A procedure to find and test other people who may have been exposed to someone with an infectious disease. It is most often undertaken for STDs and is carried out without revealing the name of the infected person.

Any disease that is communicable.

A means of preventing pregnancy.

A term used to describe something that prevents pregnancy.

A substance taken (either by mouth or into a vein) by a person who is about to undergo an imaging investigation, to improve the visibility of the structures being imaged. Also known as contrast medium.

A substance taken (either by mouth or into a vein) by a person who is about to undergo an imaging investigation, to improve the visibility of the structures being imaged.

A deterioration in kidney function following the injection of contrast medium.

An X-ray that uses a substance given to improve the visibility of structures during imaging.

A virological test.

An abbreviation for chronic obstructive pulmonary disease.

The transparent, thin-walled dome that forms the front of the eyeball.

A genetic disorder that can lead to severe developmental problems.

Relating to the arteries supplying the heart itself.

An X-ray image of the coronary arteries, which is taken after introducing a catheter through a blood vessel and threading it towards the heart, then injecting a contrast medium to improve visibility.

A technique for X-ray imaging of the coronary arteries, which involves introducing a catheter through a blood vessel and threading it towards the heart, then injecting a contrast medium to improve visibility.

A measure of the calcium in the coronary arteries, which is detected by CT scanning and suggests the presence of atherosclerosis.

Narrowing of the blood vessels supplying the heart muscle, leading to symptoms such as angina and sometimes to a heart attack or myocardial infarction

Surgery that bypasses a blockage in a segment of an artery supplying the heart (coronary artery), using a section of a vein or artery from elsewhere in the body.

One of the two columns of erectile tissue located along the length of the penis.

The outer region of an organ.

A group of hormones that are produced by the adrenal glands, which sit on top of the kidneys.

A steroid hormone important for helping to regulate carbohydrate metabolism and the stress response.

Inflammation of a cartilage connecting a rib to the sternum, causing chest pain and sometimes swelling (Tietze's syndrome)

A sign that a doctor looks for when examining a swelling, especially a hernia. A positive cough impulse means that the swelling expands when the patient coughs.