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.
16,833 results found
Article
Demyelinating disorders
Demyelinating disorders are a subgroup of white matter disorders characterized by the destruction or damage of normally myelinated structures. These disorders may be inflammatory, infective, ischemic or toxic in origin and include 1-7:
autoimmune demyelination
multiple sclerosis (MS)
Marburg ...
Article
Polycystic ovaries
Polycystic ovaries (PCO) or polycystic ovarian morphology (PCOM) is an imaging descriptor of a particular type of change in ovarian morphology. A proportion of women with polycystic ovaries will have the polycystic ovarian syndrome (PCOS), which in turn requires additional clinical, as well as b...
Article
West Point classification of humeral avulsion of the glenohumeral ligament
The West Point classification of humeral avulsion of the glenohumeral ligament (HAGL) was created to describe avulsion injuries of the inferior glenohumeral ligament (IGHL).
Classification
This classification has six types of lesions divided into two categories based on anterior or posterior i...
Article
Split pleura sign (empyema)
The split pleura sign is seen with pleural empyemas and is considered the most reliable CT sign helping to distinguish an empyema from a peripheral pulmonary abscess (see empyema vs pulmonary abscess) 1,2.
The sign results from fibrin coating both the parietal and visceral surfaces of the pleu...
Article
Mycetoma (lung)
A pulmonary mycetoma, also known as a fungus ball, is due to colonization of a pre-existing cavity by a fungus, usually a species of Aspergillus, in which case it is termed an aspergilloma 1.
Terminology
Pulmonary mycetoma is unrelated to soft-tissue mycetoma, also known as Madura foot. The la...
Article
Carotid web
Carotid webs, also known as carotid intimal variant fibromuscular dysplasia, are rare vascular pathologies of the internal carotid artery that are an important cause of cryptogenic and recurrent ischemic stroke.
Terminology
Carotid webs have had many different names in the literature, includin...
Article
Ischemic penumbra
Ischemic penumbra denotes the part of an acute ischemic stroke that is at risk of progressing to infarction but is still salvageable if reperfused. It is usually located around an infarct core which represents the tissue which has already infarcted or is going to infarct regardless of reperfusio...
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
Myxoid glioneuronal tumor
Myxoid glioneuronal tumor is a rare and low-grade tumor (WHO grade 1) that usually involve the septum pellucidum, corpus callosum, subcallosal area, periventricular white matter and septal nuclei 1.
Terminology
The histologic features of this tumor are similar to dysembryoplastic neuroepithel...
Article
Extensor compartments of the wrist
The forearm extensor tendonspass under the extensor retinaculum at the level of the wrist. The ligament is divided into six extensor compartments, separated by fibrous septa passing to the bones of the forearm 2.
Summary
The compartments in order from radial to ulnar are:
1st compartment:
ab...
Article
Carpal tunnel
The carpal tunnel is a fibro-osseous canal in the anterior (volar) wrist that acts as a passageway for structures between the anterior forearm and the hand.
Gross anatomy
Boundaries
superficial border (roof): flexor retinaculum
deep border (floor): carpal groove (formed by palmar aspect of c...
Article
Finger pulley injury
Finger pulley injuries can occur at any one of the five flexor tendon pulleys of the fingers, but most commonly affects the A2 pulley.
Clinical presentation
These are overwhelmingly the result of a discrete trauma occurring with the hand in a finger grip position. They are most frequently see...
Article
Normal upper limb imaging examples
This page lists examples of normal imaging of the upper limb, divided by region and modality.
Shoulder girdle
plain radiograph
sternoclavicular joint: example
clavicle: example, example 2, example 3
bilateral clavicle: example 1
acromioclavicular joint
example 1
example 2
shoulder
exam...
Article
Imaging technology article structure
Articles about imaging technology require a different structure than articles about 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
External calibration marker
An external calibration marker is a radiopaque object with a known size placed within the radiographic field to aid in orthopedic templating. It is important that they are not mistaken for a different type of foreign body.
Clinical use
The calibration marker, often a ball bearing or washer, ha...
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 ...
Article
Medical abbreviations and acronyms (E)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter E 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
Penetrating abdominopelvic trauma
Penetrating abdominopelvic trauma usually occur in the setting of gunshot and stab injuries and is associated with high morbidity and mortality. CT is the modality of choice in imaging if stable enough prior to surgery. The most common injuries include small bowel, large bowel, liver, spleen and...
Article
Testicular cancer
Testicular cancers are the most common malignancy in men between the ages of 20 and 34 years.
Epidemiology
Testicular cancer is uncommon, accounting for less than 1% of all internal organ malignancies 2.
The commonest histology of the tumor varies with the age of affected individuals. Over 90...
Article
Maxilla
The maxillae (or maxillary bones) are a pair of symmetrical bones joined at the midline, which form the middle third of the face. Each maxilla forms the floor of the nasal cavity and parts of its lateral wall and roof, the roof of the oral cavity, contains the maxillary sinus, and contributes mo...