Magnetic Resonance Imaging: Basic Principles
Resonance Imaging (MRI) became the most popular imaging modality
within recent years. There
are some basic reasons why MRI became so popular in such a short
time. It is
clear today that the popularity and the use of this imaging
modality will probably be further increased with implementation of
new imaging techniques and sequences allowing this MRI to be used
for many new indications.
The conventional way of obtaining vascular images is a
catheter-based arteriography, which requires an invasive approach
and also requires the use of vascular contrast (which may have
side effects to the patient). MRI
allows one to obtain vascular images, so called MR Angiography
or MRA, without using any vascular contrast or any invasive
most clinical settings today, MRA is used for screening; however,
with the rapid improvement of the technique, MRA may replace the
conventional angiography completely in the near future.
other important feature of this technique is the MR Spectroscopy.
Although this technique has not been used extensively, MR
Spectroscopy may gain momentum, and even may overshadow the MRI
(imaging) in the future.
MR Spectroscopy allows one
to analyze the biochemical properties and metabolic activities of
there are some artifacts specific to MRI, major limitations or
artifacts of the other techniques (such as bone artifacts in CT
and air/gas related limitations of Ultrasonography) do not pose
any significant artifact or limitation with MRI. Therefore, many
body parts (e.g., posterior possa, spine) that can not be studied
with other techniques can easily be imaged with MRI.
Because of this, MRI rapidly became the first line imaging
modality in the head and spine.
Disclaimer: This page is intended to be an alternative source for medical professionals who deals with magnetic resonance, in clinical practice or research, but should not replace a formal education, teaching or training in the field. The author of this web source, Orhan Konez, MD, holds no responsibility for accuracy of this information, data or images. This web page does not establish any form of consultation with Dr. Konez. Information, statement or images can not be copied, duplicated and distributed in any form without permission.
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