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Illinois had dose limits for common projections & a std. patient about 20 years ago
>References: <35B25CF2.10B9@erols.com>
>Date: Sun, 19 Jul 1998 21:38:41 -0500
>Reply-To: Medical Physics Mailing List <MEDPHYS@LISTS.WAYNE.EDU>
>Sender: Medical Physics Listserver <medphys@cwis-20.wayne.edu>
>From: JOHN CAMERON <jrcamero@FACSTAFF.WISC.EDU>
>Subject: Illinois had dose limits for common projections & a std. patient
> about 20 years ago
>To: MEDPHYS@LISTS.WAYNE.EDU
>
>Dear Colleagues: Dan Garner & Sandy Perle make some good points.. I recall
>that the State of Illinois established maximum limits for some common
>projections and a "std. patient" (e.g. 23 cm thick chest) about 20 years
>ago. Larry Lanzl may know how it worked out. I don't know if it is still
>in effect or if anyone thought it did any good. I understand that Canada
>(or some province(s)) have a limit on the dose for mammography. I heard
>some complaints about it a few years ago. I am not in favor of such
>clinical dose limits but it fits in with our present radiophobia.
> I do think the NCRP should recommend that interventional
>fluoroscopic units should have an EAP- or DAP-meter as standard equipment..
>An appropriate instrument (the Diamentor) has been around for about 35
>years and is still little used (or known) in the US. Both the UK and
>Germany require such a meter on ALL fluoroscopes.
> NEW SUBJECT: PHYSICS TRAINING OF DIAGNOSTIC RADIOLOGISTS.
>A new revision of AAPM Report No. 11 "A GUIDE TO THE TEACING OF CLINCIAL
>RADIOLOGICAL PHYSICS TO RESIDENTS IN DIAGNOTIC AND THERAPEUTIC RADIOLOGY"
>is currently being reviewed by the AAPM Education Council. The syllabus
>still does not contain an item that residents should be taught how to
>answer patient questions about dose in an understandable way. I brought
>this matter to the attention of the Committee that revised the draft last
>fall. I hoped my suggestion would have been included - it wasn't. I
>obviously believe that the new revision should correct this deficency. I
>would suggest the BERT concept be encouraged but anything else (except the
>LNT approach) would be an improvement over nothing..
> The revised syllabus lists 27 topics and the suggested time to be
>spent on each topic. For example, for diagnostic radiology residents, it
>suggests four hours of instruction on radiobiology. I'm not sure they even
>need one hour of radiobiology, except possibly for passing board exams. I
>think the residents would benefit by a one hour lecture on how to explain
>radiation in terms of background radiation (BERT) to the patient. That hour
>would still leave plenty of time to describesome of the evidence that low
>doses (<0.2 Gy) are probably hormetic. Those interested in radiation
>hormesis and adaptive response should visit the following new web site:
> S. M. Javad Mortazavi M. has established a web site dealing with
>Low Dose Radiation Hormesis and related topics. It is still under
>construction but well worth visiting if you are intereste in these topics.
>He is a Medical Physicist, Ph.D Candidate in the Biology Division of Kyoto
>University of Education, Japan Tel (81 75) 644 8266 Fax (81 75) 645
>1734 E-mail mortalav@wsml.kyokyo-u.ac.jp Visit his Home Page on Low Dose
>Radiation Radiation, Hormesis and Radioadaptive Response at URL:
>http://www.angelfire.com/mo/radioadaptive Look in his section on"
>radiation phobia" for my article on explaining radiation. to patents. Or
>look for the same article at the location "advertised:" below.
> Best wishes,. John
>I hope to see some of you at the AAPM meeting in San Antonio.
>
>
>
>
>
>John R. Cameron, 2571 Porter Rd., P.O. Box 405, Lone Rock, WI 53556-0405
> Phones: 608/583-2160; Fax: 608/583-2269 e-mail all year:
>jrcamero@facstaff.wisc.edu
>Our winter home (September 1 - May 15): 2678 SW 14th Dr., Gainesville, FL
>32608
>phones : 352/371-9865; Fax 352/371-9866
>
>See article: "Explaining Radiation to Patients" at
>http://www.mindspring.com/~sherouse/MPFAQ/Cameron1.html.
>If you have trouble reading it, I can send it to you as part of an e-mail
>message.
>
> *****
>Frequently Asked Questions (FAQ) for Medphys at:
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>
>Archives of recent Medphys postings at:
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>
Chris Alston
alstonc@odrge.odr.georgetown.edu
I am not here a representative of my employer.