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Engineering in Medicine and Biology Magazine, IEEE

Issue 2 • Date March-April 2002

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Displaying Results 1 - 13 of 13
  • Relationships - An important ingredient for success

    Publication Year: 2002 , Page(s): 4
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  • An Internet-based system for the commerce of medical devices. A portal for improving communication between healthcare professionals and the medical device industry

    Publication Year: 2002 , Page(s): 26 - 32
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (965 KB) |  | HTML iconHTML  

    The MEDIDEV service combines a central product catalog featuring basic information with Internet-connected websites and online catalogs hosting the detailed information. This approach is compatible with the manufacturers' requirement to maintain control over the detailed information of their products. At the same time, it allows the end user to efficiently choose from a potentially long list of products-those which mostly satisfy his requirements-and then to get more detailed information in the corresponding linked websites and on-line catalogs. The manufacturers have two alternative ways for updating the information stored in the Portal. They can use a human-operated and HTML-based interface or an automated and CORBA-based interface. Thus, the timeliness and consistency of the Portal information is ensured. The adoption of Internet standard technologies (Java, CORBA, XML) has maintained a high level of platform independence and interoperability. The current version has been developed for Windows NT, while the final version is currently ported to a HP UNIX machine. Special care has been taken to support both major Internet browsers: Internet Explorer and Netscape Navigator. The implementation of XML for the data presentation has led to a reduced and optimized transmission of data from the Portal to the user's browser. Only the new data are transmitted as XML documents each time, while formatting information is once loaded at the browser. The separation of data from the formatting information leads to another advantage. It is a common practice today for horizontal portals, which are targeting a wide variety of interests, to subcontract content from other, more specialized portals or sites (vertical portals). The MEDIDEV Portal can provide its data to other sites as XML documents that will be parsed and displayed with their own look and feel. This opens up new marketing opportunities. View full abstract»

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  • Frequency dependence of impedances at the acupuncture point Quze (PC3)

    Publication Year: 2002 , Page(s): 33 - 36
    Cited by:  Papers (26)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (313 KB) |  | HTML iconHTML  

    Investigates an equivalence circuit model for characterizing a person's electrical properties. It is not straightforward to compare skin-impedance data of various research groups because the impedance depends very sensitively on measurement conditions such as the shape, size, material, and contact pressure of the electrodes, the skin humidity due to sweat, the applied current, the shape of the wave, and even the psychological condition of the subject. With these subtleties in mind, we show the impedance data taken by various groups and our data (shown with curves). Data of other groups are scattered around our curve. View full abstract»

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  • Opening doors with assistive technology

    Publication Year: 2002 , Page(s): 45 - 52
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    Results of the 2001 RESNA student scientific paper and student design competitions are presented. The topics dealt with included: scapula orientation in a virtual wheelchair push; repeatability of determining effective Young's modulus of buttocks soft tissue across multiple subjects; power and control system testing of five different types of power wheelchairs; modification of hybrid III test dummy for use in wheelchair studies; effect of adult-onset diabetes and/or peripheral neuropathy on acceleration threshold detection during horizontal translations; battery tester for people with physical and mental disabilities; design of a modular sensory feedback system to enhance physical education of persons with disabilities; an assistive technology key turning device for independent entryway access; ear-chin strap system for sleep apnea. View full abstract»

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  • Neural networks for improved text-independent speaker identification

    Publication Year: 2002 , Page(s): 53 - 58
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (375 KB) |  | HTML iconHTML  

    In this article, we consider the binary partitioned approach with pattern index information, propose an neural network array (NNA) that performs the pattern recognition task by combining the binary partitioned approach with decision trees, and verify that the NNA can not only reduce the computation cost of training and recognition but also reduce the classification error rate. Speaker identification with the radial basis function neural network array (RBFNNA) is discussed in detail as an application of the NNA. View full abstract»

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  • How to acquire a magnetic personality

    Publication Year: 2002 , Page(s): 67 - 70
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  • Balancing autonomy and benefit in research ethics

    Publication Year: 2002 , Page(s): 68 - 70
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    Laws requiring motorcycle riders to wear helmets save lives and prevent nasty brain injuries. However, a substantial number of riders resent this parentalism and want to be free to decide whether to ride without a helmet and take the additional risk. After all, motorcycle riders have already chosen a more risky form of transportation. The debate is a conflict about which of two legitimate values should prevail: benefits to riders or freedom to choose. It is a debate that occurs whenever government restricts liberty in the name of social benefit. One of the places this debate takes place is in medical research. Our discussions about the ethics of research take place in the shadow of the Nazi medical atrocities in World War II. In this essay I explore the issue of clinical trials on human volunteers for whom there will be no anticipated benefit. The topic reveals how difficult it is to reconcile autonomy and protection of human volunteers. View full abstract»

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  • Legal defenses to the use of data digits to identify fabricated data

    Publication Year: 2002 , Page(s): 77 - 80
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  • Errata - "Effect of joint angle on EMG variables in leg and thigh muscles"

    Publication Year: 2002 , Page(s): 88
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  • Ensuring that biomedical engineers are ready for the real world

    Publication Year: 2002 , Page(s): 59 - 66
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (729 KB) |  | HTML iconHTML  

    Discusses preparing biomedical engineering students for real-world problem solving by putting theory into practice in the curriculum. It is concluded that mechanisms for preparing biomedical engineering students for real-world problem solving are numerous. Failure to incorporate such real-world experiences throughout the curriculum creates frustration for the student, particularly for the freshman or sophomore undergraduate who lacks the experience to draw a connection between theory and practice. Upon graduation, the biomedical engineer is suddenly confronted with real-world problems and design challenges that require a team of experts, project planning and execution, regulatory and quality control, financial support, and a satisfied customer. Too often, graduates are unprepared for this transition to real-world engineering. View full abstract»

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  • Cellular neural networks for real-time DNA microarray analysis

    Publication Year: 2002 , Page(s): 17 - 25
    Cited by:  Papers (16)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (711 KB) |  | HTML iconHTML  

    A new methodology for real-time processing of DNA chip images is proposed. The idea developed here is to use the cellular neural network (CNN) array to analyze the DNA microarray. A CNN is an analog dynamic processor array that reflects this property: the processing elements interact directly within a finite local neighborhood. Due to its architecture, a two-dimensional CNN array is widely used to solve image processing and pattern recognition problems; moreover, the parallelism characteristic of this structure allows one to perform the most computationally expensive image analysis tasks three orders of magnitude faster than a classical CPU-based computer. This approach, thanks to the supercomputing capabilities of the CNN architecture, makes the whole DNA chip methodology fully parallel and also makes the processing phase, until now very time consuming, a real-time step. We discuss the results of testing an algorithm based on the CNN universal machine (CNN-UM) that has been designed to classify the image data. The algorithm is implemented in an analogic (analog and logic) microprocessor. View full abstract»

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  • Custom implant design for patients with cranial defects

    Publication Year: 2002 , Page(s): 38 - 44
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (671 KB) |  | HTML iconHTML  

    Three-dimensional image reconstruction and rapid prototyping models improve defect evaluation, treatment planning, implant design, and surgeon accuracy. It is found that both 3-D imaging and physical models are helpful for the evaluation of cranial defects, treatment planning, and custom implant design. While 3-D imaging can be used on a routine basis, the physical skull models could be a useful additional tool, especially when the cranial defects are rare, unusual, or difficult. In this case, the introduction of a rapid prototyping stereolithographic medical model for manufacturing a large cranioplasty implant is considered to be an improvement over other traditional techniques. Because of the accuracy of the physical model, the surgeon has a good understanding of the cranial defect and precise fitting implants can be fabricated in order to re-establish skull contours for the patient. In addition, the excellent fitting and fixation techniques of cranioplasty have reduced operating time significantly. View full abstract»

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  • Cross-hybridization on PCR-spotted microarrays

    Publication Year: 2002 , Page(s): 71 - 75
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    While more work is certainly necessary to better quantify the effects of hybridization stringency conditions on PCR-spotted microarrays, we find that sequence similarity requirements for observing cross-hybridization on these microarrays are slightly higher than, yet similar to, those observed for oligonucleotide arrays. These results suggest that consideration needs to be given to probe design for genes containing repetitive regions, as cross-hybridization can impact expression studies in two ways: 1) unrelated genes can appear to co-vary by virtue of a cross-hybridizing region; and 2) true expression variations of a gene could be masked by the cross-hybridizing signal of another gene. Both issues become even more of a concern when dealing with transcripts expressed at low levels because a small amount of overlap from an up-regulated gene would provide enough false signal to make covariance seem significant. View full abstract»

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Aims & Scope

IEEE Engineering in Medicine and Biology Magazine contains articles on current technologies and methods used in biomedical and clinical engineering.

 

This Magazine ceased publication in 2010. The current retitled publication is IEEE Pulse.

Full Aims & Scope