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Question
they use E.C.T. treatment for depression would strong  magnetic fields have the same effect?

Answer
Not really.  Transcranial magnetic stimulation (TMS) http://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation uses magnetic fields, but it depends on changing magnetic fields to create electric fields.  So static magnetic fields won't do anything, like the dominant field of an MRI, but changing magnetic fields can create electric fields which create currents.  The effect is much the same as ECT, which directly induces currents through the applied electric field.  Its clinical usage seems to be much the same, because they both produce similar currents.  ECT currents can go deeper into the brain, but TMS seems to be a little more targeted.  I'm not a medical doctor, my doctorate is in physics, so I can't speak to the medical effects.

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Dr. Stephen O. Nelson

Expertise

I can answer most basic physics questions, physics questions about science fiction and everyday observations of physics, etc. I'm also usually good for science fair advice (I'm the regional science fair director). I do not answer homework problems. I will occasionally point out where a homework solution went wrong, though. I'm usually good at explaining odd observations that seem counterintuitive, energy science, nuclear physics, nuclear astrophysics, and alternative theories of physics are my specialties.

Experience

I was a physics professor at the University of Texas of the Permian Basin, research in nuclear technology and nuclear astrophysics. My travelling science show saw over 20,000 students of all ages. I taught physics, nuclear chemistry, radiation safety, vacuum technology, and answer tons of questions as I tour schools encouraging students to consider careers in science. I moved on to a non-academic job with more research just recently.

Education/Credentials
Ph. D. from Duke University in physics, research in nuclear astrophysics reactions, gamma-ray astronomy technology, and advanced nuclear reactors.

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