stimulus interval method for unconstrained enclosure based GPIAS measurement systems.

Biomed Eng Lett 2019 Aug 10;9(3):367-374. Epub 2019 May 10.

Department of Biomedical Engineering, College of Medicine, Dankook University, Cheonan, Korea.

Gap prepulse inhibition of acoustic startle (GPIAS) method has been used effectively for the objective assessment of tinnitus in animals. Among two types of enclosures for the GPIAS, the unconstrained type carries less risk of animal death due to the absence of binding stress in the enclosure, and lack of need for alteration to animal size variation as it grows. However, animals' voluntary movements, which have no relation to the startles evoked by acoustic stimuli, are problematic, as they cannot be excluded in the case of the unconstrained enclosure based GPIAS measurement system. Read More

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http://dx.doi.org/10.1007/s13534-019-00109-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694327PMC

Photobiomodulation as a treatment for neurodegenerative disorders: current and future trends.

Authors:
Namgue Hong

Biomed Eng Lett 2019 Aug 12;9(3):359-366. Epub 2019 Jun 12.

Department of Pre-medical Science, College of Medicine, Dankook University, Cheonan, 31116 Republic of Korea.

Photobiomodulation (PBM) is a rapidly growing as an innovative therapeutic modality for various types of diseases in recent years. Neuronal degeneration is irreversible process and it is proven to be difficult to slow down or stop the progression. Pharmacologic approaches to slow neuronal degeneration have been studied, but are limited due to concerns about the side effects. Read More

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http://dx.doi.org/10.1007/s13534-019-00115-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694374PMC
August 2019
1 Read

Applications of photobiomodulation in hearing research: from bench to clinic.

Biomed Eng Lett 2019 Aug 18;9(3):351-358. Epub 2019 Jun 18.

1Interdisciplinary Program for Medical Laser, Dankook University, Cheonan, South Korea.

Hearing loss is very common and economically burdensome. No accepted therapeutic modality for sensorineural hearing loss is yet available; most clinicians emphasize rehabilitation, placing hearing aids and cochlear implants. Photobiomodulation (PBM) employs light energy to enhance or modulate the activities of specific organs, and is a popular non-invasive therapy used to treat skin lesions and neurodegenerative disorders. Read More

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http://dx.doi.org/10.1007/s13534-019-00114-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694351PMC
August 2019
4 Reads

A multiscale Mueller polarimetry module for a stereo zoom microscope.

Biomed Eng Lett 2019 Aug 20;9(3):339-349. Epub 2019 Jun 20.

1Department of Medical Biophysics, University of Toronto, Toronto, Canada.

Mueller polarimetry is a quantitative polarized light imaging modality that is capable of label-free visualization of tissue pathology, does not require extensive sample preparation, and is suitable for wide-field tissue analysis. It holds promise for selected applications in biomedicine, but polarimetry systems are often constrained by limited end-user accessibility and/or long-imaging times. In order to address these needs, we designed a multiscale-polarimetry module that easily couples to a commercially available stereo zoom microscope. Read More

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http://dx.doi.org/10.1007/s13534-019-00116-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694365PMC
August 2019
1 Read

Advances in the simulation of light-tissue interactions in biomedical engineering.

Biomed Eng Lett 2019 Aug 25;9(3):327-337. Epub 2019 Jul 25.

Hannover Centre for Optical Technologies, Nienburger Straße 17, 30167 Hannover, Germany.

Monte Carlo (MC) simulation for light propagation in scattering and absorbing media is the gold standard for studying the interaction of light with biological tissue and has been used for years in a wide variety of cases. The interaction of photons with the medium is simulated based on its optical properties and the original approximation of the scattering phase function. Over the past decade, with the new measurement geometries and recording techniques invented also the corresponding sophisticated methods for the description of the underlying light-tissue interaction taking into account realistic parameters and settings were developed. Read More

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http://dx.doi.org/10.1007/s13534-019-00123-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694345PMC
August 2019
1 Read

Optical coherence tomography angiography in preclinical neuroimaging.

Authors:
Woo June Choi

Biomed Eng Lett 2019 Aug 2;9(3):311-325. Epub 2019 Jul 2.

School of Electrical and Electronics Engineering, College of ICT Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974 Republic of Korea.

Preclinical neuroimaging allows for the assessment of brain anatomy, connectivity, and function in laboratory animals, such as mice and this imaging field has been a rapidly growing aimed at bridging the translation gap between animal and human research. The progress in the animal research could be accelerated by high-resolution in vivo optical imaging technologies. Optical coherence tomography-based angiography (OCTA) estimates the scattering from moving red blood cells, providing the visualization of functional micro-vessel networks within tissue beds in vivo without a need for exogenous contrast agents. Read More

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http://dx.doi.org/10.1007/s13534-019-00118-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694380PMC

Recent trends in two-photon auto-fluorescence lifetime imaging (2P-FLIM) and its biomedical applications.

Biomed Eng Lett 2019 Aug 1;9(3):293-310. Epub 2019 Jul 1.

Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104 India.

Two photon fluorescence microscopy and the numerous technical advances to it have served as valuable tools in biomedical research. The fluorophores (exogenous or endogenous) absorb light and emit lower energy photons than the absorption energy and the emission (fluorescence) signal is measured using a fluorescence decay graph. Additionally, high spatial resolution images can be acquired in two photon fluorescence lifetime imaging (2P-FLIM) with improved penetration depth which helps in detection of fluorescence signal in vivo. Read More

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http://dx.doi.org/10.1007/s13534-019-00119-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694381PMC

Light sheet microscopy for histopathology applications.

Biomed Eng Lett 2019 Aug 24;9(3):279-291. Epub 2019 Jul 24.

1Department of Biomedical Science and Engineering (BMSE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005 Republic of Korea.

Light sheet microscopy (LSM) is an evolving optical imaging technique with a plane illumination for optical sectioning and volumetric imaging spanning cell biology, embryology, and in vivo live imaging. Here, we focus on emerging biomedical applications of LSM for tissue samples. Decoupling of the light sheet illumination from detection enables high-speed and large field-of-view imaging with minimal photobleaching and phototoxicity. Read More

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http://dx.doi.org/10.1007/s13534-019-00122-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694372PMC

Photon mayhem: new directions in diagnostic and therapeutic photomedicine.

Biomed Eng Lett 2019 Aug 5;9(3):275-277. Epub 2019 Aug 5.

4Departments of Medical Biophysics, University of Toronto, Toronto, ON Canada.

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http://dx.doi.org/10.1007/s13534-019-00125-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694341PMC

Variability of electrochemical skin conductance for screening diabetes mellitus.

Biomed Eng Lett 2019 May 24;9(2):267-274. Epub 2019 Apr 24.

2Future Medicine Division, Korea Institute of Oriental Medicine, Daejeon, South Korea.

Electrochemical skin conductance (ESC) has been suggested as a noninvasive diabetic screening tool. We examined the relevance of ESC method for screening type 2 diabetes. A meal tolerance test (MTT) was conducted for 40 diabetic and 42 control subjects stratified by age, sex and body mass index (BMI). Read More

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http://dx.doi.org/10.1007/s13534-019-00111-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520414PMC
May 2019
12 Reads

Sleep stage estimation method using a camera for home use.

Biomed Eng Lett 2019 May 24;9(2):257-265. Epub 2019 Apr 24.

4Ritsumeikan University, College of Science Engineering, 1-1-1, Noji-higashi, Kusatsu, Shiga 525-8577 Japan.

Recent studies have developed simple techniques for monitoring and assessing sleep. However, several issues remain to be solved for example high-cost sensor and algorithm as a home-use device. In this study, we aimed to develop an inexpensive and simple sleep monitoring system using a camera and video processing. Read More

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http://dx.doi.org/10.1007/s13534-019-00108-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520421PMC
May 2019
3 Reads

Development of an Al-load-cell-based wireless ringer's solution monitoring and alarm system: insight into vibrational error correction.

Biomed Eng Lett 2019 May 29;9(2):245-255. Epub 2019 Mar 29.

Department of Applied Chemistry, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi, Gyeongbuk 39177 Republic of Korea.

In this study, we developed an aluminum-load-cell-based wireless Ringer's solution monitoring and alarm (WRMA) system. The Al load cell was designed with a rectangular shape, and the load was concentrated in the lower beam part of the load cell because of the anisotropic thickness. From the static analysis, we identified the appropriate location for a Wheatstone bridge circuit consisting of four strain gauges. Read More

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http://dx.doi.org/10.1007/s13534-019-00107-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520426PMC
May 2019
8 Reads

An inversion of the conical Radon transform arising in the Compton camera with helical movement.

Authors:
Kiwoon Kwon

Biomed Eng Lett 2019 May 21;9(2):233-243. Epub 2019 Mar 21.

Department of Mathematics, Dongguk University Seoul, Seoul, 04620 Republic of Korea.

Since the Compton camera was first introduced, various types of conical Radon transforms have been examined. Here, we derive the inversion formula for the conical Radon transform, where the cone of integration moves along a curve in three-dimensional space such as a helix. Along this three-dimensional curve, a detailed inversion formula for helical movement will be treated for Compton imaging in this paper. Read More

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http://dx.doi.org/10.1007/s13534-019-00106-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520434PMC
May 2019
1 Read

Multi class disorder detection of magnetic resonance brain images using composite features and neural network.

Biomed Eng Lett 2019 May 4;9(2):221-231. Epub 2019 Mar 4.

Department of Instrumentation Engineering, SGGS Institute of Engineering and Technology, Nanded, Maharashtra 431606 India.

Brain disorder recognition has becoming a promising area of study. In reality, some disorders share similar features and signs, making the task of diagnosis and treatment challenging. This paper presents a rigorous and robust computer aided diagnosis system for the detection of multiple brain abnormalities which can assist physicians in the diagnosis and treatment of brain diseases. Read More

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http://dx.doi.org/10.1007/s13534-019-00103-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520435PMC
May 2019
11 Reads

Potentials of Smart dynamometer use for clinical and self-management of rehabilitation in breast cancer survivors: a feasibility study.

Biomed Eng Lett 2019 May 13;9(2):211-219. Epub 2019 Feb 13.

2Department of Rehabilitation Medicine, Seoul National University Bundang Hospital, 173, Gumi-ro, Bundang-gu, Seongnam-si, 13620 Republic of Korea.

The aim of this study was to examine the feasibility of the Smart dynamometer as a rehabilitation exercise device in a daily care by comparing with the existing medical devices. We used and analyzed clinical and measurement data of breast cancer survivors who have used Smart dynamometer during their rehabilitation after breast cancer surgery. The Smart dynamometer was compared with the two existing devices of Takei dynamometer and surface electromyography (sEMG) that were used in routine care, respectively. Read More

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http://dx.doi.org/10.1007/s13534-019-00101-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520418PMC
May 2019
5 Reads

Finite element analysis of cornea deformation and curvature change during the keratoplasty suturing process.

Biomed Eng Lett 2019 May 23;9(2):203-209. Epub 2019 Jan 23.

Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Cheongam-ro, Nam-Gu, Pohang, Gyeongbuk 37673 Korea.

Keratoplasty, which is cornea transplant surgery, is one of the treatment methods for patients with turbidity or keratitis. Recently, keratoplasty using a surgical robot was studied to increase precision. In this study, the effect of surgical factors on the deformation and curvature of the cornea were analyzed in order to improve the accuracy of keratoplasty and derive the optimal surgical factors using finite element method (FEM). Read More

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http://dx.doi.org/10.1007/s13534-019-00100-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520425PMC

Constitutive law of healthy gallbladder walls in passive state with damage effect.

Authors:
Wenguang Li

Biomed Eng Lett 2019 May 6;9(2):189-201. Epub 2019 Feb 6.

School of Mathematics and Statistics, University of Glasgow, Glasgow, G12, 8QQ UK.

Biomechanical properties of human gallbladder (GB) wall in passive state can be valuable to diagnosis of GB diseases. In the article, an approach for identifying damage effect in GB walls during uniaxial tensile test was proposed and a strain energy function with the damage effect was devised as a constitutive law phenomenologically. Scalar damage variables were introduced respectively into the matrix and two families of fibres to assess the damage degree in GB walls. Read More

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http://dx.doi.org/10.1007/s13534-019-00098-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520496PMC
May 2019
11 Reads