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Journals Journal of Medical Engineering...

Journal of Medical Engineering & Technology

https://read.qxmd.com/read/32762585/three-dimensional-finite-element-modelling-of-metatarsal-stresses-during-running
#1
M A Ellison, M Akrami, J Fulford, A A Javadi, H M Rice
Second metatarsal stress fractures are a problematic injury for runners and are formed when the rate of repair of bone is outpaced by the damage accumulated during loading. Measuring the peak stresses on the bone during running gives an indication of damage accumulation but direct measurement is invasive. Finite element modelling is a viable alternative method of accurately estimating bone stresses but tends to be too computationally expensive for use in applied research. This study presents a novel and simple finite element model which can estimate bone stresses on the second metatarsal during the stance phase of walking and running, accounting for joint reaction forces and soft tissue effects...
August 7, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32762571/wrinkle-induced-tear-in-the-mitral-valve-leaflet-tissue-a-computational-model
#2
Dylan Goode, Emre Kermen, Hadi Mohammadi
In this study, we offer a numerical platform to detect the locations of high-stress zones in the prosthetic heart valve, in the mitral position, during the closing phase due to existing wrinkles. The intended prosthetic valves in this study have the same shape as the native mitral valve but made of synthetic biomaterials. We assume the most high-risk locations for ruptures to either initiate or propagate are at the base of existing wrinkles. We developed a finite element model for the human mitral valve. A mesh model was effectively created to account for the uneven stress distribution and high-stress concentration zones in the valve tissue structure...
August 7, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32757800/spectral-trimming-technique-a-new-approach-for-suppressing-motion-artefacts-in-stress-electrocardiography
#3
A S Lakhe, R K Jain, Vineet Sinha, T S Anantkrishnan, P P Athavale, Bhaimangesh Naik, G D Jindal
Motion artefacts in electrocardiographic (ECG) signal are suppressed mainly by adaptive noise cancellation and wavelet denoising. While the former requires a motion sensor in addition to ECG electrodes, the latter removes some of the desired low-frequency components in the signal. In this paper spectral trimming technique is being introduced for suppressing the motion artefacts in stress electrocardiography. In this method, Fourier spectral coefficients up to 1.221 Hz of noisy signal are trimmed on the basis of template derived from resting ECG signal in the same subject...
August 6, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32729351/a-review-of-current-use-of-commercial-wearable-technology-and-smartphone-apps-with-application-in-monitoring-individuals-following-total-hip-replacement-surgery
#4
Shayan Bahadori, Sarah Collard, Jonathan Mark Williams, Ian Swain
The advent of commercially available wearable activity monitors and smartphone apps allows objective digital monitoring of daily activities of patients before and after THR surgery. A wide variety of wearable activity monitors and smartphone apps are being marketed to assist with enhancing physical activity following surgery. A systematic review of commercial wearable technology and smartphone apps was undertaken to assess the evidence supporting their efficacy in assisting rehabilitation and patient monitoring following THR...
July 30, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32729345/analysis-on-diagnosing-diabetic-retinopathy-by-segmenting-blood-vessels-optic-disc-and-retinal-abnormalities
#5
Ambaji S Jadhav, Pushpa B Patil, Sunil Biradar
The main intention of mass screening programmes for Diabetic Retinopathy (DR) is to detect and diagnose the disorder earlier than it leads to vision loss. Automated analysis of retinal images has the likelihood to improve the efficacy of screening programmes when compared over the manual image analysis. This article plans to develop a framework for the detection of DR from the retinal fundus images using three evaluations based on optic disc, blood vessels and retinal abnormalities. Initially, the pre-processing steps like green channel conversion and Contrast Limited Adaptive Histogram Equalisation is done...
July 30, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32716230/why-the-mask-the-effectiveness-of-face-masks-in-preventing-the-spread-of-respiratory-infections-such-as-covid-19-a-home-testing-protocol
#6
Ian D Swain
Since the start of the COVID-19 pandemic there has been much debate in the media on whether masks should be worn to stop the spread of the virus. There are two ways in which they could work. Firstly, to protect the person wearing the mask, and secondly, to reduce the likelihood of the person wearing the mask passing the disease on to anyone else. This is not an easy issue to address and many factors come into play such as droplet size, aerosol transmission and the viral load, as well as the specific properties of any given mask...
July 27, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32700982/a-multimodal-mr-compatible-olfactometer-with-real-time-controlling-capability
#7
Seyedeh Fahimeh Hosseini, Seyed Kamran Kamrava, Somayeh Asadi, Shayan Maleki, Arash Zare-Sadeghi, Ali Shakeri-Zadeh
Design of an MR-compatible and computer-controlled odour stimuli system is essential in the studies of human olfactory function. Olfactometers are used to deliver odours to the subjects in an objective manner. We present a portable, computer-controlled eight channels olfactometer able to stimulate olfaction by employing liquid odorant stimuli. We used a high-pressure pump to generate medical grade airflow. After passing through solenoid valve-controlled odour reservoirs, odorant stimulus is conveyed to the nasal mask...
July 23, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32589070/surface-tension-measurement-of-normal-human-blood-samples-by-pendant-drop-method
#8
Siddharth Singh Yadav, Basant Singh Sikarwar, Priya Ranjan, Rajiv Janardhanan, Ayush Goyal
The surface tension of blood plays an important role not only in the birth and decompression sickness but also in other functionality of the organism. It also provides capillary action during blood flow process. In this article, a simple and low-cost device is designed and fabricated for measuring the surface tension of blood by pendant drop method. In this device, a droplet of blood is formed in a closed chamber on tip of an 18-gauge blunt needle and it is photographed by a camera in very humid conditions (RH = 99%) to minimise the evaporation...
June 26, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32589065/objective-stress-monitoring-based-on-wearable-sensors-in-everyday-settings
#9
Hee Jeong Han, Sina Labbaf, Jessica L Borelli, Nikil Dutt, Amir M Rahmani
Monitoring people's stress levels has become an essential part of behavioural studies for physical and mental illnesses conducted within the biopsychosocial framework. There have been several stress assessment studies in laboratory-based controlled settings. However, the results of these studies do not always translate effectively to an everyday context. The current state of wearable sensor technology allows us to develop systems measuring the physiological signals reflecting stress 24/7 while capturing the context...
June 26, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32573306/hand-tremor-suppression-device-for-patients-suffering-from-parkinson-s-disease
#10
Mohammad Shah Faizan, Mohammad Muzammil
In this study, a wearable device is developed as a mechanical treatment to suppress hand tremors in people with Parkinson's disease (PwPD). The biodynamic modelling of the human hand was done by considering the hand as a primary mass-spring-damper system. Dual passive vibration absorbers have been designed to match the frequencies of tremors. The performance assessment of the device was performed using the temporal response of hand tremors. The results showed that the device reduced the amplitude of the angular movement of the wrist by 57...
June 23, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32573288/a-review-of-haptic-feedback-in-tele-operated-robotic-surgery
#11
Issam El Rassi, Jean-Michel El Rassi
During traditional surgery, the surgeons' hands are in direct contact with organs, and surgeons rely on the sense of touch to perform surgery. In teleoperated robotic systems, all physical connections between the surgeon and both the robot and patient, are absent. The surgeon must estimate the force exerted on organs, based only on visual deformation of tissues he is pulling, pushing, gripping, or suturing. It is hard to imagine how to operate with no haptic sensations, and it is surprising that commercially available robots didn't include until now any Haptic Feedback, despite reports about tissue injury, and inability to perform complex manipulation...
June 23, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32558604/correction
#12
(no author information available yet)
No abstract text is available yet for this article.
June 19, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32552206/tumour-collection-chamber-for-space-occupying-lesions-in-neurosurgery
#13
Deepak Kumar Jha, Om P Thakur
Collection of tissue sample is one of the most important step in neurosurgery while removing intracranial or intraspinal space occupying lesions (SOL). It is required for tissue diagnosis, further treatment planning and prognostication. There is no mention of any tool except taking pieces using various biopsy/holding forceps or curettes. Author has designed a prototype of a tumour collection chamber (TCC), which is connected to the suction tubing for collection of solid tumours during surgical removal by suction by selectively allowing the suction flow through the TCC...
June 18, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32544347/study-of-hot-stress-dynamic-ir-thermography-for-detecting-surface-cancerous-tissue
#14
Uddip Kashyap, Subhasish Sarkar, Sandip K Saha
The early diagnosis of cancer at any location of the human body can help in enhancing the survival rate and in reducing the cost of the treatment. Among the several techniques, the conventional infra-red (IR) thermography suffers from several limitations, including higher patient discomfort and longer time for tumour detection based on the temperature difference between tumour and adjacent healthy tissues. Hence, in this work, a novel non-invasive hot stress dynamic IR thermography system is proposed to detect surface tumour without severe discomfort to the patient...
June 16, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32500765/biomedical-invasive-pressure-sensor-coatings-calibration-and-waveform-perspectives
#15
Q Qananwah, W Al-Zyoud, A Al-Zaben
The biocompatibility of invasive biomedical sensors is a fundamental issue in the design of implanted sensors. Therefore, the unique packaging of the sensor is a crucial design procedure that must be performed and evaluated correctly. Under steady-state measurements, the sensor calibration can be done quickly, and the corresponding errors and loss in the sensor's sensitivity, because of the packaging material, can be compensated easily. This paper investigates the effect of the presence and absence of biocompatible silicone paste as packaging material on the catheter sensor's output waveform morphology, and the sensor's response time under dynamic measurements...
June 5, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32498594/big-data-analytics-in-medical-engineering-and-healthcare-methods-advances-and-challenges
#16
Lidong Wang, Cheryl Ann Alexander
Big data analytics are gaining popularity in medical engineering and healthcare use cases. Stakeholders are finding big data analytics reduce medical costs and personalise medical services for each individual patient. Big data analytics can be used in large-scale genetics studies, public health, personalised and precision medicine, new drug development, etc. The introduction of the types, sources, and features of big data in healthcare as well as the applications and benefits of big data and big data analytics in healthcare is key to understanding healthcare big data and will be discussed in this article...
June 5, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32420771/kinect-v2-based-system-for-gait-assessment-of-children-with-cerebral-palsy-in-rehabilitation-settings
#17
Caue Conterno Barreira, Arturo Forner-Cordero, Patricia Moreno Grangeiro, Rafael Traldi Moura
Cerebral palsy (CP) describes a group of disorders of movement, posture and balance caused by a non-progressive brain injury in the immature brain. It is the most prevalent cause of chronic motor disability in childhood, and although two thirds of CP children are able to walk, they show gait limitations. In this context, rehabilitation therapy can improve muscle balance and gait. Previous studies showed the importance of gait analysis as part of multidisciplinary tools for effective rehabilitation treatment...
May 18, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32420766/modified-fmcw-system-for-non-contact-sensing-of-human-respiration
#18
Aloysius Adya Pramudita, Fiky Y Suratman, Dharu Arseno
Small displacement detection capability becomes an important key for developing non-contact sensor for human respiration based on radar system. Frequency modulated continuous wave (FMCW) radar has been widely studied and applied for many applications. With respect to the conventional perspective, large bandwidth is needed for detecting the small displacement related to the human respiration. Meanwhile, extracting the respiration pattern from Doppler response has a drawback in identifying the small displacement location...
May 18, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32657668/review-of-pulmonary-emboli-and-techniques-for-their-mechanical-removal-to-inform-device-design
#19
Jessica Brand, Roger McGowan, Amit Nimunkar
Pulmonary emboli present a significant burden of disease, with limited treatment options for some patients. Mechanical devices for pulmonary emboli removal are becoming increasingly prevalent though more work remains to be done. This paper briefly discusses the mechanical properties of pulmonary emboli, the disease state they cause, and the existing embolectomy devices. The goal of this paper is to aid the design of minimally invasive mechanical pulmonary emboli removal devices, by providing a review of this topic as well as some key design specifications...
July 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32657667/automated-human-mind-reading-using-eeg-signals-for-seizure-detection
#20
Virender Ranga, Shivam Gupta, Jyoti Meena, Priyansh Agrawal
Epilepsy is one of the most occurring neurological disease globally emerged back in 4000 BC. It is affecting around 50 million people of all ages these days. The trait of this disease is recurrent seizures. In the past few decades, the treatments available for seizure control have improved a lot with the advancements in the field of medical science and technology. Electroencephalogram (EEG) is a widely used technique for monitoring the brain activity and widely popular for seizure region detection. It is performed before surgery and also to predict seizure at the time operation which is useful in neuro stimulation device...
July 2020: Journal of Medical Engineering & Technology
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