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.
16,865 results found
Article
DeLee and Charnley and Gruen zones
DeLee and Charnley and Gruen classified the radiolucent lines between the total hip arthroplasty and the bone seen on the AP and lateral views of the operated hip in three acetabular zones and seven femoral zones, respectively.
Loosening induces the formation of a fibrous or 'synovial-like' mem...
Article
Hydrocephalus ex vacuo
Hydrocephalus ex vacuo, also known as compensatory enlargement of the CSF spaces, is a term used to describe the increase in the volume of CSF, characterized on images as an enlargement of cerebral ventricles and subarachnoid spaces, caused by encephalic volume loss.
Terminology
It can be clas...
Article
Capsular contracture
Capsular contractures are a potential complication of a breast implant and refer to a tightening and hardening of the capsule that surrounds a breast implant. It is a condition that can distort the shape and cause pain in the augmented breast. It seems to be the most common complication post-bre...
Article
Pleural thickening
Pleural thickening is a descriptive term given to describe any form of thickening involving either the parietal or visceral pleura.
It can occur with both benign and malignant pleural disease. According to etiology it may be classified as:
benign pleural thickening
following recurrent inflam...
Article
Renal tuberculosis
Renal tuberculosis, a subset of genitourinary tuberculosis, accounts for 15-20% of extra-pulmonary tuberculosis and can result in varied and striking radiographic appearances.
Tuberculosis can involve both the renal parenchyma and the collecting system (calyces, renal pelvis, ureter, bladder a...
Article
Round atelectasis
Round atelectasis, also known as rounded atelectasis, folded lung or Blesovsky syndrome, is an unusual type of lung atelectasis where there is infolding of a redundant pleura. The way the lung collapses can at times give a false mass-like appearance.
Epidemiology
Associations
Round atelectasi...
Article
Lateral medullary syndrome
Lateral medullary syndrome, also known as Wallenberg syndrome, is a clinical syndrome caused by acute ischemia or infarction of the lateral medulla oblongata due to occlusion of the intracranial portion of the vertebral artery, PICA or its branches 1-3.
Epidemiology
20% of ischemic strokes oc...
Article
CheckList for EvaluAtion of Radiomics research (CLEAR)
The CheckList for Evaluation of Radiomics Research (CLEAR) is a 58-item reporting guideline designed specifically for radiomics. It aims to improve the quality of reporting in radiomics research 1. CLEAR is endorsed by the European Society of Radiology (ESR) and the European Society of Medical I...
Article
Soft tissue abscess
Soft tissue abscesses are focal or localized collections of pus caused by an immune response to pathogenic microorganisms. They are surrounded by a peripheral rim or abscess membrane and can be found within the soft tissues in any part of the body 1.
Soft tissue abscesses include subcutaneous a...
Article
Ulcer (soft tissue)
The term ulcer refers to a break in the skin, epithelium, or mucous membrane resulting in discontinuity of the surface tissues, necrosis, and often pus formation 1.
Risk factors
immunocompromise (e.g. diabetes mellitus) 1
poor perfusion (e.g. peripheral vascular disease) 1,2
immobile patient...
Article
Sternoclavicular joint injection (technique)
Sternoclavicular joint (SCJ) injections under image guidance ensure precise delivery of an injectate into the joint and, importantly, that the needle is under direct visualization.
Indications
pain
arthropathy, e.g. osteoarthritis
diagnostic injection
Contraindications
Absolute
anaphylaxi...
Article
Knee arthroplasty (overview)
Knee arthroplasty is a common joint replacement procedure employed in the management of various pathologic conditions of the knee joint, most commonly osteoarthritis. Less common indications include inflammatory arthritis and following trauma 1.
Multiple types of knee arthroplasty have been dev...
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
Pulmonary artery catheter
Pulmonary artery catheters (PAC or Swan-Ganz catheters) are balloon flotation catheters that can be inserted simply, quickly, with little training and without fluoroscopic guidance, at the bedside, even in the seriously ill patient, into the pulmonary arteries.
Usage
Historically, pulmonary ar...
Article
Superior labral anterior posterior tear
Superior labral anterior posterior (SLAP) tears are injuries of the glenoid labrum, and can often be confused with a sublabral sulcus on MRI.
Pathology
SLAP tears involve the superior glenoid labrum, where the long head of biceps tendon inserts. They can extend into the tendon, involve the gl...
Article
Gout
Gout is a crystal arthropathy due to deposition of monosodium urate crystals in and around the joints.
Epidemiology
Typically occurs in those above 40 years. There is a strong male predilection of 20:1, with this predilection more pronounced in younger and middle-aged adults. In the elderly, t...
Article
Spiculated periosteal reaction
Spiculated periosteal reaction represents spicules of new bone-forming along vascular channels and the fibrous bands that anchor periosteum to bone (Sharpey fibers).
Pathology
A spiculated periosteal reaction signifies a rapid underlying process that prevents the formation of new bone under th...
Article
Corona mortis
Corona mortis, Latin for "crown of death", is a common variant vascular anastomosis between the external iliac artery or deep inferior epigastric artery and the obturator artery. It is reported to be present in a third of patients on routine multidetector CT examination 1,4. It is called as such...
Article
Brainstem stroke syndromes
Brainstem stroke syndromes, also known as crossed brainstem syndromes, refer to a group of syndromes that occur secondary to lesions, most commonly infarcts, of the brainstem.
Epidemiology
Although many different brainstem stroke syndromes have been classically described, the majority appear e...
Article
Medical abbreviations and acronyms (L)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter L 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 ...
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