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.
16,878 results found
Article
Arterial vasocorona
The arterial vasocorona is part of the spinal cord blood supply and is formed by pial anastomoses between the anterior and posterior spinal arteries on the surface of the spinal cord. It encircles the cord and supplies the peripheral lateral aspect of the spinal cord.
Engorgement of arterial v...
Article
Omental infarction
Omental infarction is a rare cause of acute abdomen resulting from vascular compromise of the greater omentum. This condition has a non-specific clinical presentation and is usually managed conservatively.
Along with epiploic appendagitis and perigastric appendagitis, the term omental infarctio...
Article
MRI in patients with pacemaker systems
MRI in patients with cardiac implantable electronic devices (CIED) has increasingly become a requirement in radiological departments 1-8. Especially in the setting of patients with MR conditional pacemaker systems, where all the manufacturer's instructions are followed and a standardized institu...
Article
Endometrial polyp
Endometrial polyps are benign nodular protrusions of the endometrial surface, and one of the entities included in a differential of endometrial thickening. Endometrial polyps can either be sessile or pedunculated. They can often be suggested on ultrasound or MRI studies but may require sonohyste...
Article
Left hemicolectomy
Left hemicolectomy is a surgical procedure in which splenic flexure, descending colon, and a portion of the sigmoid colon are removed for radical treatment of various pathologies affecting the descending colon.
Indications
colon cancer
inflammatory bowel disease
isolated left diverticular di...
Article
Pseudoaneurysm of the mitral aortic intervalvular fibrosa
Pseudoaneurysm of the mitral aortic intervalvular fibrosa (p-MAIVF) refers to a pseudoaneurysm in the region of the avascular fibrous tissue between the mitral and aortic valves (i.e. the mitral-aortic intervalvular fibrosa (MAIVF)).
Pathology
Etiology
They may rarely occur as a result of inf...
Article
Neuroblastoma (staging)
There are two methods of neuroblastoma staging; the International Neuroblastoma Risk Group Staging System (INRGSS, based on imaging of pre-treatment patients), and the International Neuroblastoma Staging System (INSS, based on the outcomes of surgery).
International Neuroblastoma Risk Group St...
Article
Diffuse brainstem glioma (historical)
Diffuse brainstem gliomas or diffuse intrinsic pontine gliomas was a term used to describe infiltrating astrocytomas arising in the brainstem, usually in children. It is no longer recognized as a distinct entity, removed from the 2016 update to the WHO classification of CNS tumors replaced by a ...
Article
Diffuse midline glioma, H3 K27-altered
Diffuse midline glioma, H3 K27-altered is a specific entity that represents the majority of diffuse intrinsic pontine gliomas, although identical tumors are also found elsewhere in the midline (e.g. brainstem, spinal cord and thalamus) 1. They are aggressive tumors with a poor prognosis and are ...
Article
Stent graft–induced new entry tear
A stent graft–induced new entry (SINE) tear refers to a new tear within an existing dissection flap caused by a stent graft placement. It excludes those arising from natural disease progression or iatrogenic injury from the endovascular manipulation. It is a potential complication from a thoraci...
Article
Endovascular clot retrieval (ECR)
Endovascular clot retrieval (ECR), also known as mechanical thrombectomy (MT) or endovascular thrombectomy (EVT), is increasingly performed in patients presenting with large vessel occlusion (LVO), especially those with a large ischemic penumbra that is likely to progress to ischemic stroke. To ...
Article
False aneurysm
False aneurysms, also known as pseudoaneurysms, are abnormal outpouchings or dilatation of arteries which are bounded only by the tunica adventitia, the outermost layer of the arterial wall. These are distinguished from true aneurysms, which are bounded by all three layers of the arterial wall. ...
Article
Plexiform neurofibroma
Plexiform neurofibroma is an uncommon variant of neurofibroma, a benign tumor of peripheral nerves (WHO grade I), arising from a proliferation of all neural elements. Plexiform neurofibromas are essentially pathognomonic of neurofibromatosis type 1 (NF1). Unlike small sporadic localized neurofib...
Article
Mastectomy
Mastectomy is a surgical treatment for breast cancer in which the entire breast tissue is removed through a surgical procedure. Sometimes adjacent structures such as lymph nodes are removed to prevent recurrence or metastasis of the disease process. In some cases, mastectomy is done for the prev...
Article
Hepatic hemangioma
Hepatic hemangiomas or hepatic venous malformations are the most common benign vascular liver lesions. They are frequently diagnosed as an incidental finding on imaging, and most patients are asymptomatic. From a radiologic perspective, it is important to differentiate hemangiomas from hepatic m...
Article
Musculoskeletal imaging (dual-energy CT)
Dual-energy CT has a number of clinical applications in the assessment of the musculoskeletal system particularly in the realm of artefact reduction and material composition.
Detection of bone marrow edema
Similar to the concept of using virtual non-contrast imaging, virtual non-calcium images...
Article
Normal gastrointestinal tract imaging examples
This article lists examples of normal imaging of the gastrointestinal tract and surrounding structures, divided by modality.
Plain radiograph
abdominal film
example 1
example 2: erect and supine
example 3: pediatric
example 4: pediatric
example 5: young adult male
Barium studies
barium ...
Article
Submucosal uterine leiomyoma
Submucosal leiomyomas of the uterus refer to a subtype of uterine leiomyoma that primarily projects into the endometrial cavity; when the fibroid is predominantly within the cavity it is often called an intracavitary fibroid 7. They are the least common, albeit the most symptomatic, type of leio...
Article
Neuroblastoma
Neuroblastomas are tumors of neuroblastic origin. Although they may occur anywhere along the sympathetic chain, the vast majority arise from the adrenal gland.
They represent the most common extracranial solid childhood malignancy and are the third commonest childhood tumor after leukemia and b...
Article
Image intensifier
Image intensifiers are used to convert low-energy x-rays into visible light images. Image intensifiers are several thousand times more sensitive compared to standard 400-speed screen-film combinations, and in practice can produce images using several thousand times less radiation 3,4.
The bigge...
Unable to process the form. Check for errors and try again.