• Title/Summary/Keyword: Medical electronics

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Development of a Prototype of a Module-Based Patient Monitor (모듈형 환자 모니터 시제품의 개발)

  • Woo, Eung-Je;Park, Seung-Hun;Kim, Kyung-Soo;Choi, Keun-Ho;Kim, Seung-Tae;Moon, Chang-Wook;Jun, Byung-Moon;Lee, Hee-Cheol;Kim, Hyung-Jin;Seo, Jae-Joon;Park, Jong-Chan
    • Proceedings of the KOSOMBE Conference
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    • v.1997 no.05
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    • pp.353-357
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    • 1997
  • We have developed a prototype of a module-based patient monitor. In this paper, we describe the design methodology and specifications of the developed module-based patient monitors. The monitor consists of a main unit and module cases with various parameter modules. The main unit includes a 12.1" TFT color LCD, a main CPU board, and peripherals such as a module controller, Ethernet LAN card, video card, rotate/push button controller, etc. The main unit can connect at maximum three module cases, each of which can accommodate up to 7 parameter modules. They include the modules for electrocardiograph, respiration, invasive blood pressure, noninvasive blood pressure, temperature, and $SpO_2$ with plethysmograph.

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Development of a Prototype Patient Monitoring System with Module-Based Bedside Units and Central Stations: Overall Architecture and Specifications (모듈형 환자감시기와 중앙 환자감시기로 구성되는 환자감시시스템 시제품의 개발: 전체구조 및 사양)

  • Woo, E.J.;Park, S.H.;Jun, B.M.;Moon, C.W.;Lee, H.C.;Kim, S.T.;Kim, H.J.;Seo, J.J.;Chae, K.M.;Park, J.C.;Choi, K.H.;Lee, W.J.;Kim, K.S.
    • Proceedings of the KOSOMBE Conference
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    • v.1996 no.05
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    • pp.315-319
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    • 1996
  • We have developed a prototype patient monitoring system including module-based bedside units, interbed network, and central stations. A bedside unit consists of a color monitor and a main CPU unit with peripherals including a module controller. It can also include up to 3 module cases and 21 different modules. In addition to the 3-channel recorder module, six different physiological parameters of ECG, respiration, invasive blood pressure, noninvasive blood pressure, body temperature, and arterial pulse oximetry with plethysmogaph are provided as parameter modules. Modules and a module controller communicate with up to 1Mbps data rate through an intrabed network based on RS-485 and HDLC protocol. Bedside units can display up to 12 channels of waveforms with any related numeric informations simultaneously. At the same time, it communicates with other bedside units and central stations through interbed network based on 10Mbps Ethernet and TCP/IP protocol. Software far bedside units and central stations fully utilizes gaphical user interface techniques and all functions are controlled by a rotate/push button on bedside unit and a mouse on central station. The entire system satisfies the requirements of AAMI and ANSI standards in terms of electrical safety and performances. In order to accommodate more advanced data management capabilities such as 24-hour full disclosure, we are developing a relational database server dedicated to the patient monitoring system. We are also developing a clinical workstation with which physicians can review and examine the data from patients through various kinds of computer networks far diagnosis and report generation. Portable bedside units with LCD display and wired or wireless data communication capability will be developed in the near future. New parameter modules including cardiac output, capnograph, and other gas analysis functions will be added.

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Intrabed and Interbed Networks for Patient Monitoring (환자 모니터링을 위한 인트라베드 및 인터베드 통신망)

  • Park, Seung-Hun;Woo, Eung-Je;Kim, Kyung-Soo;Choi, Keun-Ho;Kim, Seung-Tae;Lee, Hee-Cheol;Seo, Jae-Joon;Kim, Hyung-Jin
    • Proceedings of the KOSOMBE Conference
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    • v.1997 no.05
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    • pp.285-289
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    • 1997
  • In this paper, we describe the intrabed and interbed network in a developed patient monitoring system. Intrabed network handles data communication among the main unit of a bedside monitor and parameter modules plugged in it. Interbed network deals with a higher level data communication among many bedside monitors, central stations, DB servers, and clinical workstations. Analyzing the data communication requirements in each stage of the system, we designed the intrabed network based upon RS-485 and HDLC protocol with 1Mbps data rate. Interbed network is designed to utilize the industry standard 10Base-T Ethernet with TCP/IP and UDP protocol. We present the specifications and the performances of the developed data communication networks in the patient monitoring system.

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자기공명 영상촬영을 위한 임의로 선택된 모양의 최소인덕턴스 경사자계코일의 설계 (Minimum-Inductance MRI Gradient Coil Design with Arbitrarily-Selected Shape)

  • Lee, J.K.;Yang, Y.J.;Yi, Y.;Cho, Z.H.;Oh, C.H.
    • Proceedings of the KOSOMBE Conference
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    • v.1994 no.05
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    • pp.85-87
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    • 1994
  • This paper proposes a new inductance minimization scheme for a gradient system of arbitrarily selected shape. Although it is important to minimize the gradient coil inductance to reduce the current switching time, such minimization has been possible only for cylindrical or parallel biplanar coils. By using small current loops on arbitrarily selected surface as optimization elements, the inductance of the whole circuit can be minimized using the loop's self- and mutual-inductances. Wire positions can be easily derived from the loop current distribution. Preliminary studies for the design of x-directional surface gradient coil show the utility of tile proposed gradient coil design scheme.

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The Graphical User Interface Design for Optimal MRI Operation (MRI 시스템의 최적화 운용을 위한 GUI 디자인)

  • Moon, J.Y.;Kang, S.H.;Kim, K.S.;Kim, J.S.;Im, H.J.
    • Proceedings of the KOSOMBE Conference
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    • v.1997 no.05
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    • pp.235-238
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    • 1997
  • The Graphical User Interface (GUI) software is developed for 0.3 Tesla Permanent Magnet Resonance Imaging (MRI) system and the state of art of designing GUI system is discussed in this paper. The Object-Oriented concepts are applied for designing GUI software utilizing Interbase ODBC Database layer. Also, Multimedia concepts such as voice, sound and music are integrated in GUI system to enhance the efficiency of MRI operation.

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Low-Power Design of the Surface Gradient Coil for Magnetic Resonance Imaging (자기공명영상촬영을 위한 표면경사자계코일의 저전력 설계)

  • Oh, Chang-Hyun;Lee, Jong-Kwon;Yi, Yun;Kim, Min-Gi
    • Proceedings of the KOSOMBE Conference
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    • v.1993 no.11
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    • pp.33-35
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    • 1993
  • A new low-power, high-order optimization scheme to design surface gradient coils (SGC) is proposed for magnetic resonance imaging (MRI). Although previous SGCs have been designed and constructed just to get strong linear gradients, this paper proposes more systematic ways of SGC design by minimizing electrical power consumption in the gradient coil and by removing unnecessary high-order field distortions in the imaging region. By assuming continuous current flow on the coil surface which may be or may not be planar, power consumption in the coil is minimized. According to the simulation results, the SGC designed by using the proposed scheme seems to produce much more uniform linear gradient field using less electrical power compared to the previously proposed SGCs.

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Experimental study of open head coil in vertical field MRI (수직자계 MRI용 개방형 머리영상 코일에 대한 실험적 연구)

  • Yi, J.H.;Kang, D.H.;Kim, J.H.;Yi, W.
    • Proceedings of the KOSOMBE Conference
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    • v.1996 no.05
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    • pp.108-110
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    • 1996
  • Open MRI is a new concept in clinical application of the MRI such as interventional study. Receiving RF coils used in the open MRI must have open structures to insure convenient manipulations fur the patient. In this paper, we presented experimental study fur open head coil suitable to 0.3 Tesla vertical field MRI system with its experimental results.

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Multimodal Medical Image Fusion Based on Sugeno's Intuitionistic Fuzzy Sets

  • Tirupal, Talari;Mohan, Bhuma Chandra;Kumar, Samayamantula Srinivas
    • ETRI Journal
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    • v.39 no.2
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    • pp.173-180
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    • 2017
  • Multimodal medical image fusion is the process of retrieving valuable information from medical images. The primary goal of medical image fusion is to combine several images obtained from various sources into a distinct image suitable for improved diagnosis. Complexity in medical images is higher, and many soft computing methods are applied by researchers to process them. Intuitionistic fuzzy sets are more appropriate for medical images because the images have many uncertainties. In this paper, a new method, based on Sugeno's intuitionistic fuzzy set (SIFS), is proposed. First, medical images are converted into Sugeno's intuitionistic fuzzy image (SIFI). An exponential intuitionistic fuzzy entropy calculates the optimum values of membership, non-membership, and hesitation degree functions. Then, the two SIFIs are disintegrated into image blocks for calculating the count of blackness and whiteness of the blocks. Finally, the fused image is rebuilt from the recombination of SIFI image blocks. The efficiency of the use of SIFS in multimodal medical image fusion is demonstrated on several pairs of images and the results are compared with existing studies in recent literature.

Development of a 12 Channel Interpretive Electrocardiograph (12채널 해석 심전계 시제품 개발)

  • Lee, Byung-Chae;Hahm, Geon;Jun, Young-Il;Choi, Kwang-Chol;Choi, Keun-Ho;Kim, Won-Ky;Kim, Jun-Soo;Jeong, Ki-Sam;Lee, Jeong-Whan;Lee, Myoung-Ho;Wright, George;Cochlan, David
    • Proceedings of the KOSOMBE Conference
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    • v.1997 no.11
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    • pp.411-414
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    • 1997
  • This paper describes the design guideline, methodology and general specification of the developed 12 channel interpretive electrocardiograph. The developed 12 channel electrocardiograph consists of main module, patient module, DSP module, interface module, power/battery module, TFT color LCD and thermal recorder. The control panel of the system has full keyboard, rotate/push button, function key and unctional indicators. The graphic user interface program conveniently allows user to record, setup, store, manage ECGs. A variety of system configurations give it ability to make user favorable environment. This system also has a resting adult's ECG analysis program. The developed system and program will be continusely evolved using a database of clinically correlated ECGs.

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