Body-Mounted MR-Conditional Robot for Minimally Invasive Liver Intervention
Ann Biomed Eng. 2024 Apr 18. doi: 10.1007/s10439-024-03503-2. Online ahead of print.ABSTRACTMR-guided microwave ablation (MWA) has proven effective in treating hepatocellular carcinoma (HCC) with small-sized tumors, but the state-of-the-art technique suffers from sub-optimal workflow due to the limited accuracy provided by the manual needle insertions. This paper presents a compact body-mounted MR-conditional robot that can operate in closed-bore MR scanners for accurate needle guidance. The robotic platform consists of two stacked Cartesian XY stages, each with two degrees of freedom, that facilitate needle insertion pose...
Source: Annals of Biomedical Engineering - April 18, 2024 Category: Biomedical Engineering Authors: Zhefeng Huang Anthony L Gunderman Samuel E Wilcox Saikat Sengupta Jay Shah Aiming Lu David Woodrum Yue Chen Source Type: research
Tunable < em > Q < /em > -factor wavelet transform based identification of diabetic patients using ECG signals
Comput Methods Biomech Biomed Engin. 2024 Apr 18:1-10. doi: 10.1080/10255842.2024.2342512. Online ahead of print.ABSTRACTDiabetes is a chronic health condition that is characterized by increased levels of glucose (sugar) in the blood. It can have harmful effects on different parts of the body, such as the retina of the eyes, skin, nervous system, kidneys, and heart. Diabetes affects the structure of electrocardiogram (ECG) impulses by causing cardiovascular autonomic dysfunction. Multi-resolution analysis of the input ECG signal is utilized in this paper to develop a machine learning-based system for the automated detectio...
Source: Computer Methods in Biomechanics and Biomedical Engineering - April 18, 2024 Category: Biomedical Engineering Authors: Anuja Jain Anurag Verma Amit Kumar Verma Varun Bajaj Source Type: research
Body-Mounted MR-Conditional Robot for Minimally Invasive Liver Intervention
Ann Biomed Eng. 2024 Apr 18. doi: 10.1007/s10439-024-03503-2. Online ahead of print.ABSTRACTMR-guided microwave ablation (MWA) has proven effective in treating hepatocellular carcinoma (HCC) with small-sized tumors, but the state-of-the-art technique suffers from sub-optimal workflow due to the limited accuracy provided by the manual needle insertions. This paper presents a compact body-mounted MR-conditional robot that can operate in closed-bore MR scanners for accurate needle guidance. The robotic platform consists of two stacked Cartesian XY stages, each with two degrees of freedom, that facilitate needle insertion pose...
Source: Annals of Biomedical Engineering - April 18, 2024 Category: Biomedical Engineering Authors: Zhefeng Huang Anthony L Gunderman Samuel E Wilcox Saikat Sengupta Jay Shah Aiming Lu David Woodrum Yue Chen Source Type: research
Validation of ALOS/PALSAR Subsurface Penetration Depth in Farafra Oasis as an Arid Region Based on Field Ground-Penetrating Radar Measurements
AbstractIn the last few years, ALOS/PALSAR (L-band) (HH, HV, VH, and VV) images have been widely used due to their ability to penetrate the surface in certain conditions, such as low moisture or dry friable sandy soil. Images from the ALOS sensor were used to delineate subsurface structures and optical images such as Landsat-7 ETM + data were used to discriminate between scatterings from the Earth’s surface and subsurface materials. Thus, the Farafra Desert is an optimal geological environment for L-band microwave penetration, as its geology is characterized by friable sand sheets covering limestone (Tarawan Formati...
Source: Sensing and Imaging - April 18, 2024 Category: Biomedical Engineering Source Type: research
Accuracy of patient-specific CT organ doses from Monte Carlo simulations: influence of CT-based voxel models
In this study, organ dose calculations were performed with ImpactMC for chest and cardiac CT using whole-body and anatomy-specific voxel models to estimate the accuracy of CT organ doses based on the latter model. When the 3D patient mod el is limited to the CT scan range, CT organ doses from Monte Carlo simulations are the most accurate for organs entirely in the field of view. For these organs only the radiation dose related to scatter from the rest of the body is not incorporated. For organs lying partially outside the field of v iew organ doses are overestimated by not accounting for the non-irradiated tissue mass. Thi...
Source: Australasian Physical and Engineering Sciences in Medicine - April 18, 2024 Category: Biomedical Engineering Source Type: research
Study of PRESAGE ® dosimeter for end-to-end 3D radiotherapy verification using an anthropomorphic phantom with bespoke dosimeter insert
This study proves the capability of PRESAGE® and bespoke MAX-HD phantom in conjunction with the 3Dmicro HD-OCT system to measure 3D dose distribution for end-to-end dosimetry verification. (Source: Australasian Physical and Engineering Sciences in Medicine)
Source: Australasian Physical and Engineering Sciences in Medicine - April 18, 2024 Category: Biomedical Engineering Source Type: research
Near-Field Wideband Secure Communications: An Analog Beamfocusing Approach
In the rapidly advancing landscape of 6G, characterized by ultra-high-speed wideband transmission in millimeter-wave and terahertz bands, our paper addresses the pivotal task of enhancing physical layer security (PLS) within near-field wideband communications. We introduce true-time delayer (TTD)-incorporated analog beamfocusing techniques designed to address the interplay between near-field propagation and wideband beamsplit, an uncharted domain in existing literature. Our approach to maximizing secrecy rates involves formulating an optimization problem for joint power allocation and analog beamformer design, employing a ...
Source: IEEE Transactions on Signal Processing - April 17, 2024 Category: Biomedical Engineering Source Type: research
Obstructive sleep apnea detection during wakefulness: a comprehensive methodological review
AbstractObstructive sleep apnea (OSA) is a chronic condition affecting up to 1 billion people, globally. Despite this spread, OSA is still thought to be underdiagnosed. Lack of diagnosis is largely attributed to the high cost, resource-intensive, and time-consuming nature of existing diagnostic technologies during sleep. As individuals with OSA do not show many symptoms other than daytime sleepiness, predicting OSA while the individual is awake (wakefulness) is quite challenging. However, research especially in the last decade has shown promising results for quick and accurate methodologies to predict OSA during wakefulnes...
Source: Medical and Biological Engineering and Computing - April 17, 2024 Category: Biomedical Engineering Source Type: research
Correction to: Computer simulation ‑based nanothermal field and tissue damage analysis for cardiac tumor ablation
(Source: Medical and Biological Engineering and Computing)
Source: Medical and Biological Engineering and Computing - April 17, 2024 Category: Biomedical Engineering Source Type: research
A novel transformer-based aggregation model for predicting gene mutations in lung adenocarcinoma
AbstractIn recent years, predicting gene mutations on whole slide imaging (WSI) has gained prominence. The primary challenge is extracting global information and achieving unbiased semantic aggregation. To address this challenge, we propose a novel Transformer-based aggregation model, employing a self-learning weight aggregation mechanism to mitigate semantic bias caused by the abundance of features in WSI. Additionally, we adopt a random patch training method, which enhances model learning richness by randomly extracting feature vectors from WSI, thus addressing the issue of limited data. To demonstrate the model ’s eff...
Source: Medical and Biological Engineering and Computing - April 17, 2024 Category: Biomedical Engineering Source Type: research
Clinical evaluation of a patient participation assessment system for upper extremity rehabilitation exercises
Abstract In conventional and robotic rehabilitation, the patient ’s active participation in exercises is essential for the maximum functional output to be received from therapy. In rehabilitation exercises performed with robotic devices, the difficulty levels of therapy tasks and the device assistance are adjusted based on the patient’s therapy performance to improve active participation. However, the existing therapy performance evaluation methods are based on either some specific device designs or certain therapy tasks, which limits their widespread use. In this paper, the effectiveness of a participation assess...
Source: Medical and Biological Engineering and Computing - April 17, 2024 Category: Biomedical Engineering Source Type: research
Assessment of visual fatigue in SSVEP-based brain-computer interface: a comprehensive study
AbstractFatigue deteriorates the performance of a brain-computer interface (BCI) system; thus, reliable detection of fatigue is the first step to counter this problem. The fatigue evaluated by means of electroencephalographic (EEG) signals has been studied in many research projects, but widely different results have been reported. Moreover, there is scant research when considering the fatigue on steady-state visually evoked potential (SSVEP)-based BCI. Therefore, nowadays, fatigue detection is not a completely solved topic. In the current work, the issues found in the literature that led to the differences in the results a...
Source: Medical and Biological Engineering and Computing - April 17, 2024 Category: Biomedical Engineering Source Type: research
Reconstructive interpolation for pulse wave estimation to improve local PWV measurement of carotid artery
In conclusion, the reconstructive interpolation for the pulse wave estimation improves the accuracy and repeatability of the carotid local PWV measurement.Graphical abstractUltrasonic transit time-based local pulse wave velocity (PWV) measurement is defined as the distance between two beam positions on a segment of common carotid artery (CCA) divided by the transit time of the pulse wave (PW). However, PWs estimated from ultrasonic radio frequency (RF) signals with a limited number of frames using the motion tracking are typically discontinuous. In this work, a method that involves motion tracking combined with reconstruct...
Source: Medical and Biological Engineering and Computing - April 17, 2024 Category: Biomedical Engineering Source Type: research
An efficient cardio vascular disease prediction using multi-scale weighted feature fusion-based convolutional neural network with residual gated recurrent unit
Comput Methods Biomech Biomed Engin. 2024 Apr 17:1-25. doi: 10.1080/10255842.2024.2339475. Online ahead of print.ABSTRACTThe cardiovascular disease (CVD) is the dangerous disease in the world. Most of the people around the world are affected by this dangerous CVD. In under-developed countries, the prediction of CVD remains the toughest job and it takes more time and cost. Diagnosing this illness is an intricate task that has to be performed precisely to save the life span of the human. In this research, an advanced deep model-based CVD prediction and risk analysis framework is proposed to minimize the death rate of humans ...
Source: Computer Methods in Biomechanics and Biomedical Engineering - April 17, 2024 Category: Biomedical Engineering Authors: K Gunasekaran V D Ambeth Kumar K Jayashree Source Type: research
Electricity generation and real oily wastewater treatment by Pseudomonas citronellolis 620C in a microbial fuel cell: pyocyanin production as electron shuttle
Bioprocess Biosyst Eng. 2024 Apr 17. doi: 10.1007/s00449-024-03016-1. Online ahead of print.ABSTRACTIn the present study, the potential of Pseudomonas citronellolis 620C strain was evaluated, for the first time, to generate electricity in a standard, double chamber microbial fuel cell (MFC), with oily wastewater (OW) being the fuel at 43.625 mg/L initial chemical oxygen demand (COD). Both electrochemical and physicochemical results suggested that this P. citronellolis strain utilized efficiently the OW substrate and generated electricity in the MFC setup reaching 0.05 mW/m2 maximum power. COD removal was remarkable reachin...
Source: Bioprocess and Biosystems Engineering - April 17, 2024 Category: Biomedical Engineering Authors: Constantina K Varnava Panagiotis Persianis Ioannis Ieropoulos Argyro Tsipa Source Type: research
