2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings最新文献

Needle detection by electro-localization for a needle EMG exam robotic simulator 基于电定位的针肌电图检测机器人模拟器

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-07-02 DOI: 10.1109/MeMeA.2015.7145247

Siyu He, J. Gómez-Tames, Wenwei Yu

{"title":"Needle detection by electro-localization for a needle EMG exam robotic simulator","authors":"Siyu He, J. Gómez-Tames, Wenwei Yu","doi":"10.1109/MeMeA.2015.7145247","DOIUrl":"https://doi.org/10.1109/MeMeA.2015.7145247","url":null,"abstract":"Needle EMG (Electromyogram) Exam (NEE) is an important neurological exam, and neurology interns and novice medical need repetitive training to gain the necessary skill to perform the exam. However, until now it has been difficult to reproduce multiple pathological conditions for their training, since in most cases, trainees serve as human subjects for each other. A robotic simulator that could reproduce behavior with various pathological disorders can be of great help for NEE skill training. Needle tip localization is a key component of the robotic simulator, since position-dependent-EMG is the signal source for skilled neurologists to determine the pathological situation. The needle tip localization has been investigated for many medical tests and applications, such as prostate brachytherapy, etc. However, only few studies have been reported on the process of needle operation in muscle based on EMG signals dependent on needle tip position. Our idea is to apply a tissue-like conductive phantom so as to realize both physical sense of insertion, and needle localization for the NEE robotic simulator. A pair of electrodes was designed to generate a near-linear voltage distribution along the depth direction of the tissue-like phantom, by which the inserted needle could be localized. The influence of the shape of phantom and electrodes on detection accuracy were investigated by a set of measurement experiment and a computer simulation. The results showed that, the estimated depth values agreed with that of the computer simulation model, and the curved phantom had a much steeper distribution in the deeper region (better accuracy for needle tip detection).","PeriodicalId":277757,"journal":{"name":"2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings","volume":"1267 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123356008","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: 2

Evaluation of control modes for head motion-based control with motion sensors 基于头部运动的运动传感器控制模式评估

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-07-02 DOI: 10.1109/MeMeA.2015.7145187

Nina Rudigkeit, Marion Gebhard, A. Gräser

{"title":"Evaluation of control modes for head motion-based control with motion sensors","authors":"Nina Rudigkeit, Marion Gebhard, A. Gräser","doi":"10.1109/MeMeA.2015.7145187","DOIUrl":"https://doi.org/10.1109/MeMeA.2015.7145187","url":null,"abstract":"Head-controlled Human-Machine Interfaces play an important role in restoration of the autonomy of severely disabled people, like tetraplegics. In the literature, different control modes to map head movement onto a single degree of freedom of an object to be controlled have been presented. However, the control modes have not been compared with each other under different conditions. With the work presented in this paper, we close this gap by evaluating two of the most promising control modes, namely position mode and velocity mode. These modes were tested under different conditions in order to highlight their advantages and disadvantages and to make suggestions which mode should be used for a particular application. Head movements were measured using a smart 9-axis motion sensor system. The mouse cursor control was considered as an example application for which control modes were compared subjectively as well as objectively. The objective comparison was carried out using a two-dimensional Fitts' Law Test at two different distances to the computer screen. Then, the modes were evaluated subjectively with an evaluation sheet. Position control mode turned out to be significantly faster than the velocity mode. On the other hand, the error rate for position mode increased significantly with the screen distance while velocity mode was insensitive to screen displacements. This was in line with the significantly higher ratings of accurate pointing for velocity mode. Because of this, the velocity mode is the preferred choice for safety-critical applications, such as robot control, while position mode should be used when speed is more important than accuracy, e.g. for cursor control. Therefore, the usefulness of the control modes depends on the application.","PeriodicalId":277757,"journal":{"name":"2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132064702","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: 15

Comparison of vision-based and sensor-based systems for joint angle gait analysis 基于视觉和传感器的关节角步态分析系统的比较

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MeMeA.2015.7145231

Maria Kyrarini, Xingchen Wang, A. Gräser

引用次数: 17

A 7T double-tuned (1H/31P) microstrip surface RF coil for the IMAGO7 MR scanner 用于IMAGO7磁共振扫描仪的7T双调谐(1H/31P)微带表面射频线圈

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MEMEA.2015.7145177

A. Retico, A. Vitacolonna, A. Galante, Tiziana M. Florio, A. Cimini, R. Stara, G. Tiberi, M. Tosetti, N. Fontana, G. Manara, A. Monorchio, M. Alecci

{"title":"A 7T double-tuned (1H/31P) microstrip surface RF coil for the IMAGO7 MR scanner","authors":"A. Retico, A. Vitacolonna, A. Galante, Tiziana M. Florio, A. Cimini, R. Stara, G. Tiberi, M. Tosetti, N. Fontana, G. Manara, A. Monorchio, M. Alecci","doi":"10.1109/MEMEA.2015.7145177","DOIUrl":"https://doi.org/10.1109/MEMEA.2015.7145177","url":null,"abstract":"Ultra-High Field (UHF) (4-9.4T) Magnetic Resonance Imaging (MRI) and Spectroscopy (MRS) are valuable tools in the diagnosis and monitoring of many diseases thanks to the enhanced Signal-to-Noise Ratio (SNR) and spectral/spatial resolution. However, such UHF MR applications require the development and optimization of specially designed Radio Frequency (RF) coils. In this study we report the design, construction, workbench and MR testing of a novel 7T double-tuned (1H/31P) RF surface coil made with microstrip technology. The RF coil is suitable for MRI and MRS human studies of the lower limbs and also of the human head. The double-tuned RF coil was tested at the IMAGO7 Foundation in Pisa (Italy). Ex vivo MR 1H images and 31P spectra obtained with a large size fresh calf veal sample showed an excellent SNR within about 50 mm from the RF surface coil. It is believed that the combined 7T MR 1H/31P will provide benefits in performing clinical follow-up of muscular disorders in young and aging patients. The proposed design can be easily extended to the simultaneous detection of the 1H and other low-gamma nuclei, such as 7Li, 11B, 13C, 17O, 23Na.","PeriodicalId":277757,"journal":{"name":"2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117180444","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: 1

New FEM 3D model for arm-cuff interface simulation 臂袖界面三维有限元模拟新模型

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MeMeA.2015.7145245

R. Vallascas, M. Usai

引用次数: 0

Reproducible measurements of human mesenchymal stem cells counting and proliferation in 3D scaffolds for regenerative medicine 再生医学用3D支架中人间充质干细胞计数和增殖的可重复性测量

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MeMeA.2015.7145259

C. Divieto, M. Sassi

引用次数: 0

Development of intraoperative noninvasive force measuring system during femoral fracture reduction 股骨骨折复位术中无创力测量系统的研制

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MeMeA.2015.7145223

Qing Zhu, Xiaogang Sun, Xingsong Wang, Qingcong Wu, B. Liang

{"title":"Development of intraoperative noninvasive force measuring system during femoral fracture reduction","authors":"Qing Zhu, Xiaogang Sun, Xingsong Wang, Qingcong Wu, B. Liang","doi":"10.1109/MeMeA.2015.7145223","DOIUrl":"https://doi.org/10.1109/MeMeA.2015.7145223","url":null,"abstract":"Fracture reduction is a critical step in minimally invasive surgery of displaced femoral fracture treatment. Skeletal traction and alignment for fracture reduction can be performed individually in the operation, which is a standard procedure for the surgeons in practice. The intraoperative counteracting soft tissue forces during the fracture reduction should be measured precisely for improvement of the operation. In this paper, a set of measurement system was developed to obtain the value of the forces. Forces of skeletal traction and alignment were measured by three individual sensors, and the corresponding results can be recorded instantaneously during the fracture reduction process. According to an experimental test, the maximum alignment force in X-axis and Y-axis direction were 48.4N and 240.1N, respectively. The maximum traction force was 379.7N, occurred because of the slight valgus positioning of the leg to be convenient to insert the intramedullary nail. The highest forces were mostly observed along the shaft axis for skeletal traction. The experimental results show the effectiveness of the proposed measurement system, and indicate the potential application in developing new instruments for the fracture reduction operation.","PeriodicalId":277757,"journal":{"name":"2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131062726","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: 7

A non-invasive method for a quantitative evaluation of muscle involvement in MRI of Neuromuscular Diseases 神经肌肉疾病MRI中定量评估肌肉受累的非侵入性方法

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MEMEA.2015.7145175

M. Fantacci, C. Sottocornola, A. Retico, G. Astrea, R. Battini, M. Tosetti

{"title":"A non-invasive method for a quantitative evaluation of muscle involvement in MRI of Neuromuscular Diseases","authors":"M. Fantacci, C. Sottocornola, A. Retico, G. Astrea, R. Battini, M. Tosetti","doi":"10.1109/MEMEA.2015.7145175","DOIUrl":"https://doi.org/10.1109/MEMEA.2015.7145175","url":null,"abstract":"This work reports a study of Neuromuscular Diseases (NMD) by Magnetic Resonance Imaging as reliable and non invasive instrument for NMD diagnosis and follow up. The evaluation of the images is now only visual, while standardization procedures and quantitative methods could be very useful instruments to optimize the diagnostic performances. We propose a new method to evaluate the fat infiltration in tissues developed and retrospectively applied to images of the human leg. Through a muscle segmentation algorithm on structural T1-weighted magnetic resonance images (MRIs), the estimated non-muscle percentage (eNMP) in the segmented muscle area has been evaluated in healthy subjects as a reference value. A semi-automated procedure allows extending the algorithm to MRIs of NMD patients. A strong correlation has been demonstrated between this index and the disease severity. The final aim is to obtain a quantitative evaluation of fat infiltration percentage and to relate it to the grade of muscle impairment in subjects affected by Neuromuscular Diseases.","PeriodicalId":277757,"journal":{"name":"2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683394","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: 1

Non-invasive assessment of Neuromuscular Disorders by 7 tesla Magnetic Resonance Imaging and Spectroscopy: Dedicated radio-frequency coil development 7特斯拉磁共振成像和光谱学对神经肌肉疾病的无创评估:专用射频线圈的开发

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MEMEA.2015.7145174

A. Retico, R. Stara, M. Fantacci, A. Toncelli, A. Galante, Tiziana M. Florio, M. Alecci, M. Cosottini, G. Astrea, R. Battini, G. Tiberi, M. Costagli, M. Tosetti

{"title":"Non-invasive assessment of Neuromuscular Disorders by 7 tesla Magnetic Resonance Imaging and Spectroscopy: Dedicated radio-frequency coil development","authors":"A. Retico, R. Stara, M. Fantacci, A. Toncelli, A. Galante, Tiziana M. Florio, M. Alecci, M. Cosottini, G. Astrea, R. Battini, G. Tiberi, M. Costagli, M. Tosetti","doi":"10.1109/MEMEA.2015.7145174","DOIUrl":"https://doi.org/10.1109/MEMEA.2015.7145174","url":null,"abstract":"Magnetic Resonance (MR) Imaging and Spectroscopy of the muscle is a valuable tool in the diagnosis and monitoring of Neuromuscular Disorders (NMD). New Ultra-High Field (UHF) 7 T MRI systems, with their enhanced Signal-to-Noise Ratio, may offer increased image quality in terms of spatial resolution and/or shorter scanning time compared to lower field systems. In the study of NMD the new features provided by UHF MR may allow the use of functional techniques to improve biochemical and physiological information of skeletal muscle correlated to the pathogenesis and progression of the muscle involvement. This study reports the recent achievements in muscle imaging and spectroscopy obtained at the first Italian 7 T MR scanner available at the IMAGO7 Foundation (Pisa, Italy). Dedicated radio-frequency coils for proton imaging and phosphorous spectroscopy have been designed, developed and validated in vivo, and are now ready for clinical research studies.","PeriodicalId":277757,"journal":{"name":"2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133247114","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: 3

AvanTomography: A compact module for positron emission mammography AvanTomography:一个紧凑的模块，用于正电子发射乳房x线摄影

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings Pub Date : 2015-05-07 DOI: 10.1109/MeMeA.2015.7145171

Defne Us, Amalia Moreno-Galera, S. Nazari-Farsani, K. Palovuori, Heikki Kosola, Tiziana Zedda, U. Ruotsalainen

引用次数: 0