[Intl_DxMedPhys] Rhythmlink MR Conditional Electrodes

[Gretchen Raterman Bell]

Dear MedPhys -

I got an interesting MRI Safety question this morning regarding the
Rhythmlink MR Conditional EEG Electrodes.  They are going live at a
facility I cover, and we are finding that the company has some conflicting
verbiage in their documentation of conditionality.  I've attached the most
recent (2025) technical brochure on MR conditionality.

What we are finding confusing is that we've received a previous memorandum
from the company stating that there's a 15 minute limit on continuous
scanning (within acceptable conditions), which they clarified as *per
sequence*.  This document is from 2017.  However, the attached 2025
document states the following:

[image: image.png]

And we all know how an exam goes -- little to no time in between
sequences.  Then they have an FAQ section at the end that states this:

[image: image.png]

So I guess I'm wondering if anyone else has looked into this?  What is
defined as "a break"?  A minute?  Two minutes?  Depending on how high a SAR
the previous sequence was?  I'm currently digging into this, but I wanted
to put out the MedPhys bat signal in the meantime.  These are mostly used
on pediatric ICU patients, so it's particularly touchy.

Thank you to anyone who can point me in the right direction!!

Gretchen R. Bell, M.S., DABR
Diagnostic Imaging Physicist
Ochsner Medical Center
(504)842-8506
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osu.edu/pipermail/intl_dxmedphys_wd_osu_list/attachments/20260630/a305a704/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 61366 bytes
Desc: not available
URL: <http://lists.osu.edu/pipermail/intl_dxmedphys_wd_osu_list/attachments/20260630/a305a704/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 54724 bytes
Desc: not available
URL: <http://lists.osu.edu/pipermail/intl_dxmedphys_wd_osu_list/attachments/20260630/a305a704/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Radiology-Brochure-Updated-2025_Digital.pdf
Type: application/pdf
Size: 665924 bytes
Desc: not available
URL: <http://lists.osu.edu/pipermail/intl_dxmedphys_wd_osu_list/attachments/20260630/a305a704/attachment.pdf>