Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)最新文献_第9页

Signal integration and tele-cooperation in a critical care unit 重症监护病房的信号集成与远程合作

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756509

K. Diamantaras, E. Bacharakis, I. Kamilatos, M. Strintzis, N. Maglaveras, A. Armaganidis

{"title":"Signal integration and tele-cooperation in a critical care unit","authors":"K. Diamantaras, E. Bacharakis, I. Kamilatos, M. Strintzis, N. Maglaveras, A. Armaganidis","doi":"10.1109/IEMBS.1997.756509","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756509","url":null,"abstract":"The data related to a patient in a critical care unit (CCU) consists of biosignals obtained from devices such as the monitor, the respirator and other monitoring equipment. In addition to this data, an image archive is maintained in the radiology department (RD), composed mainly of CT and MRI scans. The major tasks of a CCU information system are to acquire the necessary biosignals from a variety of instruments, to integrate them into a single environment and to communicate with the RD image archiving system in an efficient manner that allows the doctors to collaborate, minimizing the virtual distance between the CCU and the RD. Signal integration specifically in the CCU amounts to a number of smaller subtasks: (a) signal processing for computing useful derived parameters which are not immediately available from the data, (b) smart alarms which enhance the reliability and sensitivity of the available alarms by combining signals from different sources, and (c) the potential of archiving the signals and computing long-term trends which are particularly useful in clinical practice.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131630658","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

Selective activation of the urinary bladder with quasi-trapezoidal pulses in sacral anterior root stimulation in the dog 犬骶前根刺激中准梯形脉冲对膀胱的选择性激活

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757079

T. Stieglitz, C. Seif, S. Schumacher, S. Bross, K. Juenemann, J. Meyer

{"title":"Selective activation of the urinary bladder with quasi-trapezoidal pulses in sacral anterior root stimulation in the dog","authors":"T. Stieglitz, C. Seif, S. Schumacher, S. Bross, K. Juenemann, J. Meyer","doi":"10.1109/IEMBS.1997.757079","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.757079","url":null,"abstract":"Experiments have been performed to receive a selective stimulation of the urinary bladder in sacral anterior root stimulation in the foxhound dog. A computer controlled stimulator system has been developed to create arbitrary shaped current pulses using a commercially available universal source. Different monophasic and biphasic quasitrapezoidal (QT-) pulses have been created to investigate the influence of slew rates and pulse shapes on the selectivity of myelinated and unmyelinated nerve fibers. Following bilateral deafferentation of the sacral roots S1 to S3, the anterior roots S2 were placed into tripolar book electrodes with one cathode and two adjacent anodes. The pressure of the urethral sphincter and the detrusor were monitored during experiments by urodynamic investigation (microtip-catheter). Short stimulation pulse trains were applied and the sphincter response was monitored at six different pulse shapes. At some pulse shapes, an anodal block of the urethral sphincter was observed. In these cases longer pulse trains were applied to monitor the bladder response. A positive pressure difference could be observed in mono- and biphasic QT-pulses. In one case, a non-intermitting voiding in continuous bilateral stimulation of the anterior roots S2 was seen.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132943233","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 radiosensitive gels and phantoms for irradiation assessment using MRI measurement: case of glottic cancer 核磁共振成像测量辐照评估用放射敏感凝胶和显像的设计:声门癌一例

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757648

I. Rousselle, J. Rousseau, B. Castelain, T. Sarrazin, X. Marchandise, D. Gibon

{"title":"Design of radiosensitive gels and phantoms for irradiation assessment using MRI measurement: case of glottic cancer","authors":"I. Rousselle, J. Rousseau, B. Castelain, T. Sarrazin, X. Marchandise, D. Gibon","doi":"10.1109/IEMBS.1997.757648","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.757648","url":null,"abstract":"Chemical dosimetry is a technique allowing tridimensional assessment of dose in radiotherapy. Magnetic resonance imaging provides 3D dose mapping of irradiated gels. Those gels are composed of an aqueous gel matrix containing radiosensitive compounds such as ferrous ions that are radio-oxidized or vinyl monomers that polymerize. There are specific requirements about soft-tissue equivalence that don't necessarily matched with MRI requirements, The differences between the parameters defining soft-tissue equivalence for the different gels are small enough to choose a gel not considering its tissue equivalence but considering its MRI T/sub 1/ or T/sub 2/ sensitivities, its linearity vs dose, etc. An important parameter to consider is the phantom morphology. Use of radiosensitive gels is interesting to simulate the irradiation of a part of the body with tissue/air interfaces and to study the 3D dose mapping in the case of a glottic tumor for example. Thus, it will be much easier to make that phantom if the gel is not oxygen sensitive.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132809860","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

Iterative algorithm for 3D EIT 三维EIT的迭代算法

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.754571

S. Semenov, A. Bulyshev, A. E. Souvorov, A. Nazarov, R. H. Svenson, V. Posukh, Y. Sizov, G. Tatsis

引用次数: 2

Spectral characterization of neonatal arterial blood pressure associated with surfactant therapy for respiratory distress syndrome 新生儿动脉血压与呼吸窘迫综合征表面活性剂治疗相关的频谱特征

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756550

A. Talati, M. Daley, C. Leffler, H. Bada

{"title":"Spectral characterization of neonatal arterial blood pressure associated with surfactant therapy for respiratory distress syndrome","authors":"A. Talati, M. Daley, C. Leffler, H. Bada","doi":"10.1109/IEMBS.1997.756550","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756550","url":null,"abstract":"The authors' goal was to characterize the effect of surfactant instillation on arterial blood pressure in premature infants with respiratory distress syndrome to develop prognostic indicators of short term outcome. Twelve infants with birth weights between 500 to 2000 grams were enrolled. All infants received the first dose of surfactant within the first six hours of life. Arterial pressure signals were recorded 30 min. Before and after surfactant administration and later analyzed for spectral composition. The spectral power at the frequency of positive pressure ventilation markedly increased after surfactant therapy in seven patients who survived with the majority demonstrating a significant increase in PaO/sub 2/. In the authors' other five patients spectral power decreased or remained unchanged; these patients died within the first week of life. These findings suggest that the change in the direction of spectral power at the ventilator frequency following the first dose of surfactant may have prognostic significance in infants with respiratory distress syndrome.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131159731","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

Mapping knee torques evoked by intraspinal microstimulation 绘制椎管内微刺激引起的膝关节扭矩

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.758721

W. Grill, Bao-zhen Wang

引用次数: 3

Automatic detection of PVCs using autoregressive models 基于自回归模型的室性早搏自动检测

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.754465

J. Paul, M. Reddy, V.J. Kumar

引用次数: 11

Colour segmentation for lesion classification 病灶分类的颜色分割

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757677

A. Round, A. Duller, P. Fish

引用次数: 25

A comparison of neural spike classification techniques [caterpillar taste organs application] 神经脉冲分类技术的比较[毛虫味觉器官的应用]

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756540

J. Stitt, R. Gaumond, J. L. Frazier, F. Hanson

引用次数: 4

Two automatic training-based forced calibration algorithms for left ventricle boundary estimation in cardiac images 两种基于自动训练的心脏图像左心室边界估计强制校准算法

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757665

J. Suri, R. Haralick, F. Sheehan

{"title":"Two automatic training-based forced calibration algorithms for left ventricle boundary estimation in cardiac images","authors":"J. Suri, R. Haralick, F. Sheehan","doi":"10.1109/IEMBS.1997.757665","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.757665","url":null,"abstract":"Pixel classification algorithms based on temporal information, edge detection algorithms based on spatial information when used in combination are not sufficient for boundary estimation of the left ventricle (LV) in cardiovascular X-ray images. Poor contrast in the LV apex zone the fuzzy region in the inferior wall due to the overlap of the LV with the diaphragm, the inherent noise, and the variability of the modulation transfer function in X-ray imaging systems causes great difficulties in LV segmentation. To overcome the above problems, calibration algorithms were developed by Suri et al. (1996). These algorithms are training-based and provides a correction to the pixel-based classification or edge detection raw boundaries. This paper presents two training-based forced calibration algorithms for correcting the raw boundaries produced by classifiers. The authors force the raw LV contour to pass through the LV apex and then perform the calibration. Over a database of 377 patient studies having end-diastole and end-systole frames, the mean boundary error for the classifier system is 5.20 mm, the two forced calibration algorithms yield an error of 3.14 mm and 3.04 mm with a standard deviation of 2.73 mm and 2.89 mm.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133600960","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: 6