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Journal of Healthcare Engineering

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https://www.readbyqxmd.com/read/30538810/wireless-patrol-sign-in-system-with-mental-fatigue-detection
#1
Kang-Ming Chang, Hao-Chen Xu, Congo Tak-Shing Ching, Shing-Hong Liu
Current sign-in methods of patrolling security guards mainly comprise signature, image identification, and fingerprint identification; notably, none of these methods indicate the physical and mental conditions of such guards. In particular, when patrolling security guards perform their duties consecutively for a long period of time, adequate attention should be directed toward their levels of mental fatigue. When a handwriting sign-in system is adopted, security guards may not record their sign-in time accurately, or they may fake signatures during long shifts...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30538809/influence-of-nanofiber-orientation-on-morphological-and-mechanical-properties-of-electrospun-chitosan-mats
#2
Paola Nitti, Nunzia Gallo, Lara Natta, Francesca Scalera, Barbara Palazzo, Alessandro Sannino, Francesca Gervaso
This work explored the use of chitosan (Cs) and poly(ethylene oxide) (PEO) blends for the fabrication of electrospun fiber-orientated meshes potentially suitable for engineering fiber-reinforced soft tissues such as tendons, ligaments, or meniscus. To mimic the fiber alignment present in native tissue, the CS/PEO blend solution was electrospun using a traditional static plate, a rotating drum collector, and a rotating disk collector to get, respectively, random, parallel, circumferential-oriented fibers. The effects of the different orientations (parallel or circumferential) and high-speed rotating collector influenced fiber morphology, leading to a reduction in nanofiber diameters and an improvement in mechanical properties...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30538808/digital-design-of-medical-replicas-via-desktop-systems-shape-evaluation-of-colon-parts
#3
Michele Bici, Valerio Cardini, Marco Eugeni, Robinson Guachi, Fabiano Bini, Francesca Campana, Franco Marinozzi, Paolo Gaudenzi
In this paper, we aim at providing results concerning the application of desktop systems for rapid prototyping of medical replicas that involve complex shapes, as, for example, folds of a colon. Medical replicas may assist preoperative planning or tutoring in surgery to better understand the interaction among pathology and organs. Major goals of the paper concern with guiding the digital design workflow of the replicas and understanding their final performance, according to the requirements asked by the medics (shape accuracy, capability of seeing both inner and outer details, and support and possible interfacing with other organs)...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30515286/a-computer-aided-pipeline-for-automatic-lung-cancer-classification-on-computed-tomography-scans
#4
Emre Dandıl
Lung cancer is one of the most common cancer types. For the survival of the patient, early detection of lung cancer with the best treatment method is crucial. In this study, we propose a novel computer-aided pipeline on computed tomography (CT) scans for early diagnosis of lung cancer thanks to the classification of benign and malignant nodules. The proposed pipeline is composed of four stages. In preprocessing steps, CT images are enhanced, and lung volumes are extracted from the image with the help of a novel method called lung volume extraction method (LUVEM)...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30515285/computation-methods-for-biomedical-information-analysis
#5
EDITORIAL
Yong Xia, Weidong Cai, Xiaofeng Yang, Shanshan Wang
No abstract text is available yet for this article.
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30515284/how-to-build-a-patient-specific-hybrid-simulator-for-orthopaedic-open-surgery-benefits-and-limits-of-mixed-reality-using-the-microsoft-hololens
#6
Sara Condino, Giuseppe Turini, Paolo D Parchi, Rosanna M Viglialoro, Nicola Piolanti, Marco Gesi, Mauro Ferrari, Vincenzo Ferrari
Orthopaedic simulators are popular in innovative surgical training programs, where trainees gain procedural experience in a safe and controlled environment. Recent studies suggest that an ideal simulator should combine haptic, visual, and audio technology to create an immersive training environment. This article explores the potentialities of mixed-reality using the HoloLens to develop a hybrid training system for orthopaedic open surgery. Hip arthroplasty, one of the most common orthopaedic procedures, was chosen as a benchmark to evaluate the proposed system...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30510672/facial-pain-expression-recognition-in-real-time-videos
#7
Pranti Dutta, Nachamai M
Recognition of pain in patients who are incapable of expressing themselves allows for several possibilities of improved diagnosis and treatment. Despite the advancements that have already been made in this field, research is still lacking with respect to the detection of pain in live videos, especially under unfavourable conditions. To address this gap in existing research, the current study proposed a hybrid model that allowed for efficient pain recognition. The hybrid, which consisted of a combination of the Constrained Local Model (CLM), Active Appearance Model (AAM), and Patch-Based Model, was applied in conjunction with image algebra...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30510671/pixel-label-based-segmentation-of-cross-sectional-brain-mri-using-simplified-segnet-architecture-based-cnn
#8
Bijen Khagi, Goo-Rak Kwon
Using deep neural networks for segmenting an MRI image of heterogeneously distributed pixels into a specific class assigning a label to each pixel is the concept of the proposed approach. This approach facilitates the application of the segmentation process on a preprocessed MRI image, with a trained network to be utilized for other test images. As labels are considered expensive assets in supervised training, fewer training images and training labels are used to obtain optimal accuracy. To validate the performance of the proposed approach, an experiment is conducted on other test images (available in the same database) that are not part of the training; the obtained result is of good visual quality in terms of segmentation and quite similar to the ground truth image...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30510670/an-improved-fuzzy-connectedness-method-for-automatic-three-dimensional-liver-vessel-segmentation-in-ct-images
#9
Rui Zhang, Zhuhuang Zhou, Weiwei Wu, Chung-Chih Lin, Po-Hsiang Tsui, Shuicai Wu
In this paper, an improved fuzzy connectedness (FC) method was proposed for automatic three-dimensional (3D) liver vessel segmentation in computed tomography (CT) images. The vessel-enhanced image (i.e., vesselness image) was incorporated into the fuzzy affinity function of FC, rather than the intensity image used by traditional FC. An improved vesselness filter was proposed by incorporating adaptive sigmoid filtering and a background-suppressing item. The fuzzy scene of FC was automatically initialized by using the Otsu segmentation algorithm and one single seed generated adaptively, while traditional FC required multiple seeds...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30425821/evolution-model-of-health-food-safety-risk-based-on-prospect-theory
#10
Jun Luo, Baichao Ma, Yongle Zhao, Tingqiang Chen
In the growing market of health food, certain disturbances occur, such as uneven quality of products, imitation of health food, prohibited drug content in health food, functional efficacy, and actual disagreement. The safety of health food has attracted wide attention from all walks of life. In this study, we constructed a three-party game model of health food safety risk evolution, which includes health food enterprises, health food consumers, and government regulators, based on prospect theory and evolutionary game method...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30425820/functional-and-structural-plasticity-of-brain-in-elite-karate-athletes
#11
Adil Deniz Duru, Taylan Hayri Balcioglu
The structural and functional neural differences between the elite karate athletes and control group have been investigated in the concept of this study. 13 elite karate athletes and age-gender matched 13 volunteers who have not performed regular exercises participated in the study. Magnetic resonance imaging was used to acquire the anatomical and functional maps. T1-weighted anatomical images were segmented to form gray and white matter images. Voxel-based morphometry is used to elucidate the differences between the groups...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30425819/blood-pressure-estimation-using-photoplethysmography-only-comparison-between-different-machine-learning-approaches
#12
Syed Ghufran Khalid, Jufen Zhang, Fei Chen, Dingchang Zheng
Introduction: Blood pressure (BP) has been a potential risk factor for cardiovascular diseases. BP measurement is one of the most useful parameters for early diagnosis, prevention, and treatment of cardiovascular diseases. At present, BP measurement mainly relies on cuff-based techniques that cause inconvenience and discomfort to users. Although some of the present prototype cuffless BP measurement techniques are able to reach overall acceptable accuracies, they require an electrocardiogram (ECG) and a photoplethysmograph (PPG) that make them unsuitable for true wearable applications...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30425818/rank-two-nmf-clustering-for-glioblastoma-characterization
#13
Aymen Bougacha, Ines Njeh, Jihene Boughariou, Omar Kammoun, Kheireddine Ben Mahfoudh, Mariem Dammak, Chokri Mhiri, Ahmed Ben Hamida
This study investigates a novel classification method for 3D multimodal MRI glioblastomas tumor characterization. We formulate our segmentation problem as a linear mixture model (LMM). Thus, we provide a nonnegative matrix M from every MRI slice in every segmentation process' step. This matrix will be used as an input for the first segmentation process to extract the edema region from T2 and FLAIR modalities. After that, in the rest of segmentation processes, we extract the edema region from T1c modality, generate the matrix M , and segment the necrosis, the enhanced tumor, and the nonenhanced tumor regions...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30420912/the-effect-of-optical-crosstalk-on-accuracy-of-reflectance-type-pulse-oximeter-for-mobile-healthcare
#14
Hyun Jae Baek, JaeWook Shin, Jaegeol Cho
According to the theoretical equation of the pulse oximeter expressed by the ratio of amplitude (AC) and baseline (DC) obtained from the photoplethysmographic signal of two wavelengths, the difference of the amount of light absorbed depending on the melanin indicating the skin color is canceled by normalizing the AC value to the DC value of each wavelength. Therefore, theoretically, skin color does not affect the accuracy of oxygen saturation measurement. However, if there is a direct path for the light emitting unit to the light receiving unit instead of passing through the human body, the amount of light reflected by the surface of the skin changes depending on the color of the skin...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30416703/indication-of-mental-health-from-fingertip-pulse-waves-and-its-application
#15
REVIEW
Mayumi Oyama-Higa, Fumitake Ou
This article is a comprehensive review of recent studies of the authors on the indication of mental health from biological information contained in pulse waves. A series of studies discovered that the largest Lyapunov exponent (LLE) of the attractor, which is constructed for the time series data from pulse waves, can provide as an effective indicator of mental health. A low level of LLE indicates insufficiency of external adaptability, which is characteristic of dementia and depression sufferers. On the contrary, a continuous high level of LLE indicates excessive external adaptability, and people in this condition tend to resort to violence...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30410714/privacy-preserving-k-nearest-neighbor-for-medical-diagnosis-in-e-health-cloud
#16
Jeongsu Park, Dong Hoon Lee
Cloud computing is highly suitable for medical diagnosis in e-health services where strong computing ability is required. However, in spite of the huge benefits of adopting the cloud computing, the medical diagnosis field is not yet ready to adopt the cloud computing because it contains sensitive data and hence using the cloud computing might cause a great concern in privacy infringement. For instance, a compromised e-health cloud server might expose the medical dataset outsourced from multiple medical data owners or infringe on the privacy of a patient inquirer by leaking his/her symptom or diagnosis result...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30405899/software-framework-for-the-creation-and-application-of-personalized-bone-and-plate-implant-geometrical-models
#17
Nikola Vitković, Srđan Mladenović, Milan Trifunović, Milan Zdravković, Miodrag Manić, Miroslav Trajanović, Dragan Mišić, Jelena Mitić
Computer-Assisted Orthopaedic Surgery (CAOS) defines a set of techniques that use computers and other devices for planning, guiding, and performing surgical interventions. The important components of CAOS are accurate geometrical models of human bones and plate implants, which can be used in preoperational planning or for surgical guiding during an intervention. Software framework which is introduced in this study is based on the Model-View-Controller (MVC) architectural pattern, and it uses 3D models of bones and plate implants developed by the application of the Method of Anatomical Features (MAF)...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30405898/review-of-catheter-associated-urinary-tract-infections-and-in-vitro-urinary-tract-models
#18
REVIEW
Yvonne J Cortese, Victoria E Wagner, Morgan Tierney, Declan Devine, Andrew Fogarty
Catheter-associated urinary tract infections (CAUTIs) are one of the most common nosocomial infections and can lead to numerous medical complications from the mild catheter encrustation and bladder stones to the severe septicaemia, endotoxic shock, and pyelonephritis. Catheters are one of the most commonly used medical devices in the world and can be characterised as either indwelling (ID) or intermittent catheters (IC). The primary challenges in the use of IDs are biofilm formation and encrustation. ICs are increasingly seen as a solution to the complications caused by IDs as ICs pose no risk of biofilm formation due to their short time in the body and a lower risk of bladder stone formation...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30405897/gaussian-modelling-characteristics-of-peripheral-arterial-pulse-difference-between-measurements-from-the-three-trimesters-of-healthy-pregnancy
#19
Kunyan Li, Song Zhang, Lin Yang, Hongqing Jiang, Dongmei Hao, Lei Zhang, Dingchang Zheng
Arterial pulse wave analysis has been attempted to monitor the maternal physiological changes of circulatory system during pregnancy. This study aimed to quantify the difference of Gaussian modelling characteristics derived from radial pulses measured from the three trimesters of healthy pregnant women. Radial pulses were recorded from seventy pregnant women between gestational week 11-13, week 20-22, and then week 37-39. They were then normalized and decomposed into three independent Gaussian waves for deriving four key modelling characteristic parameters: including the peak time interval ( T ) and peak amplitude ratio ( R ) between the first and second Gaussian waves ( T 1,2 and R 1,2 ), and their corresponding values between the first and third Gaussian waves ( T 1,3 and R 1,3 )...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/30402214/when-collective-knowledge-meets-crowd-knowledge-in-a-smart-city-a-prediction-method-combining-open-data-keyword-analysis-and-case-based-reasoning
#20
Ohbyung Kwon, Yun Seon Kim, Namyeon Lee, Yuchul Jung
One of the significant issues in a smart city is maintaining a healthy environment. To improve the environment, huge amounts of data are gathered, manipulated, analyzed, and utilized, and these data might include noise, uncertainty, or unexpected mistreatment of the data. In some datasets, the class imbalance problem skews the learning performance of the classification algorithms. In this paper, we propose a case-based reasoning method that combines the use of crowd knowledge from open source data and collective knowledge...
2018: Journal of Healthcare Engineering
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