Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine最新文献_第9页

RETRACTED: Brain tumor diagnosis from MRI based on Amended Water Strider Algorithm. 回收通知：基于修正水黾算法的磁共振成像脑肿瘤诊断。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2023-01-18 DOI: 10.1177/09544119221147102

引用次数: 0

The comparison between various methods of mandibular reconstruction based on finite element analysis. 基于有限元分析的各种下颌骨重建方法的比较。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-02-28 DOI: 10.1177/09544119241232282

Mehdi Parvan, Mohammad Saleh Khaghaninejad, Mohammad Taghi Karimi

{"title":"The comparison between various methods of mandibular reconstruction based on finite element analysis.","authors":"Mehdi Parvan, Mohammad Saleh Khaghaninejad, Mohammad Taghi Karimi","doi":"10.1177/09544119241232282","DOIUrl":"10.1177/09544119241232282","url":null,"abstract":"The Mandible can be damaged by pathological factors, tumors, trauma, infection, and needs a surgical operation for reconstruction and restoring function. There are different methods for the reconstruction of mandible. Based on the surgical approach, primary reconstruction of mandible by reconstruction plate after resection is necessary for maintaining mandibular symmetric and esthetic of the lower third of the face. A finite element model of mandible and masticatory muscles was produced from a normal person (male with 35-year-old). The normal model was resected from the left sixth tooth to the second tooth. The pathological model was reconstructed in different conditions by macro plate. Different conditions were analyzed and compared based on bite force on right fifth tooth, stress developed on screws and macro plate. The finite element analysis results showed that maximum bite force and lower stress on screws were seen in the pathological model (condition 5) when one macro plate and six screws were inserted in the mid-body. The findings showed that the use of two macro plates causes lower stress on it than when we use one. Use of one macro plate and six screws is the best choice in mandibular immobilization which decrease the stress applied on bone and increase the bite force. Because of less stress developed on macro plates and screws, use of two macro plates or one macro plate in mid-body area are also preferred.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"423-429"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139983656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RETRACTED: Optimal skin cancer detection by a combined ENN and Fractional Order Coot Optimization Algorithm. 回收通知：采用 ENN 和分数阶 Coot 优化算法优化皮肤癌检测。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2023-01-18 DOI: 10.1177/09544119221147106

引用次数: 0

Pedicle screw pull-out testing in polyurethane foam blocks: Effect of block orientation and density. 聚氨酯泡沫块中的椎弓根螺钉拔出测试：泡沫块方向和密度的影响

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-03-13 DOI: 10.1177/09544119241236873

Stephen Bennie, James Douglas Crowley, Tian Wang, Matthew Henry Pelletier, William Robert Walsh

{"title":"Pedicle screw pull-out testing in polyurethane foam blocks: Effect of block orientation and density.","authors":"Stephen Bennie, James Douglas Crowley, Tian Wang, Matthew Henry Pelletier, William Robert Walsh","doi":"10.1177/09544119241236873","DOIUrl":"10.1177/09544119241236873","url":null,"abstract":"Synthetic bone models such as polyurethane (PU) foam are a well-established substitute to cadaveric bone for screw pull-out testing; however, little attention has been given to the effect of PU foam anisotropy on orthopaedic implant testing. Compressive and screw pull-out performance in three PU foam densities; 0.16 g/cm3 (PCF 10), 0.32 g/cm3 (PCF 20) and 0.64 g/cm3 (PCF 40) were performed in each of the X, Y or Z orientations. The maximum compressive force, stiffness in the linear region, maximum stress and modulus were determined for all compression tests. Pedicle screws were inserted and pulled out axially to determine maximum pull-out force, energy to failure and stiffness. One-way ANOVA and post hoc tests were used to compare outcome variables between PU foam densities and orientations, respectively. Compression tests demonstrated the maximum force was significantly different between all orientations for PCF 20 (X, Y and Z) while stiffness and maximum stress were different between X versus Y and X versus Z. Maximum pull-out force was significantly different between all orientations for PCF 10 foam. No significant differences were noted for other foam densities. There is potential for screw pull-out testing results to be significantly affected by orientation in lower density PU foams. It is recommended that a single, known orientation of the PU foam block be used for experimental testing.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"455-460"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140120481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RETRACTED: Optimal skin cancer detection by a combined ENN and Fractional Order Coot Optimization Algorithm. 撤回：用ENN和分数阶Coot优化算法优化皮肤癌检测。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2022-07-24 DOI: 10.1177/09544119221113180

Lina Xu, Yujuan Si, Zhiqiang Guo, Dmitry Bokov

引用次数: 0

RETRACTED: Brain tumor diagnosis from MRI based on Amended Water Strider Algorithm. 撤回：基于修正水黾算法的磁共振成像脑肿瘤诊断。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2022-09-29 DOI: 10.1177/09544119221122028

Ming Hu, Yingying Guo, Yu Qi, Jiazhi Cui, Zhuming Cheng, Homayoun Ebrahimian

引用次数: 0

RETRACTED: Lung cancer diagnosis of CT images using metaheuristics and deep learning. 使用元启发式和深度学习的CT图像的癌症诊断。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2022-04-21 DOI: 10.1177/09544119221090725

Qiufang Ma, Giorgos Jimenez

引用次数: 0

Statistical analysis of VEXLPE wear against alumina produced by a new 200-station, multidirectional pin-on-disk device. 对新型 200 工位多向盘上销装置产生的 VEXLPE 对氧化铝的磨损进行统计分析。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-03-05 DOI: 10.1177/09544119241235789

Vesa Saikko

{"title":"Statistical analysis of VEXLPE wear against alumina produced by a new 200-station, multidirectional pin-on-disk device.","authors":"Vesa Saikko","doi":"10.1177/09544119241235789","DOIUrl":"10.1177/09544119241235789","url":null,"abstract":"With low wear rates shown by contemporary bearing materials of total hip prostheses, the standard deviation of wear rate is relatively high. Therefore, large sample sizes are needed for an adequate power of test. Because wear tests take a long time, it is practical to test several samples simultaneously. A new high-capacity, multidirectional wear test device, called the SuperCTPOD-200, was introduced. A 3 million-cycle wear test with an unprecedented sample size of 200 was performed for VEXLPE. The duration of the test was 6 weeks. The wear factor was normally distributed with a mean ± SD of 1.64 × 10-7 mm3/Nm ± 0.22 × 10-7 mm3/Nm (n = 200). The observation that SD was 13.1% of the mean can be useful in power analyses of future tests with other highly cross-linked polyethylenes. Burnishing was the most typical feature on the worn pins, which was in agreement with clinical findings on retrieved acetabular liners. The present study emphasizes statistics that often plays a minor role only in wear studies.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"438-443"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140028743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coronary hemodynamic simulation study. 冠状动脉血液动力学模拟研究。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-03-19 DOI: 10.1177/09544119241231028

Leilei Cheng, Zhenlei Chen, Fengyuan Yang, Rongyue Zheng, Wenming He, Fan Shi, Chang Liu, Fachang Wang, Li Wang, Yanqing Xie, Haoxuan Lu

{"title":"Coronary hemodynamic simulation study.","authors":"Leilei Cheng, Zhenlei Chen, Fengyuan Yang, Rongyue Zheng, Wenming He, Fan Shi, Chang Liu, Fachang Wang, Li Wang, Yanqing Xie, Haoxuan Lu","doi":"10.1177/09544119241231028","DOIUrl":"10.1177/09544119241231028","url":null,"abstract":"In this paper, a two-way fluid-structure coupling model is developed to simulate and analyze the hemodynamic process based on dynamic coronary angiography, and examine the influence of different hemodynamic parameters on coronary arteries in typical coronary stenosis lesions. Using the measured FFR pressure data of a patient, the pressure-time function curve is fitted to ensure the accuracy of the boundary conditions. The average error of the simulation pressure results compared to the test data is 6.74%. In addition, the results related to blood flow, pressure contour and wall shear stress contour in a typical cardiac cycle are obtained by simulation analysis. These results are found to be in good agreement with the laws of the real cardiac cycle, which verifies the rationality of the simulation. In conclusion, based on the modeling and hemodynamic simulation analysis process of dynamic coronary angiography, this paper proposes a method to assist the analysis and evaluation of coronary hemodynamic and functional parameters, which has certain practical significance.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"444-454"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140176097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-vitro external fixation pin-site model proof of concept: A novel approach to studying wound healing in transcutaneous implants 体外固定针部位模型概念验证：研究经皮植入物伤口愈合的新方法

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-03-04 DOI: 10.1177/09544119241234154

Blake McCall, Karan Rana, Kate Sugden, Sarah Junaid

{"title":"In-vitro external fixation pin-site model proof of concept: A novel approach to studying wound healing in transcutaneous implants","authors":"Blake McCall, Karan Rana, Kate Sugden, Sarah Junaid","doi":"10.1177/09544119241234154","DOIUrl":"https://doi.org/10.1177/09544119241234154","url":null,"abstract":"External fixation is an essential surgical technique for treating trauma, limb lengthening and deformity correction, however infection is common, with infection rates ranging from 4.5 to 100% of cases. Throughout the literature researchers and clinicians have highlighted a relationship between excessive movement of the pin and skin and an increase in the patient’s risk of infection, however, currently no studies have addressed this role of pin-movement on pin-site wounds. This preliminary study describes a novel in vitro pin-site model, developed using a full-thickness human skin equivalent (HSE) model in conjunction with a bespoke mechanical system which simulates pin-movement. The effect of pin-movement on the wound healing response of the skin equivalents was assessed by measuring the expression of pro-inflammatory cytokines. Six human skin equivalent models were divided into three test groups: no pin as the control, static pin-site wound and dynamic pin-site wound ( n = 3). On day 3 concentrations of IL-1α and IL-8 showed a significant increase compared to the control when a static fixation pin was implanted into the skin equivalent ( p < 0.05) and ( p < 0.005) respectively. Levels of IL-1α and IL-8 increased further in the dynamic sample compared to the static sample ( p < 0.05) and ( p < 0.0005). This study demonstrates for the first time the application of HSE model to study external-fixation pin-movement in vitro. The results of this study demonstrated pin-movement has a negative effect on soft-tissue wound-healing, supporting the anecdotal evidence reported in the literature, however further analysis of wound heading would be required to verify this hypothesis.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":"57 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140036668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0