Neuroangiography suite is equipped with a GE DLX biplane digital
subtraction angiography (DSA) unit. The use of two x-ray tubes
simultaneously means that two projections may be acquired with a
single injection of contrast media, thus reducing the amount of
contrast material introduced into the patient.
uses x-rays and injected contrast media to demonstrate the arteries
and veins in real-time It is termed Neuro-angiogaphy when this
imaging technique is applied to the vessels in the brain.
and tiny tube, called a catheter, is introduced into the groin
artery of a patient and manipulated into the neck vessels providing
blood to the brain. With the catheter in place, contrast material is
then injected and multiple frames of x-ray images are taken at the
same time. The presence of contrast material highlights the
blood vessels on the x-ray images as it flows along with the
blood. To see these blood vessels clearer, Digital Subtraction
Angiography (DSA) uses computers to remove (subtract) bones and
other structures so that the blood vessels stand out.
is Neuroangiography performed?
DSA is used to
study the architecture of the blood vessels of the head, neck and
spine, detecting and diagnosing vascular abnormalities.
It can be performed when information on the vascular architectureof
the nervous system is needed and can yield valuable data in some
patients with the following: .
into the brain and spinal cord.
of the blood vessels of the neck.
due to blockage of blood vessel in brain.
due to blood vessel inflammation
rupture of blood vessels of the head.
and spinal tumours.
|Spasm causing narrowing
of brain blood vessels after brain haemorrhage
|As in any advanced
imaging techniques, the decision to proceed should be made with the
attending physician or surgeon.