intra-cranial abnormality may be detected on prenatal ultrasound
or MRI. After birth, this pulsatile flow can be detected by a
transcranial doppler. If the neonate presents with heart
failure, a cardiac echo will be done to establish the severity.
A MRI will be done to
establish the venous and arterial vascular anatomy. The MRI will
also assess the status of the surrounding brain, which may be
abnormal secondary to ischemia or hemorrhage.
A MRA may be done to
depict the arterial feeders and venous drainage pattern of the
An angiogram will be
done if the patient requires embolization. This involves a small
incision in the groin area and placing a small catheter in the
femoral artery. This catheter is guided to the brain arteries
and images are taken after x-ray contrast is injected in the
catheter to assess the blood vessels. This test will show the
vascular anatomy and the flow dynamics of the blood.