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by Dr Evelyn Ho
Lai Ming

was
once asked if I was a radio deejay because I
had said, I was a radiologist. That really
amused me initially, and it made me think of the many times
where people would wonder what it was I did!
Was
I a technician? Most would be surprised that I am, indeed, a
medical doctor. The implication is that many in Malaysia,
might have used the services of a radiologist sometime in
their lifetime but would never have realised it or known it.
As some would say, they have never seen the “face” of
the radiologist that reported their x-ray examination!
The
title of “WHAT is a Radiologist?” is
intentional because it reflects the lack of information on
this branch of Medicine that perhaps was ‘born’ with the
discovery of X-rays in 1894.
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The
radiologist is a medical doctor. He/she would have gone
through medical school and graduated with a degree to
practise medicine. In Malaysia, before taking up the post
graduate degree for specialisation, there is a requirement
to serve the country as a medical officer for a few years.
This period of service will vary with the requirements for
entry into a local post graduate course in Radiology from
time to time.
The
Masters course (as the degree is awarded by a university, in
our case University Malaya, University Kebangsaan Malaysia
and University Sains Malaysia), is a structured 4 year course with tough written,
oral, and practical examinations. Examiners will include
local and foreign examiners from recognised radiology
teaching institutions.
The
radiologist also undergoes training in physics,
radiobiology and radiation protection. They will have to
pass examinations in these subjects and therefore are able
to weigh the benefit-risk consideration when it comes to
procedures requiring radiation. In the absence of medical
physicists, they will be in charge of radiation protection
in a radiology department. As such, you can be reassured
that they use and treat all procedures involving radiation
with respect. Radiologists in Malaysia also adopt the
principle of ALARA, which means, “ As Low As Reasonably
Achievable”.
After
graduating from their course in Radiology, they have to
serve another 6 months under supervision in recognised
centres before they are gazetted (recognised as specialists)
by the Ministry of Health. If the radiologist is trained
overseas, he/she will have to work in a recognised hospital
in Malaysia for 1 year and then, a further 6 months for
gazettement. If they have worked in a recognised centre
overseas they may be given exemption by the Ministry of Health,
on a case-by-case basis.
Therefore,
the radiologist would have gone through many years of
training. As in other fields of medicine, the radiologist
will have to continue to update, improve, upgrade their
knowledge through Continuous Medical Education programmes.
In some countries (this has already been proposed in
Malaysia), subspecialisation into the various fields in
Radiology is available.
As
Malaysia has relatively few radiologists, we have not seen
an explosion of subspecialties in Radiology. In the more
developed countries, as the field grows even larger with the
newer imaging studies, radiologists have become even more
specialised. Now there are neuroradiologists, ultrasound,
MRI and CT specialists, mammographers, GI radiologists and
others.
Currently,
most radiologists in Malaysia are “general” radiologists
with special interests in fields such as mammography, interventional
radiology, neuroradiology (specialising in the
central nervous system ) and paediatric radiology (specialising
in imaging in children).
A
radiologist may act as a consultant to another doctor caring
for the patient or act as one of the doctors in the care of
a patient. They may have an active role to play in a team
approach for the patient, such as in the management of
breast cancer. They may be integral in the management and
treatment of a patient in interventional radiology.
Radiologists
interpret X-ray images called radiographs, Ultrasound, MRI,
CT, perform imaging procedures and procedures requiring
imaging guidance as well as other special procedures. They
are responsible for supervising all procedures in the
radiology department. They may also interpret Nuclear
Medicine tests, although most would have undergone further
training in Nuclear Medicine Imaging if they manage the
department of nuclear imaging.
The
important and emerging field of interventional radiology
places specially trained radiologists in a position that is
somewhat like the surgeon’s. General radiologists may
perform the simpler procedures such as draining fluid
collections and biopsy lesions with needles. However, more
specialised training is essential for the more complex and
important areas such as the brain, complex procedures such
as dilating arteries, placing stents across “narrowed”
structures, blocking abnormal blood vessel lesions and
treating large inoperable tumours.
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The
picture of Dr Stella Jones, used to illustrate this topic at
the beginning of this article (used with permission from
the American
College of Radiology) answers this question very
concisely. “Without
a radiologist, you may be operating in the dark”.
Although
in general, doctors may be able to interpret chest x-rays,
orthopaedic surgeons can read bone x-rays, just to cite a
few examples, there are very few that have become
“expert” with the newer modalities of ultrasound, CT,
and MRI. In addition, because the radiologist is able to
utilise imaging modalities to the best advantage, they would
best be able to advise what imaging technique and what
procedures would help your doctor to get to the root of the
diagnosis.
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