Articles
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16,895 results found
Article
Dixon method
The Dixon method, also known as the Dixon technique, is an MRI sequence based on chemical shift imaging and designed to achieve uniform fat suppression. It has been gaining popularity as it has some advantages over other fat suppression techniques, namely:
suppression of fat signal is more unif...
Article
Myocardial mapping
Myocardial mapping or parametric mapping of the heart is one of various magnetic resonance imaging techniques, which has evolved and been increasingly used in the last decade for non-invasive tissue characterization of the myocardium 1-5. Unlike normal T1-, T2- or T2*- images, parametric mapping...
Article
Suprascapular neuropathy
Suprascapular neuropathy or suprascapular nerve entrapment occurs if the suprascapular nerve is compressed as it passes through the suprascapular or spinoglenoid notch.
Epidemiology
Suprascapular nerve entrapment is a relatively rare but often overlooked cause of shoulder pain 1-3.
Risk facto...
Article
Coracoglenoid ligament
The coracoglenoid ligament is a strong extra-articular ligament within the anterosuperior capsuloligamentous complex of the shoulder 1,2.
Gross anatomy
originates from the middle of the superior or posterior surface of the coracoid process (often between the origins of coracoacromial and corac...
Article
Superior transverse scapular ligament
The superior transverse scapular ligament is a fibrous ligament over the superior aspect of the suprascapular notch 1-3.
Terminology
The superior transverse scapular ligament is sometimes just termed transverse scapular ligament, especially in settings where the inferior transverse scapular li...
Article
Inferior transverse scapular ligament
The inferior transverse scapular ligament, also known as the spinoglenoid ligament is a ligamentous structure with a variablly band-like triangular or quadrangular irregular shape located within the spinoglenoid notch of the scapula 1-3.
Gross anatomy
The inferior transverse scapular ligament ...
Article
Caplan syndrome
Caplan syndrome, also known as rheumatoid pneumoconiosis, is the combination of seropositive rheumatoid arthritis and pneumoconiosis.
Although first described in coal miners (coal workers' pneumoconiosis), it has subsequently been found in a variety of other pneumoconioses 2.
Epidemiology
Af...
Article
Depressed skull fracture
Depressed skull fractures result in the bone of the skull vault being folded (depressed) inward into the cerebral parenchyma. It is usually the result of a high energy impact to the skull.
Pathology
These mostly (~75%) occur in the frontoparietal region 3.
Associations
There are a number of ...
Article
Medical abbreviations and acronyms (M)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter M 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
Coracoid process
The coracoid process is a hook-like process on the superolateral edge of the scapula that projects anterolaterally.
Gross anatomy
Attachments
muscles:
coracobrachialis from the medial apex
short head of biceps brachii from the lateral apex
pectoralis minor from the medial and upper part
l...
Article
Suprascapular notch
The suprascapular notch is located on the superior aspect of the scapula, at the scapula's anterolateral aspect.
Gross anatomy
The suprascapular notch separates the superior border of the scapula from the coracoid process.
Relations and/or boundaries
The suprascapular nerve passes through t...
Article
Miliary opacities (lungs)
The term miliary opacities refers to innumerable, small 1-4 mm pulmonary nodules scattered throughout the lungs. It is useful to divide these patients into those who are febrile and those who are not.
Additionally, some miliary opacities are very dense, narrowing the differential - see multiple...
Article
Giant cell arteritis
Giant cell arteritis (GCA) is a common granulomatous vasculitis affecting medium to large-sized arteries. It is also known as temporal arteritis or cranial arteritis, given its propensity to involve the extracranial external carotid artery branches such as the superficial temporal artery.
Epid...
Article
Sonographic halo sign (disambiguation)
Sonographic halo sign can be useful in a number of situations:
hypoechoic halo sign (also known as target or bull's eye sign) in liver metastases: used in hepatobiliary imaging, is a concerning feature for malignant lesion if the lesion is a hyperechoic liver lesion 1,2
ultrasound halo in angi...
Article
Creutzfeldt-Jakob disease
Creutzfeldt-Jakob disease (CJD) is a transmissible spongiform encephalopathy that results in rapidly progressive dementia and death usually within a year from onset. The vast majority are sporadic, but familial and acquired forms are occasionally encountered.
On imaging, it classically manifest...
Article
Enchondromatosis
Enchondromatosis, also known as Ollier disease (see Terminology section), is a non-hereditary, sporadic, skeletal disorder characterized by multiple enchondromas principally located in the metaphyseal regions.
Terminology
Some authors make a distinction between Ollier disease and enchondromato...
Article
Chondrosarcoma
Chondrosarcomas are a heterogeneous group of malignant cartilaginous tumors most commonly found in older patients. They can arise de novo or secondary from an existing benign cartilaginous neoplasm. On imaging, these tumors have ring-and-arc chondroid matrix mineralization with aggressive featur...
Article
Thalassemia
Thalassemia is an autosomal recessive hemoglobinopathy first described in the Mediterranean region. The genetic defect causes a reduction in the rate of globin chain synthesis which causes the formation of abnormal hemoglobin molecules. The resultant microcytic anemia is the characteristic prese...
Article
Cerebral angiography
Cerebral angiography is an interventional procedure for the diagnosis and/or treatment of intracranial pathology.
Indications
Cerebral digital subtraction angiography (DSA) is indicated in a variety of settings including:
diagnosis and treatment of:
aneurysms 1
acute ischemic stroke
vascul...
Article
MR perfusion weighted imaging
Perfusion weighted imaging is a term used to denote a variety of MRI techniques able to give insights into the perfusion of tissues by blood.
There are three techniques in wide use to derive one or more perfusion values:
techniques
dynamic susceptibility contrast (DSC) MR perfusion
dynam...
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