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.

5 results found
Article

Angiotensin converting enzyme

Angiotensin converting enzyme (ACE) is a central component of the renin-angiotensin system (RAS) which assists in blood pressure control by regulating the volume of fluids in the body. Normal individuals may have a small volume of the angiotensin converting enzyme circulating in their blood. M...
Article

Creatine kinase

Creatine kinase (CK), also known as creatine phosphokinase (CPK), is a key enzyme, for energy production in mitochondria and muscle tissues. It is important as a diagnostic assay in clinical practice, primarily because inflamed/injured muscle releases creatine kinase into the circulation 1. Phy...
Article

Metaplasia

Metaplasia is a general pathology term that refers to process when one cell type is replaced by another. It usually occurs in the context of a changed cellular environment to which the new cell type is better adapted 1. Examples include 2-5: Barrett esophagus: normal squamous epithelium replace...
Article

Myocardial fiber disarray

Myocardial disarray, myocardial fiber disarray or cardiac myocyte disarray refers to bizarre disorganization and texture of cardiac myocyte bundles, individual cardiomyocytes and contractile elements within the sarcomeres. It is an important histological feature of hypertrophic cardiomyopathy wh...
Article

Starling forces

Starling forces describe the movement of fluids between the vasculature and interstitial spaces. Fluid movement is determined by the balance of hydrostatic and osmotic pressure gradients 1. Starling forces Net pressure = [ (Pc - Pi) - (pc - pi) ] where: Pc = hydrostatic pressure of the capil...

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