The
world’s leading authority on magnetic resonance imaging (MRI) safety, Professor
Frank Shellock, will open the new MRI suite at the Medway NHS Foundation Trust
(UK) on Tuesday November 8.
The
unit has been fitted with Ferroguard, the award-winning ferromagnetic detection
safety system from UK-based company Metrasens, which is sensitive enough to detect
the smallest ferromagnetic objects – even a single hairgrip.
If metal objects are taken into the
scanning room, they can be pulled into the magnet’s core at high speed,
potentially causing injury to patients or damage to equipment.
Professor
Frank Shellock, adjunct clinical
professor of radiology and medicine at the Keck School of Medicine, University
of Southern California and the world-leading authority on MR safety, said: “I
strongly feel ferrodetection systems should be carefully considered as a tool
to facilitate proper pre-MRI screening. Their incorporation as a component of a
carefully thought-out and controlled process can add to the safety of patients
and staff.” Professor Shellock, who has more than 25 years’ experience
conducting laboratory and clinical investigations in the MRI field, will be the
keynote speaker at a London *conference on MR safety on November 9.
Kevin Griffin,
consultant radiographer in MRI at Medway Maritime Hospital, said: “The re-development of our MRI
suite created a perfect opportunity to re-think our approach to MRI safety. We
searched the market for appropriate equipment and were impressed by both the
product and the immediate involvement of Metrasens. Their knowledge and advice
helped us in the design of access safety for the MRI Suite.
“The
addition of the new scanner concentrated our minds on how we might tighten our
approach and ferrous detection was high on the list. We required a sensitive
system that was not overly-obtrusive, not alarming to patients and not
time-consuming. Metrasens gave detailed
advice on siting considerations and how we might cover both access points to
the controlled area of the suite.
“Over
the years we have had to re-think our safety policy many times. What was considered to be an acceptable risk,
has now had to change to a no-risk approach. The environment is becoming less
forgiving and I think that quality ferrous detection is now a non-negotiable safety
‘must have.’”
“You
can never be complacent with health and safety - and having Ferroguard gives us
peace of mind. We operate in a very challenging environment and we have to up our game in line with increased risks.”
Martin Mitchell, head of MRI at Medway, said the unit’s new MRI scanner was effectively a
large magnet, with magnetic strength around 120,000 times the earth’s magnetic
field. “We use it to look at the hydrogen atoms in the body, which are mostly
water and fat in the soft tissues. The new machine is very effective for
looking at the liver, the small bowel, most of the large joints and the brain.
It is being used more and more for degenerative disease, such as arthritis of
the hips and cartilage damage to the hips and knees, and degenerative disease
of the brain. It is also very sensitive to some forms of cancer.
“When we first had MRI here at
Medway about 12 years ago, we were doing six to seven cases a day. Now we are
doing in the region of 50 cases a day.
“Having the Ferroguard system is
massively important from the safety point of view of our patients. We want to
ensure that all our patients are safe to go into the scanner and that no one is
taking in anything that is not MR-compatible. We use it to screen the patients
as they enter the MRI environment. All our patients are changed into
gowns, but the Ferroguard system can still find some objects which would
cause concern in the MRI environment.”
Dr Simon Goodyear, CEO
of Metrasens,
developers of the MRI safety system installed at Medway Maritime Hospital,
said: “We are proud to have contributed to the outstanding MRI safety processes
implemented in this new facility. It is
a leading example of how carefully thought out processes, further strengthened
by deployment of our Ferroguard detection technology and 100 per cent
ferrous-free transfer equipment, can provide real confidence in the safety of
patients, staff and imaging technology investment”.
Professor Shellock with the Medway MRI team