Diagnosis of cerebrovascular abnormalities in patients with headache by magnetic resonance angiography

The article was professionally consulted by Dr., Doctor Tran Nhu Tu - Head of Diagnostic Imaging - Vinmec Danang International General Hospital.

Magnetic resonance imaging (MRI) can help diagnose neurological, spine, disc, musculoskeletal, and musculoskeletal diseases, early detection of cancers.... Especially magnetic resonance imaging. Magnetic resonance Angiography (MRA) is a modern method applied in many developed countries around the world to help early detect diseases related to cerebrovascular abnormalities.

1. What is cerebral vascular magnetic resonance imaging?

Magnetic Resonance Angiography (MRA) is an advanced non-invasive imaging technique that does not use X-rays to examine cerebral blood vessels. Modern methods allow no intravenous contrast to be used for vascular visualization (required for DSA or CTA). A scanner is used to take pictures of the blood vessels, which are then reconstructed in 3D using computer software.
Thanks to this 3-D image, doctors can accurately diagnose the structure of blood vessels in some diseases such as aneurysms, intracranial or extracranial stenosis, (risk) stroke...
Cộng hưởng từ tưới máu não
Cộng hưởng từ tưới máu não

2. Indications and contraindications for cerebrovascular magnetic resonance imaging

Currently, cerebral vascular magnetic resonance imaging is indicated for the following cases:
People with frequent headaches: to assess the circulatory capacity of cerebral blood vessels, early detection of abnormalities usually cerebrovascular. Cerebral vascular magnetic resonance imaging combined with brain magnetic resonance imaging at the same time helps to detect brain tumors, white matter pathology, congenital abnormalities, cerebrovascular accidents... Cerebral vascular magnetic resonance imaging For the diagnosis of cerebrovascular abnormalities: is a very useful method for screening in asymptomatic people or in those at risk for cerebral aneurysms, cerebral artery stenosis/occlusion. This will help patients proactively prevent the risk of stroke. Acute occult cerebral infarction: magnetic resonance imaging allows earlier diagnosis of cerebral infarction than computed tomography. Cerebral angiography in combination with cerebral perfusion scan (perfusion) allows very early diagnosis of fulminant cerebral infarction, detection of blocked and narrowed blood vessels for timely intervention for patients. Brain tumor: Investigation of tumor perfusion and blood vessels feeding the tumor. Contraindications
People who are wearing electronic devices such as pacemakers, defibrillators, cochlear implants,... Endoscopic metal surgical clips, eye sockets and blood vessels under 6 months . Severe cases need resuscitation equipment nearby. Metal surgical forceps more than 6 months.

3. Pros and cons of cerebral vascular magnetic resonance imaging

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Chụp cộng hưởng từ mạch máu não giúp ánh giá kịp thời và nhanh chóng về lưu lượng máu

Can survey cerebral blood vessels without using intravenous contrast No radiation Gives clear images. Prompt and rapid assessment of blood flow (4 weeks post-treatment). Assessing the effectiveness of treatment earlier, thereby having a timely plan for the next treatment (if necessary). Cons:
Cerebral vascular magnetic resonance imaging has a number of contraindications as above. In that case, a CT angiogram of the brain can be substituted. The examination time is longer than a tomography scan (if the cranial scan is combined with cerebral angiography, it will take about 30 minutes) Vinmec Danang International General Hospital actually Perform routine cerebral vascular magnetic resonance imaging techniques in the screening of cerebrovascular abnormalities. Many cases of cerebrovascular malformations have been detected in patients with only headache and early intervention has solved the risk of brain aneurysm rupture causing very severe stroke or death.
With the generation of the 3.0 Tesla magnetic resonance machine, the silent technology of GE, USA, has created absolute comfort for the patient when examining because there is absolutely no annoying noise when taking pictures. Magnetic Resonance.

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