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Journals IEEE Transactions on Bio-medic...

IEEE Transactions on Bio-medical Engineering

https://read.qxmd.com/read/38536678/dynamic-peripheral-hemoperfusion-distribution-monitoring-based-on-janus-flexible-sensor-system
#1
JOURNAL ARTICLE
Chenxiao Huang, Ouyang He, Zhechen Lao, Hanhao Liu, Yanlong Leng, Xuanhao Xu, Shuai Tian, Yawei Wang, Guifu Wu, Ruya Li, Yubo Fan
OBJECTIVE: Peripheral vascular disease is a worldwide leading health concern. Real-time peripheral hemoperfusion monitoring during treatment is essential to plan treatment strategies to improve circulatory enhancement effects. METHODS: The present work establishes a Janus flexible perfusion (JFP) sensor system for dynamic peripheral hemoperfusion monitoring. We develop a Janus structure design with different Young's modulus to improve the mechanical properties for motion artifacts suppression...
March 27, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38530718/indirect-shear-wave-excitation-for-brain-magnetic-resonance-elastography-with-minimal-cerebral-blood-flow-alteration
#2
JOURNAL ARTICLE
Suhao Qiu, Zhao He, Runke Wang, Ruokun Li, Wei Jin, Liang Chen, Jun Liu, Fuhua Yan, Guang-Zhong Yang, Yuan Feng
UNLABELLED: Magnetic resonance elastography (MRE) of brain relies on inducing and measuring shear waves in the brain. However, studies have shown vibration could induce changes in cerebral blood flow (CBF), which has a modulation effect and can affect the biomechanical properties measured. OBJECTIVE: This work demonstrates the initial prototype of the indirect excitation method, which can generate shear waves in the brain with minimal changes in CBF. METHODS: A simple system was designed to produce stable vibrations underneath the neck...
March 26, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38526899/verification-study-of-in-silico-computed-intracardiac-blood-flow-with-4d-flow-mri
#3
JOURNAL ARTICLE
L Obermeier, M Wiegand, F Hellmeier, C Manini, T Kuehne, L Goubergrits, K Vellguth
OBJECTIVE: Major challenges for clinical applications of in silico medicine are limitations in time and computational resources. Computational approaches should therefore be tailored to specific applications with relatively low complexity and must be verified and validated against clinical gold standards. METHODS: This study performed computational fluid dynamics simulations of left ventricular hemodynamics of different complexity based on shape reconstruction from steady state gradient echo magnetic resonance imaging (MRI) data...
March 25, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38512744/cross-modal-consistency-for-single-modal-mr-image-segmentation
#4
JOURNAL ARTICLE
Wenxuan Xu, Cangxin Li, Yun Bian, Qingquan Meng, Weifang Zhu, Fei Shi, Xinjian Chen, Chengwei Shao, Dehui Xiang
OBJECTIVE: Multi-modal magnetic resonance (MR) image segmentation is an important task in disease diagnosis and treatment, but it is usually difficult to obtain multiple modalities for a single patient in clinical applications. To address these issues, a cross-modal consistency framework is proposed for a single-modal MR image segmentation. METHODS: To enable single-modal MR image segmentation in the inference stage, a weighted cross-entropy loss and a pixel-level feature consistency loss are proposed to train the target network with the guidance of the teacher network and the auxiliary network...
March 21, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38512743/an-8-channel-transceiver-coil-for-carotid-artery-imaging-at-7t-using-an-optimized-shield-design
#5
JOURNAL ARTICLE
Pedram Yazdanbakhsh, Marcus Couch, Kyle M Gilbert, Johnny Der Hovagimian, David A Rudko, Richard D Hoge
OBJECTIVE: To design and fabricate a transmit/receive (T/R) radiofrequency (RF) coil array for MRI of the carotid arteries at 7 T with optimal shielding to improve transmit performance in parallel transmit (pTx) mode. METHODS: The carotid coil included 8 total RF elements, with left and right subarrays, each consisting of 4 overlapping loops with RF shields. Electromagnetic (EM) simulations were performed to optimize and improve the transmit performance of the array by determining the optimal distance between the RF shield and each subarray...
March 21, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38507389/multiscale-optical-imaging-fusion-for-cervical-precancer-diagnosis-integrating-widefield-colposcopy-and-high-resolution-endomicroscopy
#6
JOURNAL ARTICLE
David Brenes, Mila P Salcedo, Jackson B Coole, Yajur Maker, Alex Kortum, Richard A Schwarz, Jennifer Carns, Imran S Vohra, Julio C Possati-Resende, Marcio Antoniazzi, Bruno de Oliveira Fonseca, Karen C Borba Souza, Iara V Vidigal Santana, Flavia Fazzio Barbin, Regis Kreitchmann, Nirmala Ramanujam, Kathleen M Schmeler, Rebecca Richards-Kortum
OBJECTIVE: Early detection and treatment of cervical precancers can prevent disease progression. However, in low-resource communities with a high incidence of cervical cancer, high equipment costs and a shortage of specialists hinder preventative strategies. This manuscript presents a low-cost multiscale in vivo optical imaging system coupled with a computer-aided diagnostic system that could enable accurate, real-time diagnosis of high-grade cervical precancers. METHODS: The system combines portable colposcopy and high-resolution endomicroscopy (HRME) to acquire spatially registered widefield and microscopy videos...
March 20, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38498753/a-deep-transfer-learning-approach-for-sleep-stage-classification-and-sleep-apnea-detection-using-wrist-worn-consumer-sleep-technologies
#7
JOURNAL ARTICLE
Mads Olsen, Jamie M Zeitzer, Risa N Richardson, Valerie H Musgrave, Helge B D Sorensen, Emmanuel Mignot, Poul J Jennum
Obstructive sleep apnea (OSA) is a common, underdiagnosed sleep-related breathing disorder with serious health implications Objective - We propose a deep transfer learning approach for sleep stage classification and sleep apnea (SA) detection using wrist-worn consumer sleep technologies (CST). Methods - Our model is based on a deep convolutional neural network (DNN) utilizing accelerometers and photo-plethysmography signals from nocturnal recordings. The DNN was trained and tested on internal datasets that include raw data from clinical and wrist-worn devices; external validation was performed on a hold-out test dataset containing raw data from a wrist-worn CST...
March 18, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38498752/ecgan-assisted-rest-net-based-on-fuzziness-for-osa-detection
#8
JOURNAL ARTICLE
Zhiya Wang, Xue Pan, Zhen Mei, Zhifei Xu, Yudan Lv, Yuan Zhang, Cuntai Guan
OBJECTIVE: Growing attention has been paid recently to electrocardiogram (ECG) based obstructive sleep apnea (OSA) detection, with some progresses been made on this topic. However, the lack of data, low data quality, and incomplete data labeling hinder the application of deep learning to OSA detection, which in turn affects the overall generalization capacity of the network. METHODS: To address these issues, we propose the ResT-ECGAN framework. It uses a one-dimensional generative adversarial network (ECGAN) for sample generation, and integrates it into ResTNet for OSA detection...
March 18, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38498751/advancing-the-local-pulse-wave-velocity-measurement-wave-confluence-decomposition-using-a-double-gaussian-propagation-model
#9
JOURNAL ARTICLE
Fabian Beutel, Chris Van Hoof, Evelien Hermeling
Background Pulse wave velocity (PWV) is a marker of arterial stiffness and local measurements could facilitate its widescale clinical use. However, confluence of incident and early reflected waves leads to biased spatiotemporal PWV estimates. Objective We introduce the Double Gaussian Propagation Model (DGPM) to measure local PWV in consideration of wave confluence (PWVDGPM ) and compare it against conventional spatiotemporal PWV (PWVST ), with Bramwell-Hill PWV (PWVBH ) and blood pressure (BP) as reference measures...
March 18, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38498750/a-novel-local-magnetic-fluid-hyperthermia-based-on-high-gradient-field-guided-by-magnetic-particle-imaging
#10
JOURNAL ARTICLE
Siao Lei, Jie He, Xiazi Huang, Hui Hui, Yu An, Jie Tian
Magnetic Particle Imaging (MPI)-guided Magnetic Fluid Hyperthermia (MFH) has the potential for widespread utilization, as it allows for the prediction of magnetothermal dosage, real-time visualization of the thermal therapy process, and precise localization of the lesion area. However, the existing MPI-guided MFH (MPI-MFH) method is insensitive to concentration gradients of magnetic nanoparticles (MNPs) and is susceptible to causing damage to normal tissues with high MNP concentrations during MFH treatment, while inadequately heating tumor tissues with lower MNP concentrations...
March 18, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38498749/shedding-light-on-cardiac-excitation-in-vitro-and-in-silico-analysis-of-native-ca-2-channel-activation-in-guinea-pig-cardiomyocytes-using-organic-photovoltaic-devices
#11
JOURNAL ARTICLE
Theresa Rienmuller, Niroj Shrestha, Mathias Polz, Sara Stoppacher, Daniel Ziesel, Ludovico Migliaccio, Brigitte Pelzmann, Petra Lang, Klaus Zorn-Pauly, Sonja Langthaler, Aleksandar Opancar, Christian Baumgartner, Muammer Ucal, Rainer Schindl, Vedran Derek, Susanne Scheruebel
OBJECTIVE: This study aims to explore the potential of organic electrolytic photocapacitors (OEPCs), an innovative photovoltaic device, in mediating the activation of native voltage-gated Cav1.2 channels (ICa,L) in Guinea pig ventricular cardiomyocytes. METHODS: Whole-cell patch-clamp recordings were employed to examine light-triggered OEPC mediated ICa,L activation, integrating the channel's kinetic properties into a multicompartment cell model to take intracellular ion concentrations into account...
March 18, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38483799/energy-efficient-sleep-apnea-detection-using-a-hyperdimensional-computing-framework-based-on-wearable-bracelet-photoplethysmography
#12
JOURNAL ARTICLE
Tian Chen, Jingtao Zhang, Zeju Xu, Stephen J Redmond, Nigel H Lovell, Guanzheng Liu, Changhong Wang
OBJECTIVE: Sleep apnea syndrome (SAS) is a common sleep disorder, which has been shown to be an important contributor to major neurocognitive and cardiovascular sequelae. Considering current diagnostic strategies are limited with bulky medical devices and high examination expenses, a large number of cases go undiagnosed. To enable large-scale screening for SAS, wearable photoplethysmography (PPG) technologies have been used as an early detection tool. However, existing algorithms are energy-intensive and require large amounts of memory resources, which are believed to be the major drawbacks for further promotion of wearable devices for SAS detection...
March 14, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38478444/distinct-time-resolved-brain-wide-coactivations-in-oxygenated-and-deoxygenated-hemoglobin
#13
JOURNAL ARTICLE
Ali F Khan, Han Yuan, Zachary A Smith, Lei Ding
OBJECTIVE: Human resting-state networks (RSNs) estimated from oxygenated (HbO) and deoxygenated hemoglobin (HbR) data exhibit strong similarities, while task-based studies show different dynamics in HbR and HbO responses. Such a discrepancy might be explained due to time-averaged estimations of RSNs. Our study investigated differences between HbO and HbR on time-resolved brain-wide coactivation patterns (CAPs). APPROACH: Diffuse optical tomography was reconstructed from resting-state whole-head functional near-infrared spectroscopy data of HbR and HbO in individual healthy participants...
March 13, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38478443/real-time-cavitation-monitoring-during-optical-coherence-tomography-guided-photo-mediated-ultrasound-therapy-of-the-retina
#14
JOURNAL ARTICLE
Mingyang Wang, Wei Zhang, Zhongping Chen, Yannis M Paulus, Xueding Wang, Xinmai Yang
UNLABELLED: Photo-mediated ultrasound therapy (PUT) is a novel antivascular therapeutic modality based on cavitation-induced bioeffects. During PUT, synergistic combinations of laser pulses and ultrasound bursts are used to remove the targeted microvessels selectively and precisely without harming nearby tissue. In the current study, an integrated system combining PUT and spectral domain optical coherence tomography (SD-OCT) was developed, where the SD-OCT system was used to guide PUT by detecting cavitation in real time in the retina of the eye...
March 13, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38470574/a-complete-scheme-for-multi-character-classification-using-eeg-signals-from-speech-imagery
#15
JOURNAL ARTICLE
Hongguang Pan, Yiran Wang, Zhuoyi Li, Xin Chu, Bingyang Teng, Hongzheng Gao
Some classification studies of brain-computer interface (BCI) based on speech imagery show potential for improving communication skills in patients with amyotrophic lateral sclerosis (ALS). However, current research on speech imagery is limited in scope and primarily focuses on vowels or a few selected words. In this paper, we propose a complete research scheme for multi-character classification based on EEG signals derived from speech imagery. Firstly, we record 31 speech imagery contents, including 26 alphabets and 5 commonly used punctuation marks, from seven subjects using a 32-channel electroencephalogram (EEG) device...
March 12, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38466599/avoiding-post-processing-with-event-based-detection-in-biomedical-signals
#16
JOURNAL ARTICLE
Nick Seeuws, Maarten De Vos, Alexander Bertrand
OBJECTIVE: Finding events of interest is a common task in biomedical signal processing. The detection of epileptic seizures and signal artefacts are two key examples. Epoch-based classification is the typical machine learning framework to detect such signal events because of the straightforward application of classical machine learning techniques. Usually, post-processing is required to achieve good performance and enforce temporal dependencies. Designing the right post-processing scheme to convert these classification outputs into events is a tedious, and labor-intensive element of this framework...
March 11, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38457328/asymmetric-backed-multi-frequency-ultrasonic-transducer-for-conformal-tumor-ablation
#17
JOURNAL ARTICLE
Kang Chen, Dexing Kong, Jing Yuan, Yili Hu, Jianping Li, Jijie Ma, Jianming Wen
OBJECTIVE: Minimally invasive ultrasound ablation transducers have been widely studied. However, conventional designs are limited by the single working frequency, restricting their conformal ablation ability (i.e. ablation size and shape controllability). METHODS: New multi-frequency ultrasonic transducer design method is proposed based on the asymmetric backing layer, which divides the transducer into non-backing-layer region (i.e. front-piezoelectric region) and backing-layer region (i...
March 8, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38442044/power-doppler-ultrasonic-imaging-of-peripheral-perfusion-in-diabetic-mice
#18
JOURNAL ARTICLE
Somaye Babaei, Lawrence W Dobrucki, Michael F Insana
OBJECTIVE: We explored the capabilities of power-Doppler ultrasonic (PD-US) imaging without contrast enhancement for monitoring changes in muscle perfusion over time. METHODS: Ischemic recovery was observed in healthy and type II diabetic male and female mice with and without exercise. In separate studies, perfusion was measured during and after 5-min ischemic periods and during four-week recovery periods following irreversible femoral ligation. A goal was to assess how well PD-US estimates tracked the diabetic-related changes in endothelial function that influenced perfusion...
March 5, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38437141/shg-fiberscopy-assessment-of-collagen-morphology-and-its-potential-for-breast-cancer-optical-histology
#19
JOURNAL ARTICLE
Gunnsteinn Hall, Wenxuan Liang, Zaver M Bhujwalla, Xingde Li
OBJECTIVE: this study is to investigate the feasibility of our recently developed nonlinear fiberscope for label-free in situ breast tumor detection and lymph node status assessment based on second harmonic generation (SHG) imaging of fibrillar collagen matrix with histological details. The long-term goal is to improve the current biopsy-based cancer paradigm with reduced sampling errors. METHODS: in this pilot study we undertook retrospective SHG imaging study of ex vivo invasive ductal carcinoma human biopsy tissue samples, and carried out quantitative image analysis to search for collagen structural signatures that are associated with the malignance of breast cancer...
March 4, 2024: IEEE Transactions on Bio-medical Engineering
https://read.qxmd.com/read/38412080/subband-independent-component-analysis-for-coherence-enhancement
#20
JOURNAL ARTICLE
Zhenghao Guo, Yuhang Xu, Jan Rosenzweig, Verity M McClelland, Ivana Rosenzweig, Zoran Cvetkovic
OBJECTIVE: Cortico-muscular coherence (CMC) is becoming a common technique for detection and characterization of functional coupling between the motor cortex and muscle activity. It is typically evaluated between surface electromyogram (sEMG) and electroencephalogram (EEG) signals collected synchronously during controlled movement tasks. However, the presence of noise and activities unrelated to observed motor tasks in sEMG and EEG results in low CMC levels, which often makes functional coupling difficult to detect...
February 27, 2024: IEEE Transactions on Bio-medical Engineering
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