"Magnetic resonance angiography (MRA) is magnetic resonance imaging (MRI) that specifically visualizes blood vessels and blood flow to evaluate vascular disorders within the structure being studied. Unlike CT, it does not rely on the absorption of x-ray energy. Magnetic resonance imaging uses the natural magnetic properties of the hydrogen atoms in our bodies that emit radiofrequency signals when exposed to radio waves within a strong electro-magnetic field. These signals are processed and converted by the computer into high-resolution, three-dimensional tomographic images. Patients with metallic or electronic implants or foreign bodies cannot be exposed to MRI. The patient must remain still while lying on a motorized table within the large, circular MRI tunnel. A sedative may be administered as well as contrast material for image enhancement. This code reports an exam of the chest. " Description in Lay Terms from Encoder Pro..
Originally Posted by Rgreen0118
Arlene J. Smith, CPC, CEMC, COBGC
AAPC Tacoma WA Chapter
Past-President 2013 and 2011
Member Relations 2008
AAPC NAB 2007-2009