Articles
Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.
1,380 results found
Article
Angioplasty
Angioplasty, also called balloon angioplasty or percutaneous transluminal angioplasty (PTA), is a minimally invasive interventional procedure in which an inflatable balloon-tipped catheter is introduced through the skin into the vascular lumen to open a stenotic segment of the vessel. Angioplast...
Article
Superior mediastinum
The superior mediastinum is an artificially divided wedge-shaped compartment of the mediastinum located between the thoracic plane inferiorly and the thoracic inlet superiorly. The inferior mediastinum, comprising of the anterior, middle, and posterior parts, lies inferiorly.
Gross anatomy
Bou...
Article
Medial circumflex femoral artery
The medial circumflex femoral artery is usually a branch of the profunda femoris that arises close to its origin, usually before the origin of the lateral circumflex femoral artery. It provides blood to the femoral neck and damage to the artery or involvement of it in pathological processes may ...
Article
Descending branch of the lateral circumflex femoral artery
The descending branch of the lateral circumflex femoral artery descends from the lateral aspect of the femoral neck and extends as far as the knee where it provides blood to the patellar network (the complex arterial anastomosis around the knee).
Summary
origin: lateral circumflex femoral arte...
Article
Lateral circumflex femoral artery
The lateral circumflex femoral artery is a branch of the profunda femoris artery that arises from its lateral aspect just after the medial circumflex femoral artery.
While the medial circumflex runs posteriorly around the femoral neck, the lateral circumflex courses laterally from its origin an...
Article
Profunda femoris artery
The profunda femoris artery (also known as the deep femoral artery or deep artery of the thigh) is a branch of the femoral artery and is responsible for providing oxygenated blood to the deep structures of the thigh, including the femora.
Summary
origin: femoral artery
main branches
medial c...
Article
Pampiniform plexus
The pampiniform plexus (plural: plexuses) is the venous network of approximately 10 veins draining the testis and epididymis in males, and the ovary in females.
In females, the plexus draining the ovary is found within the broad ligament adjacent to the ovary and fallopian tube. Each network co...
Article
Pulmonary veins
The pulmonary veins drain oxygenated blood from the lungs to the left atrium. A small amount of blood is also drained from the lungs by the bronchial veins.
Gross anatomy
There are typically four pulmonary veins, two draining each lung:
right superior: drains the right upper and middle lobes
...
Article
Pulmonary epithelioid hemangioendothelioma
Pulmonary epithelioid hemangioendothelioma is a rare vascular tumor of the lung and/or pleura with low malignant potential.
Epidemiology
It is a rare tumor, with ~50 cases reported. Patient age at presentation ranges from 25-54 years old, with a female predilection.
Clinical presentation
Pul...
Article
Giant cell arteritis
Giant cell arteritis (GCA) (plural: arteritides) is a common granulomatous vasculitis affecting medium to large-sized arteries. It is also known as temporal arteritis or cranial arteritis, given its propensity to involve the extracranial external carotid artery branches such as the superficial t...
Article
Revised International Chapel Hill Consensus Conference nomenclature of vasculitides
The Revised International Chapel Hill Consensus Conference nomenclature of vasculitides was formed by experts from 12 different countries in the field of vasculitis as a proposed update to the original 1994 International Chapel Hill Consensus Conference nomenclature of vasculitides. This 2012 up...
Article
Artery of Percheron
The artery of Percheron is a variant of the posterior cerebral circulation characterized by a solitary arterial trunk that supplies blood to the paramedian thalami and the rostral midbrain bilaterally. From the original classification of arterial patterns at the origin of the paramedian arteries...
Article
Artery of Percheron territory infarct
Artery of Percheron territory infarct is rare, on account of the relative rarity of the artery of Percheron, and presents with a variety of signs and symptoms collectively termed the paramedian thalamic syndrome. It is a type of posterior circulation infarction.
On imaging, it is classically ch...
Article
Portal vein thrombosis
Portal vein thrombosis may be seen in a variety of clinical contexts, and when acute can be a life-threatening condition. It is a major cause of non-cirrhotic presinusoidal portal hypertension. Portal vein thrombus may be either bland and/or malignant (i.e. tumor thrombus), and it is a critical ...
Article
Modified treatment in cerebral infarction (mTICI) score
The modified treatment in cerebral infarction (mTICI) score was developed from the original thrombolysis in cerebral infarction (TICI) scale by a consensus group in 2013 1. The recommendations included a name change to better reflect the increasing use of endovascular clot retrieval for ischemic...
Article
Luetic aneurysm
Luetic aneurysms (also known as syphilitic aneurysms) are a type of aneurysm occurring usually secondary to syphilitic aortitis.
For a general discussion, and for links to other system-specific manifestations, please refer to the article on syphilis.
Pathology
The responsible organism is a ...
Article
Persistent otic artery
The persistent otic artery is one of the persistent carotid-vertebrobasilar anastomoses, although there is considerable controversy in regards to its existence. It is said to arise from the C2 (petrous) segment of the internal carotid artery within the carotid canal. This artery emerges from the...
Article
Persistent hypoglossal artery
A persistent hypoglossal artery is one of the persistent carotid-vertebrobasilar anastomoses. It is second in frequency to the trigeminal artery which is present approximately six times as often.
It arises from the distal cervical ICA segment, usually between the C1 and C3 vertebral level. Aft...
Article
Sinusoidal obstruction syndrome
Sinusoidal obstruction syndrome (SOS), previously known as hepatic veno-occlusive disease (VOD), is a condition arising from occlusion of hepatic venules.
Clinical presentation
right upper quadrant pain
painful hepatomegaly
ascites
abnormal liver function tests
Pathology
Toxic injury to l...
Article
Thoracic aorta
The thoracic aorta is the most superior division of the aorta and is divided into three sections:
ascending aorta
aortic arch
descending aorta
The thoracic aorta begins at the aortic valve, located obliquely just to the left of the midline at the level of the third intercostal space. It term...
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