Medical Devices-Evidence and Research最新文献_第7页

Cervix Type and Cervical Cancer Classification System Using Deep Learning Techniques. 使用深度学习技术的子宫颈类型和宫颈癌分类系统。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2022-06-16 eCollection Date: 2022-01-01 DOI: 10.2147/MDER.S366303

Lidiya Wubshet Habtemariam, Elbetel Taye Zewde, Gizeaddis Lamesgin Simegn

{"title":"Cervix Type and Cervical Cancer Classification System Using Deep Learning Techniques.","authors":"Lidiya Wubshet Habtemariam, Elbetel Taye Zewde, Gizeaddis Lamesgin Simegn","doi":"10.2147/MDER.S366303","DOIUrl":"https://doi.org/10.2147/MDER.S366303","url":null,"abstract":"Purpose: Cervical cancer is the 4th most common cancer among women, worldwide. Incidence and mortality rates are consistently increasing, especially in developing countries, due to the shortage of screening facilities, limited skilled professionals, and lack of awareness. Cervical cancer is screened using visual inspection after application of acetic acid (VIA), papanicolaou (Pap) test, human papillomavirus (HPV) test and histopathology test. Inter- and intra-observer variability may occur during the manual diagnosis procedure, resulting in misdiagnosis. The purpose of this study was to develop an integrated and robust system for automatic cervix type and cervical cancer classification using deep learning techniques.Methods: 4005 colposcopy images and 915 histopathology images were collected from different local health facilities and online public datasets. Different pre-trained models were trained and compared for cervix type classification. Prior to classification, the region of interest (ROI) was extracted from cervix images by training and validating a lightweight MobileNetv2-YOLOv3 model to detect the transformation region. The extracted cervix images were then fed to the EffecientNetb0 model for cervix type classification. For cervical cancer classification, an EffecientNetB0 pre-trained model was trained and validated using histogram matched histopathological images.Results: Mean average precision (mAP) of 99.88% for the region of interest (ROI) extraction, and test accuracies of 96.84% and 94.5% were achieved for the cervix type and cervical cancer classification, respectively.Conclusion: The experimental results demonstrate that the proposed system can be used as a decision support tool in the diagnosis of cervical cancer, especially in low resources settings, where the expertise and the means are limited.","PeriodicalId":47140,"journal":{"name":"Medical Devices-Evidence and Research","volume":" ","pages":"163-176"},"PeriodicalIF":1.3,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e3/52/mder-15-163.PMC9208738.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40224766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Safety and Efficacy of Inflatable Penile Prostheses for the Treatment of Erectile Dysfunction: Evidence to Date. 充气阴茎假体治疗勃起功能障碍的安全性和有效性:迄今为止的证据。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2022-02-10 eCollection Date: 2022-01-01 DOI: 10.2147/MDER.S251364

Vinson M Wang, Laurence A Levine

引用次数: 5

Assessment of an Articulating Laparoscopic Needle Holder (FlexDex™) Compared to a Conventional Rigid Needle Holder in 2-Dimension Vision Amongst Novices: A Randomised Controlled Study. 评估关节腹腔镜针架(FlexDex™)与传统刚性针架在新手中的二维视觉:一项随机对照研究。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2022-02-04 eCollection Date: 2022-01-01 DOI: 10.2147/MDER.S345140

Nima Motahariasl, Sayed Borna Farzaneh, Sina Motahariasl, Ilya Kokotkin, Sara Sousi, Alexander Zargaran, David Zargaran, Bijendra Patel

{"title":"Assessment of an Articulating Laparoscopic Needle Holder (FlexDex™) Compared to a Conventional Rigid Needle Holder in 2-Dimension Vision Amongst Novices: A Randomised Controlled Study.","authors":"Nima Motahariasl, Sayed Borna Farzaneh, Sina Motahariasl, Ilya Kokotkin, Sara Sousi, Alexander Zargaran, David Zargaran, Bijendra Patel","doi":"10.2147/MDER.S345140","DOIUrl":"https://doi.org/10.2147/MDER.S345140","url":null,"abstract":"Aim: This study aims to compare novice performance of advanced bimanual laparoscopic skills using an articulating laparoscopic device (FlexDex™) compared to a standard rigid needle holder amongst surgical novices in 2-dimension (2D) visualisation.Methods: In this prospective randomised trial, novices (n = 40) without laparoscopic experience were recruited and randomised into two groups, which used either traditional rigid needle holders or the FlexDex™. Both groups performed 10 repetitions of a validated assessment task. Times taken and error rates were recorded, and results were evaluated based on completion times, error rates, and learning curves.Results: The intervention group that used the FlexDex™ completed 10 attempts of the standardised laparoscopic task slower than the control group that used traditional rigid needle holder (415 s versus 267 s taken for the first three attempts and 283 s versus 187 s taken for the last three attempts, respectively). The difference in average time for the first three and last three attempts reached statistical significance (P < 0.001). Furthermore, the intervention group demonstrated a higher error rate when compared to the control group (9.3 versus 6.2 errors per individual).Conclusion: When compared to the FlexDex™, the traditional rigid needle holder was observed to be superior in task performance speed, leading to shorter completion times and quicker learning effect, as well as fewer errors.Key statement: Traditional rigid needle holder leads to faster task completion times and lower error rates when compared with an articulating laparoscopic needle holder in 2D vision.","PeriodicalId":47140,"journal":{"name":"Medical Devices-Evidence and Research","volume":" ","pages":"15-25"},"PeriodicalIF":1.3,"publicationDate":"2022-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/57/bc/mder-15-15.PMC8824294.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39620375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Measure of Acetabular Cup Inclination and Anteversion During Total Hip Arthroplasty. 全髋关节置换术中髋臼杯倾斜度和反转的新测量方法

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2022-01-28 eCollection Date: 2022-01-01 DOI: 10.2147/MDER.S339669

William L Walter, Neri A Baker, Daniel Marsden-Jones, Ameneh Sadeghpour

引用次数: 0

Day-to-day repeatability of the Pulse Time Index of Norm. 标准脉冲时间指数的日常重复性。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2014-02-27 eCollection Date: 2014-01-01 DOI: 10.2147/MDER.S58507

Igor N Posokhov, Aleksandra O Konradi, Eugeny V Shlyakhto, Oleg V Mamontov, Artemy V Orlov, Anatoly N Rogoza

{"title":"Day-to-day repeatability of the Pulse Time Index of Norm.","authors":"Igor N Posokhov, Aleksandra O Konradi, Eugeny V Shlyakhto, Oleg V Mamontov, Artemy V Orlov, Anatoly N Rogoza","doi":"10.2147/MDER.S58507","DOIUrl":"https://doi.org/10.2147/MDER.S58507","url":null,"abstract":"The pulse wave velocity (PWV) threshold for hypertensive target organ damage is presently set at 10 meters per second. New 24-hour monitors (eg, BPLab® and Vasotens®) provide several PWV measurements over a period of 24-72 hours. A new parameter, ie, the Pulse Time Index of Norm (PTIN), can be calculated from these data. The PTIN is defined as the percentage of a 24-hour period during which the PWV does not exceed 10 meters per second. The aim of the present study was to test the new PTIN for clinical feasibility using day-to-day repeatability analysis. Oscillometrically generated waveform files (n=85), which were previously used for research studies, were reanalyzed using the new 2013 version software of the Vasotens technology program, which enables calculation of PTIN. The intraclass correlation coefficient was 0.98 and Cronbach's alpha was 0.97, indicating that the PTIN has excellent day-to-day repeatability and internal consistency. The present results show adequate repeatability, and PTIN assessment using the Vasotens technology appears to be feasible. ","PeriodicalId":47140,"journal":{"name":"Medical Devices-Evidence and Research","volume":" ","pages":"29-33"},"PeriodicalIF":1.3,"publicationDate":"2014-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/MDER.S58507","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40287622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Biodegradable polymer Biolimus-eluting stent (Nobori®) for the treatment of coronary artery lesions: review of concept and clinical results. 用于治疗冠状动脉病变的可生物降解聚合物biolimus洗脱支架(Nobori®):概念和临床结果的回顾

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2014-02-27 eCollection Date: 2014-01-01 DOI: 10.2147/MDER.S44051

Guillaume Schurtz, Cédric Delhaye, Christopher Hurt, Henri Thieuleux, Gilles Lemesle

引用次数: 13

Application of dynamic indocyanine green perfusion imaging for evaluation of vasoactive effect of acupuncture: a preliminary follow-up study on normal healthy volunteers. 应用动态吲哚菁绿灌注显像评价针刺血管活性:对正常健康志愿者的初步随访研究

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2014-02-20 eCollection Date: 2014-01-01 DOI: 10.2147/MDER.S56716

Yuri An, Jong Wook Jeon, Kihwan Kwon, Chulhee Choi

{"title":"Application of dynamic indocyanine green perfusion imaging for evaluation of vasoactive effect of acupuncture: a preliminary follow-up study on normal healthy volunteers.","authors":"Yuri An, Jong Wook Jeon, Kihwan Kwon, Chulhee Choi","doi":"10.2147/MDER.S56716","DOIUrl":"https://doi.org/10.2147/MDER.S56716","url":null,"abstract":"Background: Even though acupuncture has long been used for alleviating symptoms related to vascular insufficiency, the clinical effect of acupuncture on peripheral circulation has not been fully confirmed. In this study, we investigated whether a near-infrared optical imaging-based method can be used to evaluate the efficacy of the acupuncture procedure to induce changes in peripheral tissue perfusion.Methods: Two normal, healthy controls were treated with acupuncture on two acupoints (LI-4 and SI-3) three times within 1 week. At the first and third visits, participants were examined using indocyanine green (ICG) perfusion imaging before and 10 minutes after the acupuncture procedure. Blood perfusion of the hands was determined after intravenous bolus injection of ICG and dynamic analysis of the fluorescence signals by near-infrared imaging system.Results: The blood perfusion rates of the hands were markedly increased immediately after acupuncture at the first trial in both cases. The baseline perfusion rates of the hands measured at the third visit were higher compared to the original basal level in one case; there was no difference in baseline perfusion rates of both hands in another case. In both cases, there was no acute effect of acupuncture on hand perfusion at the third trial.Conclusions: These results collectively suggest a potential of the ICG perfusion imaging as an effective evaluation tool to validate the vasoactive effect of acupuncture.","PeriodicalId":47140,"journal":{"name":"Medical Devices-Evidence and Research","volume":" ","pages":"17-21"},"PeriodicalIF":1.3,"publicationDate":"2014-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/MDER.S56716","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40287621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Pulse wave velocity 24-hour monitoring with one-site measurements by oscillometry. 脉搏波速24小时监测，单点测量振荡法。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2013-01-01 Epub Date: 2013-02-19 DOI: 10.2147/MDER.S42082

Igor N Posokhov

引用次数: 22

Actual performance of mechanical ventilators in ICU: a multicentric quality control study. ICU机械呼吸机的实际性能:一项多中心质量控制研究。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2012-01-01 Epub Date: 2012-12-20 DOI: 10.2147/MDER.S35864

Leonardo Govoni, Raffaele L Dellaca', Oscar Peñuelas, Giacomo Bellani, Antonio Artigas, Miquel Ferrer, Daniel Navajas, Antonio Pedotti, Ramon Farré

{"title":"Actual performance of mechanical ventilators in ICU: a multicentric quality control study.","authors":"Leonardo Govoni, Raffaele L Dellaca', Oscar Peñuelas, Giacomo Bellani, Antonio Artigas, Miquel Ferrer, Daniel Navajas, Antonio Pedotti, Ramon Farré","doi":"10.2147/MDER.S35864","DOIUrl":"https://doi.org/10.2147/MDER.S35864","url":null,"abstract":"Even if the performance of a given ventilator has been evaluated in the laboratory under very well controlled conditions, inappropriate maintenance and lack of long-term stability and accuracy of the ventilator sensors may lead to ventilation errors in actual clinical practice. The aim of this study was to evaluate the actual performances of ventilators during clinical routines. A resistance (7.69 cmH(2)O/L/s) - elastance (100 mL/cmH(2)O) test lung equipped with pressure, flow, and oxygen concentration sensors was connected to the Y-piece of all the mechanical ventilators available for patients in four intensive care units (ICUs; n = 66). Ventilators were set to volume-controlled ventilation with tidal volume = 600 mL, respiratory rate = 20 breaths/minute, positive end-expiratory pressure (PEEP) = 8 cmH(2)O, and oxygen fraction = 0.5. The signals from the sensors were recorded to compute the ventilation parameters. The average ± standard deviation and range (min-max) of the ventilatory parameters were the following: inspired tidal volume = 607 ± 36 (530-723) mL, expired tidal volume = 608 ± 36 (530-728) mL, peak pressure = 20.8 ± 2.3 (17.2-25.9) cmH(2)O, respiratory rate = 20.09 ± 0.35 (19.5-21.6) breaths/minute, PEEP = 8.43 ± 0.57 (7.26-10.8) cmH(2)O, oxygen fraction = 0.49 ± 0.014 (0.41-0.53). The more error-prone parameters were the ones related to the measure of flow. In several cases, the actual delivered mechanical ventilation was considerably different from the set one, suggesting the need for improving quality control procedures for these machines.","PeriodicalId":47140,"journal":{"name":"Medical Devices-Evidence and Research","volume":" ","pages":"111-9"},"PeriodicalIF":1.3,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/MDER.S35864","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40213637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Evaluation of long-acting somatostatin analog injection devices by nurses: a quantitative study. 护士对长效生长抑素模拟物注射装置的评价:定量研究。

IF 1.3

Medical Devices-Evidence and Research Pub Date : 2012-01-01 Epub Date: 2012-12-14 DOI: 10.2147/MDER.S37831

Daphne T Adelman, Andrea Burgess, Philippa R Davies

{"title":"Evaluation of long-acting somatostatin analog injection devices by nurses: a quantitative study.","authors":"Daphne T Adelman, Andrea Burgess, Philippa R Davies","doi":"10.2147/MDER.S37831","DOIUrl":"https://doi.org/10.2147/MDER.S37831","url":null,"abstract":"The somatostatin analogs (SSAs) lanreotide Autogel/Depot and octreotide long-acting release are used to treat acromegaly and neuroendocrine tumors. The present study evaluated opinions on SSA injection devices, including a recently approved lanreotide new device (lanreotide-ND), among nurses in Europe and the USA. Nurses injecting SSAs for at least three patients per year (n = 77) were interviewed regarding SSA devices. Device attributes were rated via questionnaire; nurses were then timed administering test injections with lanreotide-ND and octreotide long-acting release. The most important delivery system attributes were easy/convenient preparation and injection (ranked in the top five by 70% of nurses), low clogging risk (58%), and high product efficacy (55%). Compared with the octreotide long-acting release device, lanreotide-ND scored higher on 15/16 attributes, had shorter mean preparation and administration time (329 versus 66 seconds, respectively; P ≤ 0.01) and a higher overall preference score (70 versus 114, respectively; P ≤ 0.01). The five most important lanreotide-ND attributes were: prefilled device, confidence a full dose was delivered, low clogging risk, easy/convenient preparation and injection, and fast administration. These device features could lead to improvements in clinical practice and benefit patients/caregivers who administer SSAs at home.","PeriodicalId":47140,"journal":{"name":"Medical Devices-Evidence and Research","volume":" ","pages":"103-9"},"PeriodicalIF":1.3,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/MDER.S37831","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40213635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30