RE: Homemade MRI

["Wes Van Pelt" <WesVanPelt@att.net>]

David and Radsafers,



My comments below are not intended to be inclusive of all issues that may

need consideration.



In NJ, the state regulations limit RF exposure to workers and members of the

public in any 0.1 hour time period. Therefore, the experimental subject

would have to be considered a member of the public and their RF exposure

limited accordingly.

I am assuming the experimental subject is not a patient receiving diagnostic

or therapeutic benefit from the RF exposure. This is a regulation (in NJ)

and therefore mandatory.



There are non-mandatory recommendations, generally called "standards", from

ICNIRP, ACGIH, IEEE and FCC which also place limits on the absorbed

radiofrequency energy to members of the public.  Also, ACGIH has a standard

for static magnetic fields.



Best regards,

Wes

Wesley R. Van Pelt, PhD, CIH, CHP

Wesley R. Van Pelt Associates, Inc.



-----Original Message-----

From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu] On Behalf Of David Gillum

Sent: Tuesday, April 27, 2004 1:24 PM

To: 'radsafe@list.Vanderbilt.Edu'

Subject: Homemade MRI



Dear Group,



I have a professor who has made his own MRI and would like to use human

subjects as part of an experiment. The IRB has reviewed the protocol and is

okay with it but has asked EH&S for safety considerations of the unit. It is

a 0.5 telsa system that has not been approved by any federal, state or local

agency. 



Can you please suggest any safety considerations for this unit? Does it need

to be approved by a governmental agency prior to use (for human subjects)?

Is he required to have a safety plan in place to operate the unit?



Any additional thoughts are appreciated.



Thanks!

-David



--

David R. Gillum, MS

Laboratory Safety Officer



University of New Hampshire

Environmental Health and Safety

11 Leavitt Lane, Perpetuity Hall

Durham, NH  03824

Telephone #: 603-862-0197

Facsimile #: 603-862-0047

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