Whilst I've seen the original article (Journal of the American Medical Association), unfortunately I can't circulate it without breaking our subscription license agreement.
The investigation was apparently commissioned by the Dutch Ministry of Health. Standard they refer to is - American National Standard Recommended Practice for On-site Ad Hoc Test Method for Estimating Radiated Electromagnetic Immunity of Medical Devices to Specific Radio-frequency Transmitters (Standard C63.18). (AAMI:/ IEEE; 1997). (not a rigorous EMC product test standard - but rather a suggested basic methodology for equipment users to investigate possible EMI in a consistent way) The project was apparently driven by the search for a system to monitor blood products, which influenced their choice of RFID systems to test, as follows - "The selection of 2 RFID systems tested in this study was based on 3 characteristics: (1) the systems needed to comply with RFID standards set by the European Telecommunications Standards Institute; (2) radio frequencies needed to fall within the most common internationally used RFID frequency bands and (3) performance needed to fulfill the operational requirements of the project including availability of temperature sensitive RFID tags, low-cost tags suitable for disposable materials, contemporary integration with the local communications network, and location accuracy within a health care facility." Tests were performed in a 1-patient room, free of reflective objects, based upon methodology in the standard above. Ged Dean Nottingham University Hospitals NHS Trust _______________________________________ _________________________________________ -----Original Message----- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org <mailto:emc-p...@ieee.org> ] On Behalf Of John Woodgate Sent: 27 June 2008 08:29 To: emc-p...@ieee.org Subject: Re: EMC in the news: RFID & Medical In message <48640ca5.3060...@orionscientific.com>, dated Thu, 26 Jun 2008, E. Robert Bonsen <robert.bon...@orionscientific.com> writes: >Assessment took place^ according to an international test protocol. Really? Don't they cite the reference? I don't know of one that covers 125 kHz and 868 MHz. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk <file://www.jmwa.demon.co.uk> and www.isce.org.uk <file://www.isce.org.uk> Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- ________________________________ The information contained in this email may be the subject of public disclosure under the Freedom of Information Act 2000 - unless legally exempt from disclosure, the confidentiality of this email and your reply cannot be guaranteed. Copyright of this email and any attachments created by us remains vested in the Nottingham University Hospitals NHS Trust. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. This footnote also confirms that this email message has been swept by security software for the presence of known computer viruses. Nottingham University Hospitals NHS Trust City Hospital campus | Hucknall Road | Nottingham | NG5 1PB | Tel: 0115 969 1169 QMC campus | Derby Road | Nottingham | NG7 2UH | Tel: 0115 924 9924 If you have received this email in error please notify the sender. ________________________________ ID:QMCICT1 - B486510b70002.000000000001.0001.mml - 17:09:27 06/27/08 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
