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.
16,917 results
Article
Portal hypertension
Portal hypertension is defined as a hepatic venous pressure gradient (HVPG) >5 mmHg. Hepatic venous pressure gradient is a surrogate for the portosystemic pressure gradient. Clinically significant portal hypertension is defined as a gradient >10 mmHg and variceal bleeding may occur at a gradient...
Article
Os peroneum
An os peroneum is a small accessory bone of the foot located at the lateral aspect of the cuboid within the substance of the fibularis longus tendon as it arches around the cuboid.
Epidemiology
It is a very common anatomical variant, seen in up to 26% of feet 1.
Differential diagnosis
It sho...
Article
Spigelian hernia
Spigelian hernias (alternative plural: herniae), also known as lateral ventral hernias, are a type of abdominal hernia along the semilunar line, resulting in herniation between the muscles of the abdominal wall.
Epidemiology
They are rare and account for ~1% (range 0.1-2%) of ventral hernias 2...
Article
Rectal cancer
Rectal cancer, although sharing many of the features of generic colorectal carcinoma (CRC), has different preoperative imaging assessment, with MRI rectum as the mainstay for local staging, and distinct surgical techniques (i.e. total mesorectal excision).
Epidemiology
Rectal cancer is genera...
Article
Rectal cancer (staging)
Staging of rectal cancer uses the TNM staging system and strongly predicts the success, and rate, of local recurrence following rectal cancer resection. MRI is the modality of choice for the staging of rectal cancer, to guide surgical and non-surgical management options. MRI is used at diagnosis...
Article
Rectum
The rectum is the last part of the large intestine. It is located within the pelvis and is the continuation of the sigmoid colon after the rectosigmoid junction and continues as the anal canal at the anorectal angle created by puborectalis.
Gross anatomy
At the level of the S3 vertebral body,...
Article
Bicaudate index
The bicaudate index (BCI) is the ratio of width of two lateral ventricles at the level of the head of the caudate nucleus to distance between outer tables of skull at the same level. It can be a useful marker of ventricular volume and in the diagnosis of hydrocephalus.
See also
Evans' index
...
Article
Medical abbreviations and acronyms (B)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter B and may be encountered in medicine and radiology (please keep both the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q...
Article
Imaging technology article structure
Articles about imaging technology require a different structure than articles about a disease. Articles with this structure are generally assigned to the imaging technology section and may also be assigned to a specific system if appropriate.
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Article
Medical abbreviations and acronyms (C)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter C and may be encountered in medicine and radiology (please keep both the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q...
Article
Supratentorial intracranial mass in an adult (an approach)
The identification of a supratentorial intracranial mass in an adult is a fairly common clinical scenario, the appropriate management of which relies heavily on preoperative imaging. Often important clues will be present in the clinical history (e.g. immunosuppression, systemic malignancy, durat...
Article
Esophageal stent
Esophageal stents are a treatment option in patients with esophageal strictures. It is most commonly used for symptomatic relief in those with dysphagia secondary to malignancy. The stent is typically covered in nature and inserted endoscopically or fluoroscopically. The distal esophagus is the ...
Article
Cella media index
The cella media index (also known as Schiersmann's index) is one of the methods used to assess ventricle size with respect to brain tissue and cerebral atrophy. It is the ratio of biparietal diameter of skull to maximum external diameter of bodies of the lateral ventricles (cella media) 1.
A no...
Article
Dandy-Walker continuum
Dandy-Walker continuum, also referred to as Dandy-Walker spectrum or Dandy-Walker complex, corresponds to a group of disorders believed to represent a continuum spectrum of posterior fossa malformations, characterized by inferior vermian hypoplasia and incomplete formation of the fourth ventricl...
Article
Cerebellar hypoplasia
Cerebellar hypoplasia is a type of congenital morphological cerebellar abnormality in which the cerebellum has reduced volume, but a normal shape, and is stable over time 1,4. The pattern of volume loss may be regional (affecting only part of the cerebellum) or global.
Terminology
Global cere...
Article
Bronchopulmonary dysplasia
Bronchopulmonary dysplasia (BPD), particularly affects preterm infants causing significant morbidity and mortality.
Terminology
Bronchopulmonary dysplasia and chronic lung disease of prematurity (CLDP) have often been used interchangeably to describe the condition post-treatment of premature i...
Article
Multiple sclerosis
Multiple sclerosis (MS) is a relatively common acquired chronic demyelinating disease involving the central nervous system, and is the second most common cause of neurological impairment in young adults, after trauma 19. Characteristically, and by definition, multiple sclerosis is disseminated i...
Article
Behçet disease (CNS manifestations)
CNS manifestations of Behçet disease, also known as neuro-Behçet disease, corresponds to the neurological involvement of the systemic vasculitis Behçet disease and has a variety of manifestations.
For a discussion of the disease, in general, please refer to Behçet disease article.
Epidemiology...
Article
Inflammatory cerebral amyloid angiopathy
Inflammatory cerebral amyloid angiopathy is an uncommon cerebral amyloid deposition disease, closely related to the far more common non-inflammatory cerebral amyloid angiopathy, and can present as areas of vasogenic edema.
Terminology
The term "inflammatory cerebral amyloid angiopathy" can be ...
Article
Medical abbreviations and acronyms (P)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter P and may be encountered in medicine and radiology (please keep the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R ...