Items tagged “cases”

5,932 results found
Article

Virtual non-contrast imaging

Virtual non-contrast imaging is an image post-processing technique used to create 'non-contrast' images of contrast-enhanced scans via the subtraction of iodine. It is an imaging technique unique to dual energy CT. Clinical applications Virtual non-contrast imaging has the potential to replac...
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Urinary system imaging (dual energy CT)

Dual-energy CT has a number of clinical applications in the assessment of the urinary system particularly in the realm of artefact reduction and material composition Renal stone composition Renal calculi are composed of different substances such as uric acid, calcium phosphate, calcium oxalate...
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Abdominal imaging (dual energy CT)

The role of dual energy CT is becoming increasingly more prevalent abdominal imaging due to the availability of scanners and increasing field of research. Acute bowel ischemia The addition of iodine maps and 40-keV monoenergetic images to standard single energy CT images was found to increase ...
Article

Benign asbestos-induced pleural effusions

Benign asbestos-induced pleural effusions are considered part of asbestos related benign pleural disease. Clinical presentation Patients may be asymptomatic or present with dyspnea or chest pain. Pathology They develop after an extended latency period post-asbestos exposure, with a median du...
Article

Condyle-C1 interval (CCI)

The condyle-C1 interval (CCI) is the measurement of the interval between condyle and C1 at four equidistant points on the joint surface in sagittal and coronal reconstructions of computed tomography. The CCI is reported to have a high lateral symmetry in children 1. Used with a cut-off of 4 mm,...
Article

Seminal vesicle abscess

Seminal vesical abscesses are a complication of seminal vesiculitis.  Clinical presentation The associated symptoms can be non-specific and are those typically associated with urinary tract infections: dysuria fever perineal or abdominal pain urinary retention ejaculation of purulent mate...
Article

Arachnodactyly

Arachnodactyly refers to the physical finding of elongated, thin "spider-like" fingers, which are a classic feature of Marfan disease, but by no means pathognomonic 1. Radiographic features The metacarpal index was historically-used as a radiographic criterion for arachnodactyly. To obtain it,...
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Passive atelectasis

Passive atelectasis, also known as relaxation atelectasis, refers to a form of lung atelectasis due to loss of the negative pressure state in the pleural space. With a loss of the negative intrapleural pressure, the lung is no longer held against the chest wall and is said to relax back to its n...
Article

Sjögren-Larsson syndrome

Sjögren-Larsson syndrome is a rare inherited autosomal recessive neurocutaneous syndrome and leukodystrophy characterized by the clinical triad of ichthyosis, intellectual disability, and spastic diplegia or tetraplegia. Epidemiology Although considered very rare, the exact prevalence is not k...
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Galloway-Mowat syndrome

Galloway-Mowat syndrome (GAMOS) is a rare autosomal recessive disorder characterized by nephrotic syndrome and central nervous system (CNS) abnormalities, namely microcephaly. Epidemiology Galloway-Mowat syndrome is considered extremely rare. Approximately 40 cases have been reported worldwide...
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Kugel's artery

An uncommon variant of coronary arterial anatomy, Kugel's artery was originally described as an anastomotic communication between branches of the proximal left circumflex artery with the distal right coronary artery. These coronary trunks often communicate indirectly through atrial anastomotic n...
Article

Neuroacanthocytosis syndromes

Neuroacanthocytosis syndromes (NAS), previously known collectively as Levine-Critchley syndrome, are characterized by basal ganglia degeneration, acanthocytosis, and normal serum lipoprotein. There are four core NAS: chorea-acanthocytosis (ChAc) McLeod syndrome (MLS) Huntington disease-like ...
Article

Aicardi-Goutières syndrome

Aicardi-Goutières syndrome is a rare hereditary neurodegenerative disease which usually presents in early infancy with systemic and central nervous system inflammatory syndrome characterized by hepatosplenomegaly, vasculopathy and encephalopathy. Many of the features are similar to congenital TO...
Article

Suboccipital triangle

The suboccipital triangles are a paired triangular-shaped space formed by the configuration of three paired muscles in the posterior neck between the occipital bone, C1 and C2. Gross Anatomy The suboccipital triangle has an inferomedial pointing apex (pointing towards the nuchal ligament) form...
Article

Metal fume fever

Metal fume fever is a (typically) self-limiting disease due to exposure to fumes emanating from working metal, e.g. welding. Polymer fume fever is a related, yet distinct, condition. Epidemiology Due to gradual improvements in health and safety over the past 100 or so years, a marked decline i...
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Chorea-acanthocytosis

Chorea-acanthocytosis (ChAc) is an autosomal recessive, progressive neurological disorder. It is the commonest of the four core neuroacanthocytosis syndromes (NAS). Symptomatology includes movement disorder, acanthocytosis, elevated creatinine kinase, and atrophy of the basal ganglia.  Epidemio...
Article

Intraparotid lymph nodes

Intraparotid lymph nodes are a paired group of cervical lymph nodes located within the parenchyma of the parotid glands. Gross anatomy Among the salivary glands, only the parotid glands have their own lymphatics due to their late encapsulation during embryologic development. Parotid nodes rec...
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ASAS sacroiliitis classification system

First published in 2009 with a revised consensus in 2016, the Assessment in SpondyloArthritis International Society (ASAS) classification system utilizes imaging features of the sacroiliac joints on MR imaging to assist in characterizing the presence of sacroiliitis. The ASAS classification is ...
Article

ASAS sacroiliitis classification system

First published in 2009 with a revised consensus in 2016, the Assessment in SpondyloArthritis International Society (ASAS) classification system utilizes imaging features of the sacroiliac joints on MR imaging to assist in characterizing the presence of sacroiliitis. The ASAS classification is ...
Article

Esophagitis

Esophagitis refers to inflammation of the esophagus. It can arise from a range of causes which include: infective esophagitis HIV esophagitis CMV esophagitis Herpes esophagitis Candida esophagitis acute phlegmonous esophagitis non infective esophagitis reflux esophagitis corrosive esoph...

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