Cerebral angiography

angiographybrainCerebral angiogram
Cerebral angiography is a form of angiography which provides images of blood vessels in and around the brain, thereby allowing detection of abnormalities such as arteriovenous malformations and aneurysms.wikipedia
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Angiography

angiogramarteriographyangiographic
Cerebral angiography is a form of angiography which provides images of blood vessels in and around the brain, thereby allowing detection of abnormalities such as arteriovenous malformations and aneurysms.
The technique was first developed in 1927 by the Portuguese physician and neurologist Egas Moniz at the University of Lisbon to provide contrasted x-ray cerebral angiography in order to diagnose several kinds of nervous diseases, such as tumors, artery disease and arteriovenous malformations.

António Egas Moniz

Egas MonizAntónio Caetano Egas MonizAntonio Egas Moniz
It was pioneered in 1927 by the Portuguese neurologist Egas Moniz at the University of Lisbon, who also helped develop thorotrast for use in the procedure.
António Caetano de Abreu Freire Egas Moniz (29 November 1874 – 13 December 1955), known as Egas Moniz, was a Portuguese neurologist and the developer of cerebral angiography.

Mass effect (medicine)

mass effectmass lesionmass effects
Prior to the advent of modern neuoroimaging techniques such as MRI and CT in the mid-1970s, cerebral angiographies were frequently employed as a tool to infer the existence and location of certain kinds of lesions and hematomas by looking for secondary vascular displacement caused by the mass effect related to these medical conditions.
Therefore in those days, the mass effect of these abnormalities on surrounding structures was sometimes used to indirectly infer the existence of the primary abnormalities themselves, for example by using a cerebral angiography to observe the secondary vascular displacement caused by a subdural hematoma pushing on the brain, or by looking for a distortion caused by a tumor on the normal outline of the ventricles as depicted on a pneumoencephalogram.

Arteriovenous malformation

arteriovenous malformationsAVMAVMs
Cerebral angiography is a form of angiography which provides images of blood vessels in and around the brain, thereby allowing detection of abnormalities such as arteriovenous malformations and aneurysms.

Aneurysm

aneurysmsaneurismruptured aneurysm
Cerebral angiography is a form of angiography which provides images of blood vessels in and around the brain, thereby allowing detection of abnormalities such as arteriovenous malformations and aneurysms. Another type of treatment possible by angiography (if the images reveal an aneurysm) is the introduction of metal coils through the catheter already in place and maneuvered to the site of aneurysm; over time these coils encourage formation of connective tissue at the site, strengthening the vessel walls.

University of Lisbon

LisbonUniversidade de LisboaFaculdade de Ciências da Universidade de Lisboa
It was pioneered in 1927 by the Portuguese neurologist Egas Moniz at the University of Lisbon, who also helped develop thorotrast for use in the procedure.

Thorotrast

a colloidal dispersion of thorium-232 dioxide
It was pioneered in 1927 by the Portuguese neurologist Egas Moniz at the University of Lisbon, who also helped develop thorotrast for use in the procedure.

Catheter

catheterscatheterizationindwelling catheter
Typically a catheter is inserted into a large artery (such as the femoral artery) and threaded through the circulatory system to the carotid artery, where a contrast agent is injected.

Femoral artery

femoralsuperficial femoral arteryfemoral arteries
Typically a catheter is inserted into a large artery (such as the femoral artery) and threaded through the circulatory system to the carotid artery, where a contrast agent is injected.

Common carotid artery

carotidcarotid arteriescarotid artery
Typically a catheter is inserted into a large artery (such as the femoral artery) and threaded through the circulatory system to the carotid artery, where a contrast agent is injected.

Contrast agent

contrast mediumcontrast mediacontrast agents
Typically a catheter is inserted into a large artery (such as the femoral artery) and threaded through the circulatory system to the carotid artery, where a contrast agent is injected.

Radiography

radiographradiographicradiographs
A series of radiographs are taken as the contrast agent spreads through the brain's arterial system, then a second series as it reaches the venous system.

Computed tomography angiography

CT angiographyCTcomputed tomographic angiography
For some applications cerebral angiography may yield better images than less invasive methods such as computed tomography angiography and magnetic resonance angiography.

Magnetic resonance angiography

magnetic resonance angiogramMRAmagnetic resonance
For some applications cerebral angiography may yield better images than less invasive methods such as computed tomography angiography and magnetic resonance angiography.

Connective tissue

fibrous tissuefibrous connective tissueconnective
Another type of treatment possible by angiography (if the images reveal an aneurysm) is the introduction of metal coils through the catheter already in place and maneuvered to the site of aneurysm; over time these coils encourage formation of connective tissue at the site, strengthening the vessel walls.

Brain death

brain deadbrain-deadbraindead
In some jurisdictions, cerebral angiography is required to confirm brain death.

Magnetic resonance imaging

MRImagnetic resonance imaging (MRI)magnetic resonance
Prior to the advent of modern neuoroimaging techniques such as MRI and CT in the mid-1970s, cerebral angiographies were frequently employed as a tool to infer the existence and location of certain kinds of lesions and hematomas by looking for secondary vascular displacement caused by the mass effect related to these medical conditions.

CT scan

computed tomographyCTcomputerized tomography
Prior to the advent of modern neuoroimaging techniques such as MRI and CT in the mid-1970s, cerebral angiographies were frequently employed as a tool to infer the existence and location of certain kinds of lesions and hematomas by looking for secondary vascular displacement caused by the mass effect related to these medical conditions.

Posterior cerebral artery

Posterior cerebralposterior cerebral arteriesinfarction, posterior cerebral artery

1927 in science

1927
* António Egas Moniz develops cerebral angiography.