MRIs, A Guide For Use
Amy Price PhD
MRIs have gone through a lot of changes and improvements in the last few
years. A first class radiologist is the best way to get an accurate
diagnosis but great equipment helps too. People ask us at SIF how can I
know that my radiologist does quality work? The best way is to ask who
others consider the best. Ask at your Doctors, at physiotherapy and at
the hospital. Soon you will find some names come up over and over again.
It is important to find out what kind of MRIs they are best at reading.
Some specialize in the brain, tumors, or spines. all radiologists are
not considered equal so choose with care! For an explanation of how they
work and the history of MRI
click here

Before you agree to an MRI it is good to find out who will be explaining
the results and the technical terms in your report to you. At SIF we get
multiple requests to explain results of MRIs. We can not help with this
as an MRI is only a part of the picture, diagnostics are made in
conjunction with detailed physical examinations and patient/physician
consultation. If you come across an unusual term in your MRI you can try
the Read My MRI
feature in the members section of SIF
MRI machines work with magnets and the strength is measured by
Tesla.
The Tesla strength can vary anywhere from .046 to 8 Tesla. Before you
book an MRI ask what the strength is of the machine they will use for
your scan. The strongest Tesla in common use outside of research
settings is a 3 Tesla. The stronger the Tesla the clearer the image.
Large herniations can be seen with an .02 Tesla. Using a 3 Tesla even
ligament damage is quite visible.
Click here
It used to be thought that 7-8 Teslas would not be safe for patients
because of the radio frequency but these fears proved groundless
click here
and this Tesla strength is used for revealing
vascular structure
and
for detailed brain scans.
MRIs can be with or without contrast. A contrast MRI makes it easier for
the diagnostician to see scar tissue that may have formed because of the
injury. The contrast is a small amount of water soluble dye that is
injected at the time of your MRI.
MRIs can be static or functional (fMRI) fMRIs measure function. Oxford
University has an interesting and informative site detailing how fMRI
works and the strengths and perceived weakness of this approach
click here
Technology combining MEG (measures brain's electrical activity) and fMRI
are bringing hope for treatment in previously uncharted territory
Click here
Software can
convert images into 3D For more info and to see axonal motion in 3D
click here
The software
technology in detail
click here
Stand Up MRIs are thought to show structural patterns more clearly and
can signpost where a client is feeling pressure. Some ligament damage
can also be shown
more accurately with the stand up MRI.
Click Here
Research done on
this method click here
A new and promising technology is on the horizon to reduce MRI costs and
also create a machine that can be used for those with metal implants or
even to assist in surgery!
Click here
