[Test-Equipment] Radioactive Tube Stamp

[J. Forster]

I never said it did.

There are questions about Gadolinium's toxicity, particularily in those
with impaired kidney function, but it's not a radioisotope.

-John

===============

> Note to all:
>
> MRI does NOT use a 'radioactive contrast IV solution'.  Gadolinium
> compounds are used, and have been since the 1980s, and they are NOT
> radioactive.
>
> If you google 'Rehr MRI' you will get a few references that give more
> info.
>
> 73,
>
> Roger Rehr
> W3SZ
>
> On Jul 4, 2010, at 1:37 PM, J. Forster wrote:
>
>> Correct. The MRI actually uses the same principles as a YIG
>> oscillator or
>> YIG filter, which was originally called NMR (Nuclear Magnetic
>> Resonance).
>> Edward Purcell at Harvard got the Nobel Prize for discovering it.
>>
>> NMR was originally used for chemical analysis with a magnetic field
>> and
>> swept HF excitation.
>>
>> MRI is the same technology, but introduces a gradient into the
>> magnetic
>> field and lots of computing to develop 3-D images.
>>
>> Happy Fourth,
>>
>> -John
>>
>> ================
>>
>>
>> [snip]
>>> The reference to MRIs and radioactive issues is the RADIOACTIVE
>>> CONTRAST
>>> IV SOLUTION.  It is NOT the MRI itself.
>>
>> [snip]
>>> Have a happy 4th!
>>>
>>> Bob - N0DGN
>>
>>
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>