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 edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

6 results found
Article

Imaging of gun shot injuries

Gun shot injuries often require imaging assessment, and this evaluation has both clinical relevance (assessment of organ damage, surgical planning and prognostication), and often also forensic implications. Pathology Mechanism of injury Some understanding of the factors that influence woundin...
Article

Increased bone age

A generalised acceleration in bone maturation can result from a number of aetiological factors. They include : endocrine disorders: idiopathic isosexual precocious puberty hypothalamic or parathalamic lesion with sexual precocity: e.g. craniopharyngioma astrocytoma hypothalamic hamartoma ...
Article

Increased heel pad thickness (mnemonic)

A mnemonic that can be used to remember the causes of increased heel pad thickness is: MAD COP Mnemonic M: myxoedema A: acromegaly D: phenytoin therapy C: callus O: obesity P: peripheral oedema
Article

Insall-Salvati ratio

The Insall-Salvati ratio or index is the ratio of the patella tendon length (TL) to the length of the patella (PL).  Insall-Salvati ratio This can be measured on a lateral knee x-ray or sagittal MRI. Ideally the knee is 30 degrees flexed.  Distance lines used to calculate Insall-Salvati ratio...
Article

Intervertebral disc calcification

Intervertebral disc calcification is seen with numerous conditions. degenerative: relatively common and may occur in up to 6% in routine abdominal radiographs in adults postoperative/traumatic ochronosis: very dense central (nucleus pulposus) calcification associated with osteopaenia; begins ...
Article

Intra-articular loose bodies

Intra-articular loose bodies can result from a variety of pathological processes. Use of the term loose is frowned upon by some because the fragments do not necessarily rattle around in the joint - the term intra-articular fragment is a safer alternative. Clinical presentation Patients may be...

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