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[Brief Analysis of Clinical Evaluation Concerns of Personalized Abutments and Abutment Crown Bridge Products]. [简析个性化基台和基冠桥产品的临床评估问题】。］
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230388
Weilu Cheng, Yidan Zhang, Li Ji, Jiaying Guo, Qing Zhang, Yinghui Liu
{"title":"[Brief Analysis of Clinical Evaluation Concerns of Personalized Abutments and Abutment Crown Bridge Products].","authors":"Weilu Cheng, Yidan Zhang, Li Ji, Jiaying Guo, Qing Zhang, Yinghui Liu","doi":"10.12455/j.issn.1671-7104.230388","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230388","url":null,"abstract":"<p><strong>Objective: </strong>The applications of personalized abutments and abutment crown bridge products have increased year by year, but there is no clear requirement for clinical evaluation of the same variety of such products. This study mainly introduces the clinical evaluation concerns of personalized abutments and abutment crown bridge products, in order to provide reference for the declaration and registration of such products.</p><p><strong>Methods: </strong>The clinical evaluation of personalized abutments and crown bridge products are summarized, and the research content of clinical evaluation is clarified.</p><p><strong>Results: </strong>The clinical evaluation requirements that need to be considered by enterprises are introduced.</p><p><strong>Conclusion: </strong>Personalized abutment and abutment crown bridge products can refer to this study when they are launched in China, mainly using <i>in vitro</i> performance comparison tests for equivalence verification.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140860456","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
[Development and Application of Deep Learning-Based Model for Quality Control of Children Pelvic X-Ray Images]. [基于深度学习的儿童骨盆 X 光图像质量控制模型的开发与应用]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.240010
Zhichen Liu, Jincong Lin, Kunjie Xie, Jia Sha, Xu Chen, Wei Lei, Luyu Huang, Yabo Yan
{"title":"[Development and Application of Deep Learning-Based Model for Quality Control of Children Pelvic X-Ray Images].","authors":"Zhichen Liu, Jincong Lin, Kunjie Xie, Jia Sha, Xu Chen, Wei Lei, Luyu Huang, Yabo Yan","doi":"10.12455/j.issn.1671-7104.240010","DOIUrl":"10.12455/j.issn.1671-7104.240010","url":null,"abstract":"<p><strong>Objective: </strong>A deep learning-based method for evaluating the quality of pediatric pelvic X-ray images is proposed to construct a diagnostic model and verify its clinical feasibility.</p><p><strong>Methods: </strong>Three thousand two hundred and forty-seven children with anteroposteric pelvic radiographs are retrospectively collected and randomly divided into training datasets, validation datasets and test datasets. Artificial intelligence model is conducted to evaluate the reliability of quality control model.</p><p><strong>Results: </strong>The diagnostic accuracy, area under ROC curve, sensitivity and specificity of the model are 99.4%, 0.993, 98.6% and 100.0%, respectively. The 95% consistency limit of the pelvic tilt index of the model is -0.052-0.072. The 95% consistency threshold of pelvic rotation index is -0.088-0.055.</p><p><strong>Conclusion: </strong>This is the first attempt to apply AI algorithm to the quality assessment of children's pelvic radiographs, and has significantly improved the diagnosis and treatment status of DDH in children.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140872964","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
[Research on Dry Chemical Detection TechnologyBased on Reflectance Photometry]. [基于反射光度法的干化学物质检测技术研究]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230331
Tanghong Lu, Juhua Huang, Chunjiang Huang, Shuaiding Feng, Lingfeng You
{"title":"[Research on Dry Chemical Detection TechnologyBased on Reflectance Photometry].","authors":"Tanghong Lu, Juhua Huang, Chunjiang Huang, Shuaiding Feng, Lingfeng You","doi":"10.12455/j.issn.1671-7104.230331","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230331","url":null,"abstract":"<p><p>In response to the issues of insufficient stability and accuracy in dry chemical detection using reflectance photometry, caused by the divergence and multiple internal reflections of the reflected light signal from the sample and the multilayer dry film test strip, a dry chemical reflectance photometry detection system based on an integrating sphere is designed. Firstly, an integrating sphere device is incorporated to reduce signal divergence and loss, ensuring even detection of the sample's reflected light signal and improving detection stability. Secondly, Light Tools optical simulation analysis is performed, and an integrating sphere detection model is established. Thirdly, the Williams-Clapper equation is employed to correct the error in reflectance density caused by multiple internal reflections, enhancing detection accuracy. Experimental validation demonstrates that the developed integrating sphere-based dry chemical reflectance photometry detection system improves the stability and accuracy of the detection system.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873459","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
[Thoughts on the Biological Evaluation of Biodegradable Cardiovascular Implants]. [关于生物可降解心血管植入物生物学评估的思考]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230341
Yun Xu, Maobo Cheng, Peng Zhao
{"title":"[Thoughts on the Biological Evaluation of Biodegradable Cardiovascular Implants].","authors":"Yun Xu, Maobo Cheng, Peng Zhao","doi":"10.12455/j.issn.1671-7104.230341","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230341","url":null,"abstract":"<p><p>In recent years, new degradable materials have been applied to cardiovascular implants. Cardiovascular implants with different physicochemical properties and degradation properties have special endpoints for their biological evaluation. In this study, the end points of biological evaluation of degradable cardiovascular implants were reviewed by taking vascular stents and occluders as examples.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140867224","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
[Research Progress on Influence of Centrifugal Blood Pump on Blood Injury]. [离心血泵对血液损伤影响的研究进展]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230457
Chenghong Ye, Yanguo Zou, Jie Li, Yuxi Yang, Yongqing Wang
{"title":"[Research Progress on Influence of Centrifugal Blood Pump on Blood Injury].","authors":"Chenghong Ye, Yanguo Zou, Jie Li, Yuxi Yang, Yongqing Wang","doi":"10.12455/j.issn.1671-7104.230457","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230457","url":null,"abstract":"<p><p>Centrifugal blood pumps drive blood flow by regulating blood flow rate, and have been widely used in clinical applications, including extracorporeal membrane oxygenation (ECMO), cardiopulmonary bypass (CPB), and extracorporeal circulation carbon dioxide removal (ECCO<sub>2</sub>R). However, because different structures and different forms of centrifugal pumps have different requirements for blood extracorporeal circulation in clinical application scenarios, blood pumps face different application conditions in clinical use. In this study, the effects of different structures of centrifugal pumps and different working conditions on blood damage are summarized for reference by relevant institutions and R&D personnel.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140872901","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
[Deep Learning-Based Key Frame Recognition Algorithm for Adrenal Vascular in X-Ray Imaging]. [基于深度学习的 X 射线成像肾上腺血管关键帧识别算法]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.240040
Huimin Tao, Miao Huang, Cong Liu, Yongtian Liu, Zhihua Hu, Lili Tao, Shuping Zhang
{"title":"[Deep Learning-Based Key Frame Recognition Algorithm for Adrenal Vascular in X-Ray Imaging].","authors":"Huimin Tao, Miao Huang, Cong Liu, Yongtian Liu, Zhihua Hu, Lili Tao, Shuping Zhang","doi":"10.12455/j.issn.1671-7104.240040","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.240040","url":null,"abstract":"<p><p>Adrenal vein sampling is required for the staging diagnosis of primary aldosteronism, and the frames in which the adrenal veins are presented are called key frames. Currently, the selection of key frames relies on the doctor's visual judgement which is time-consuming and laborious. This study proposes a key frame recognition algorithm based on deep learning. Firstly, wavelet denoising and multi-scale vessel-enhanced filtering are used to preserve the morphological features of the adrenal veins. Furthermore, by incorporating the self-attention mechanism, an improved recognition model called ResNet50-SA is obtained. Compared with commonly used transfer learning, the new model achieves 97.11% in accuracy, precision, recall, <i>F</i><sub>1</sub>, and AUC, which is superior to other models and can help clinicians quickly identify key frames in adrenal veins.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140872628","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
[Design of Pulse and Respiratory Signals Detection System]. [脉搏和呼吸信号检测系统的设计]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230288
Rui Zhang, Lidong Xing, Xiao Zhang, Zhiyu Qian
{"title":"[Design of Pulse and Respiratory Signals Detection System].","authors":"Rui Zhang, Lidong Xing, Xiao Zhang, Zhiyu Qian","doi":"10.12455/j.issn.1671-7104.230288","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230288","url":null,"abstract":"<p><p>A pulse and respiration synchronous detection system is designed to explore the changes of physiological signals in different situations. The system obtains the corresponding signal through STM32 control pulse and respiratory acquisition circuit, calculates and displays real-time parameters such as heart rate and respiratory rate, and transmits the data to the upper computer for storage in the database. The experimental test results show that the system can monitor pulse and respiratory waveform in different situations, and the waveform is in good condition. Compared with medical pulse oximeter, the error of measured heart rate and blood oxygen concentration is less than 3%, and the error of respiratory rate is less than 5% compared with the actual value, which verifies the accuracy of system signal acquisition. The system is small in size, low in cost, and comfortable to wear, and can be applied in experimental research related to pulse and respiratory signals.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873783","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
[Development of Wireless Wearable Sleep Monitoring System Based on EEG Signal]. [基于脑电信号的无线可穿戴睡眠监测系统的开发]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230414
Fuhao Kang, Jieying Shan, Zexi Li, Yanan Liu, Jilun Ye, Xu Zhang, Chunsheng Liu, Fan Wang
{"title":"[Development of Wireless Wearable Sleep Monitoring System Based on EEG Signal].","authors":"Fuhao Kang, Jieying Shan, Zexi Li, Yanan Liu, Jilun Ye, Xu Zhang, Chunsheng Liu, Fan Wang","doi":"10.12455/j.issn.1671-7104.230414","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230414","url":null,"abstract":"<p><p>A wireless wearable sleep monitoring system based on EEG signals is developed. The collected EEG signals are wirelessly sent to the PC or mobile phone Bluetooth APP for real-time display. The system is small in size, low in power consumption, and light in weight. It can be worn on the patient's forehead and is comfortable. It can be applied to home sleep monitoring scenarios and has good application value. The key performance indicators of the system are compared with the industry-related medical device measurement standards, and the measurement results are better than the special standards.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140874123","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
[Research Progress on Localization of Pulmonary Nodules]. [肺结节定位研究进展]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230226
Jiangnan Wang, Weiya Yan, Xuebing Ding
{"title":"[Research Progress on Localization of Pulmonary Nodules].","authors":"Jiangnan Wang, Weiya Yan, Xuebing Ding","doi":"10.12455/j.issn.1671-7104.230226","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230226","url":null,"abstract":"<p><p>With the widespread adoption of low-dose computed tomography (LDCT) and advancements in computed tomography image resolution, the detection rate of pulmonary nodules, especially smaller ones, has significantly improved. The risk of developing malignant tumors increases with the pulmonary nodule diameter. Video-assisted thoracoscopic surgery (VATS) stands out as the preferred surgical method. The accurate localization of pulmonary nodules is crucial for the success of VATS and remains a significant challenge for thoracic surgeons. Currently, commonly employed localization methods include CT-guided percutaneous positioning, bronchoscope-guided positioning, intraoperative ultrasound positioning, augmented reality (AR), and 3D print-assisted positioning. This review explores recent research progress, highlights the strengths and weaknesses of various pulmonary nodule localization methods. The aim is to provide valuable insights for clinical applications and guide future developments in this field.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140870372","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
[Research Photon Energy Spectrum of Medical Linear Accelerator by Monte Carlo Method]. [用蒙特卡罗方法研究医用直线加速器的光子能量谱]。
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-03-30 DOI: 10.12455/j.issn.1671-7104.230387
Yun Xu, Yu Zhao, Zikang Li, Junxiang Wu
{"title":"[Research Photon Energy Spectrum of Medical Linear Accelerator by Monte Carlo Method].","authors":"Yun Xu, Yu Zhao, Zikang Li, Junxiang Wu","doi":"10.12455/j.issn.1671-7104.230387","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230387","url":null,"abstract":"<p><strong>Objective: </strong>The distribution of the photon energy spectrum in isocenter plane of the medical linear accelerator and the influence of secondary collimator on the photon energy spectrum are studied. <b>Methods</b> Use the BEAMnrc program to simulate the transmission of the 6 MeV electrons and photons in 5 cm×5 cm,10 cm×10 cm,15 cm×15 cm and 20 cm×20 cm fields in treatment head of the medical linear accelerator, where a phase space file was set up at the isocenter plane to record the particle information passing through this plane. The BEAMdp program is used to analyze the phase space file, in order to obtain the distribution of the photon energy spectrum in isocenter plane and the influence of secondary collimator on the photon energy spectrum.</p><p><strong>Results: </strong>By analyzing the photon energy spectrum of a medical linear accelerator with a nominal energy of 6 MV, it is found that the secondary collimator has little effect on the photon energy spectrum; different fields have different photon energy spectrum distributions; the photon energy spectrum in different central regions of the same field have the same normalized distribution.</p><p><strong>Conclusion: </strong>In the dose calculation of radiation therapy, the influence of photon energy spectrum should be carefully considered.</p>","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140853528","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
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