RE: Medical RF Imaging

["Jacobus, John (OD/ORS)" <jacobusj@ors.od.nih.gov>]

We have something like that now.  It is called magnetic resonance imaging.

Electromagnetic fields are used to perturb the magnetic spin of atoms in the

body.  As the spin is released, the resulting electromagnetic signal

corresponds to the elemental composition of the material, or organ, being

examined.



-- John 

John Jacobus, MS

Certified Health Physicist 

3050 Traymore Lane

Bowie, MD  20715-2024



E-mail:  jenday1@email.msn.com (H)      



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

From: Gary Isenhower [mailto:garyi@BCM.TMC.EDU]

Sent: Friday, July 27, 2001 11:23 AM

To: Franz Schoenhofer

Cc: Otto G. Raabe; radsafe@list.vanderbilt.edu

Subject: Medical RF Imaging







Can anyone tell me why nobody has come up with an RF frequency medical

imaging device?  I caught the phrase "rotational and vibrational" from

Ruth's message and I wondered why we can't take advantage of  molecular

absorption in human tissue to produce something like a CT image.  There

must be some obvious reason that I am just missing.



    _______________________________________________



	Gary Isenhower

	713-798-8353

	garyi@bcm.tmc.edu

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