Journal of Medical Engineering and Technology最新文献

Heart rate study using the cardiac sounds. 使用心音进行心率研究。

Journal of Medical Engineering and Technology Pub Date : 2025-10-10 DOI: 10.1080/03091902.2025.2570159

Abdelhakim Souidi, Amine Debbal, Fadia Meziani

{"title":"Heart rate study using the cardiac sounds.","authors":"Abdelhakim Souidi, Amine Debbal, Fadia Meziani","doi":"10.1080/03091902.2025.2570159","DOIUrl":"https://doi.org/10.1080/03091902.2025.2570159","url":null,"abstract":"The purpose of this paper is to present a straightforward framework for Heart Rate (HR) estimation from a Phonocardiogram (PCG) record and study the association between murmur severity levels and HR. The system focuses primarily on data processing procedure, which is based on signal preprocessing using Maximal Overlap Discrete Wavelet Transform (MODWT) to delineate murmurs from heart sounds. We exploit the characteristics of Logistic function to derive an enhanced PCG envelope that serves as prerequisite for HR algorithm detection. In fact, the PCG envelope presents a cyclostationarity that can be easily detected throughout a cross-covariance autocorrelation function to calculate the Heart Rate (HR). In addition, the effect of minor and pronounced murmurs is gauged by the Energetic Ratio (ER) that provides a comprehensive idea about the superimposed murmur energy on first and second Heart sounds. The study was conducted on PASCAL dataset with 335 real clinical records. Results shows that mild murmurs with low ER are not associated with HR (p-value = 0.846). However, moderate-severe murmurs indicate a significant association with HR (p-value = 0.0002). Furthermore, HR decreases as Energetic Ratio increases. These findings could be valuable to medical professionals operating in the emergency departments.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145276221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progressive X-ray tube degradation detected via daily mammography quality control. 通过日常乳房x线摄影质量控制检测进行性x射线管退化。

Journal of Medical Engineering and Technology Pub Date : 2025-10-07 DOI: 10.1080/03091902.2025.2553132

Túlio Guilherme Soares Marques, Diana Rodrigues de Pina, Matheus Alvarez

{"title":"Progressive X-ray tube degradation detected via daily mammography quality control.","authors":"Túlio Guilherme Soares Marques, Diana Rodrigues de Pina, Matheus Alvarez","doi":"10.1080/03091902.2025.2553132","DOIUrl":"https://doi.org/10.1080/03091902.2025.2553132","url":null,"abstract":"This study evaluated whether routine daily quality control (QC) tests can anticipate X-ray tube degradation in a digital mammography system. Over 30 months, tube loading, contrast-to-noise ratio (CNR), and image quality scores were extracted from daily QC tests and analysed alongside a documented tube failure in September 2024. These results were compared with annual tube output measurements and environmental data. A progressive rise in tube loading was observed prior to tube failure, increasing from 84.45 to 94.58 mAs (12.0%). The Mann-Kendall test confirmed a significant upward trend (τ = 0.461; p < 0.001), with Sen's slope indicating +0.19 mAs/month. Despite this, CNR values remained stable (mean = 14.76 ± 0.20), and image quality showed no degradation. However, tube output declined consistently (from 30.95 ± 3.08 to 28.76 ± 0.36 μGy/mAs), confirming reduced efficiency. Temperature and humidity remained within recommended limits. These findings suggest that gradual increases in tube loading can indicate early tube degradation, even when image quality remains unaffected. Beyond confirming equipment performance, daily QC may serve as a strategic tool to detect early signs of degradation, extend device lifespan, reduce unplanned downtime, and promote patient safety without added costs.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145240046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication and experimental analysis of a novel flexible keel prosthetic foot utilizing functionally graded materials. 新型功能梯度材料柔性龙骨假肢足的制备与实验分析。

Journal of Medical Engineering and Technology Pub Date : 2025-10-06 DOI: 10.1080/03091902.2025.2570158

Ehab N Abbas, Kadhim K Resan, Muhsin J Jweeg, Emad K Njim, Royal Madan

{"title":"Fabrication and experimental analysis of a novel flexible keel prosthetic foot utilizing functionally graded materials.","authors":"Ehab N Abbas, Kadhim K Resan, Muhsin J Jweeg, Emad K Njim, Royal Madan","doi":"10.1080/03091902.2025.2570158","DOIUrl":"https://doi.org/10.1080/03091902.2025.2570158","url":null,"abstract":"The present study performs the fabrication and experimental performance analysis of a novel flexible keel prosthetic foot made up of functionally graded materials (FGMs). To obtain the desired mechanical properties, the keel of the prosthetic foot was fabricated by combining wood and carbon fibre-reinforced polymer (CFRP). The FGM in the foot was introduced by creating layers of a blend of burnt rice husk particles and silica rubber with different weight percentages (2%, 4%, 6%, 8%, 10%, and 12%). Moreover, a casting was performed to develop a keel prosthetic foot using a metal mould. Experimental tests were conducted to investigate the foot performance and compared with Solid Ankle Cushion Heel (SACH) foot designs by carrying out tests such as tensile test, hardness test, dorsiflexion analysis, and fatigue testing. Fatigue life and dorsiflexion angle values are found to be higher for the proposed design in comparison to the SACH foot. This study presents important insights into the potential benefits and practicality of using flexible keel prosthetic feet made from functionally graded materials. The enhanced mechanical characteristics and tailored design of these prosthetic feet can significantly improve user comfort, stability, and overall biomechanical performance.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145240052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pre- and post-fixation comparative study on the rehabilitation of transfemoral amputees using a patient-specific polycentric knee joint. 采用患者特异性多中心膝关节对经股骨截肢者进行康复治疗的前后对比研究。

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-06-17 DOI: 10.1080/03091902.2025.2514563

Vaibhav Jaiswal, Subramani Kanagaraj

{"title":"Pre- and post-fixation comparative study on the rehabilitation of transfemoral amputees using a patient-specific polycentric knee joint.","authors":"Vaibhav Jaiswal, Subramani Kanagaraj","doi":"10.1080/03091902.2025.2514563","DOIUrl":"10.1080/03091902.2025.2514563","url":null,"abstract":"Rehabilitation of transfemoral amputees remains a societal challenge due to the absence of natural knee joint motion. Despite progress in high-end prosthetic knee joints, issues of affordability, functionality, and patient-specific fitting persist. This study addresses these concerns through an indigenously developed, patient-specific configurable polycentric knee joint with improved functionalities. Five transfemoral amputees and ten healthy controls participated. The prosthesis is fitted to amputees, followed by a 12-week rehabilitation program. Pre- and post-fixation assessments are conducted using SF-36 and QTFA-70 to evaluate health-related quality of life (HRQL) and functionality. Kinematic and dynamic analyses during daily activities are performed using a high-speed video camera, Kinovea software, manual goniometer, and force plate. Results show a 55% improvement in HRQL and 88% improvement in global performance post-fixation. The measured knee flexion angles are 47.6°±5.9° (swing phase), 131.4°±6.6° (deep squat), 112.8°±5° (floor sitting), 125.1°±5.4° (chair sitting), and 99.2°±4.5° (bent knee sitting), closely matching healthy controls. Peak vertical ground reaction forces and gait symmetry also align with sound limbs and controls. These outcomes demonstrate the prosthetic design's potential in restoring near-anatomical motion and significantly improving the functional performance of transfemoral amputees.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"257-275"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144318301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strain shielding effect analysis of solid and porous Ti-6Al-4V alloy implanted femur bone using finite element analysis. 固体和多孔Ti-6Al-4V合金植入股骨的应变屏蔽效应有限元分析

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-05-03 DOI: 10.1080/03091902.2025.2498748

Sita Ram Modi, Amardeep Dongare, Kailash Jha

引用次数: 0

Multi-stage generative adversarial network model for segmenting retinal vascular structures in eye disease prediction. 眼疾病预测中视网膜血管结构分割的多阶段生成对抗网络模型。

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-05-28 DOI: 10.1080/03091902.2025.2509275

Roshan S Bhanuse, Ganesh Yenurkar, Kavita R Singh, Sandip Mal, Sulakshana B Mane, Rahul Kachhwah, Neeraj Rajbhar, Saksham Take, Tejas Thakre

{"title":"Multi-stage generative adversarial network model for segmenting retinal vascular structures in eye disease prediction.","authors":"Roshan S Bhanuse, Ganesh Yenurkar, Kavita R Singh, Sandip Mal, Sulakshana B Mane, Rahul Kachhwah, Neeraj Rajbhar, Saksham Take, Tejas Thakre","doi":"10.1080/03091902.2025.2509275","DOIUrl":"10.1080/03091902.2025.2509275","url":null,"abstract":"Retinal vessel segmentation is essential for precise ophthalmological diagnoses, particularly in the prediction of retinal degenerative diseases. However, existing methods usually lack robustness and accuracy, especially in segmentation of thin or overlapping vessels. To face these challenges, this study introduces an enhanced retina-RV-Gain segmentation model, which employs an architecture of various stages to refine the results of segmentation iteratively. The model integrates attention mechanisms to better capture complex vessel structures and employs an adaptive loss function to manage class imbalance. In addition, a specially designed discriminator enhances the model's ability to distinguish fine details from background noise vessels. The proposed RV-Gan is trained in comprehensive data sets that comprise retinal images, segmentation masks and noted labels, including Stare-DB, Chase-DB1 and Drive, using the Python platform. Experimental results demonstrate a segmentation accuracy of up to 99% in normal, abnormal and base vessels. These findings highlight the potential of the model to significantly improve diagnostic accuracy and support early prediction of disease in clinical ophthalmology. Overall, the enhanced RV-Gan architecture offers a robust solution to the limitations of current approaches, providing segmentation of high fidelity retinal vessels and advancing the predictive analysis of retinal degenerative conditions.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"231-256"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144162744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3DPiPPIN: 3D printing of positive airway pressure (PAP) therapy interfaces: a single site feasibility study. 3DPiPPIN: 3D打印气道正压（PAP）治疗界面：单点可行性研究。

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-07-29 DOI: 10.1080/03091902.2025.2532648

Stephanie K Mansell, Oliver Olsen, Francesca Gowing, Zaid Muwaffak, Cherry Kilbride, Stephen Hilton, Eleanor Main, Silvia Schievano, Swapna Mandal

{"title":"3DPiPPIN: 3D printing of positive airway pressure (PAP) therapy interfaces: a single site feasibility study.","authors":"Stephanie K Mansell, Oliver Olsen, Francesca Gowing, Zaid Muwaffak, Cherry Kilbride, Stephen Hilton, Eleanor Main, Silvia Schievano, Swapna Mandal","doi":"10.1080/03091902.2025.2532648","DOIUrl":"10.1080/03091902.2025.2532648","url":null,"abstract":"Sleep-disordered breathing (SDB) affects 14% of the population. Positive airway pressure (PAP) therapy is standard, but commercially available interfaces may be ineffective due to poor fit. Three-dimensional (3D) printing can customise PAP therapy interfaces. Is it feasible to manufacture and use 3D-printed customised oronasal PAP interfaces in clinical practice? Do customised interfaces improve patient comfort and reduce side effects compared to off-the-shelf interfaces? A single-site feasibility study involving 10 healthy and 10 patient participants was undertaken. A 3D facial scan was used to 3D print a mould, injected with medical-grade silicone to create a oronasal customised interface. Participants underwent a 10-minute trial with both off-the-shelf and customised interfaces. Comfort (Visual Analogue Scale), skin reactions, and interface leak (L/min) were measured. Patient participants used the customised interface for five nights at home, with data collected on Apnoea Hypopnoea Index (AHI), interface leak, and PAP therapy concordance. The study recruited 20 participants. Customised oronasal interfaces showed a failure rate in manufacturing (23.75% 3D printing, 50%: silicone injection). Adverse reactions were 10% in the patient study. Comfort scores were similar between interfaces. Interface leak was lower with customised interfaces after five nights. AHI was reduced with customised interfaces, but with a trend towards decreased PAP therapy concordance. The study demonstrated 3D-printed customised oronasal PAP interfaces can be manufactured, with potential benefits of reduced interface leak and AHI. Improvements in manufacturing processes are needed to reduce failure rates. Further research via a randomised controlled trial with a longer duration is warranted.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"293-303"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144745390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feature-driven breast cancer classification via hybrid model using mammogram images. 基于乳房x光图像的混合模型特征驱动的乳腺癌分类。

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-07-26 DOI: 10.1080/03091902.2025.2530938

Latha D U, Mahesh T R

{"title":"Feature-driven breast cancer classification via hybrid model using mammogram images.","authors":"Latha D U, Mahesh T R","doi":"10.1080/03091902.2025.2530938","DOIUrl":"https://doi.org/10.1080/03091902.2025.2530938","url":null,"abstract":"Deep learning's swift development has generated substantial excitement about its application in medical imaging. Machine learning (ML) methods can support radiologists in diagnosing breast cancer (BC) without resorting to invasive procedures. However, traditional ML classifiers require the extraction of detailed hand-crafted features, which is a time-intensive task to achieve accurate results. Hence, this paper proposes a novel Feature-driven Breast Cancer Classification using the Modified Loss and Activation function-assisted LeNet (MLAL) model, named F-BCC-ML. The process of detecting BC using mammogram images comprises several key stages. In the first step, the image undergoes enhancement using the Improved Bilateral Filtering Technique (IBFT), which reduces the noise while conserving critical structural details like edges. Next, the image is subjected to segmentation using SegNet, a deep-learning model designed for semantic segmentation. After segmentation, the next phase is feature extraction, where various features like Weber Local descriptor assisted Local Gabor XOR Pattern (WLD-LGXP) for texture analysis, Median Binary Pattern (MBP), colour features, and deep features are derived from the segmented image. Once the features are extracted, they are fed into the classification stage, where the Modified Loss and Activation function assisted LeNet (MLAL) model, more sophisticated Deep Convolutional Neural Network (DCNN) are used to classify the image as either normal or cancerous. The result is a prediction that indicates whether the breast tissue is benign or shows signs of cancer, helping radiologists make more accurate and informed decisions. The MLAL+DCNN accomplished the maximum accuracy of 0.936, precision of 0.947 and F-measure of 0.942, respectively.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":"49 7","pages":"276-292"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145214200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the accuracy of 3D printing and finite element analysis in transcatheter aortic valveimplantation: a comparative study against post-TAVI CT imaging. 评价3D打印和有限元分析在经导管主动脉瓣置入术中的准确性：与tavi后CT成像的比较研究。

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-08-01 DOI: 10.1080/03091902.2025.2540127

Fabrizio Crascì, Stefano Cannata, Caterina Gandolfo, Salvatore Pasta

{"title":"Evaluating the accuracy of 3D printing and finite element analysis in transcatheter aortic valveimplantation: a comparative study against post-TAVI CT imaging.","authors":"Fabrizio Crascì, Stefano Cannata, Caterina Gandolfo, Salvatore Pasta","doi":"10.1080/03091902.2025.2540127","DOIUrl":"10.1080/03091902.2025.2540127","url":null,"abstract":"Transcatheter aortic valve implantation (TAVI) is now the standard treatment for aortic stenosis, offering a less invasive alternative to surgery. While 3D printing and finite element analysis (FEA) show promise for pre-procedural planning, their accuracy in predicting post-TAVI device geometry remains unclear. This study evaluates the agreement between patient-specific FEA models, 3D-printed phantoms, and post-TAVI CT imaging in replicating implanted device geometry. Ten patients treated with the SAPIEN 3 Ultra (S3) device were analysed using pre- and post-TAVI CT scans. Both FEA simulations and 3D-printed models were assessed for stent deformation and anatomical fit. Agreement was quantified using statistical tools including concordance correlation coefficient (CCC), intraclass correlation coefficient (ICC), and Bland-Altman plots. FEA showed stronger agreement with post-TAVI CT (ICC = 0.614, CCC = 0.479) than 3D printing (ICC = 0.363, CCC = 0.165), which had higher variability. While FEA closely approximated device expansion at the annular level, both methods had limitations due to material and computational assumptions. The study supports the greater reliability of FEA in pre-procedural planning, highlighting the need for further validation and standardisation.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":" ","pages":"315-324"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144765634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the accuracy of smartphone photogrammetry for remote 3D scanning transtibial amputees. 研究智能手机摄影测量对远程3D扫描胫骨截肢者的准确性。

Journal of Medical Engineering and Technology Pub Date : 2025-10-01 Epub Date: 2025-08-10 DOI: 10.1080/03091902.2025.2540096

Sean Cullen, Amir Mohagheghi, Ruth Mackay

引用次数: 0