| angiogenesis factor | Substance causing proliferation of new blood vessels. It is found in tissues with high metabolic requirements, such as the retina, and in certain cancers. The factor is also released by hypoxic macrophages at the edges or outer surfaces of wounds and initiates revascularization in wound healing. (12 Dec 1998) |
|---|---|
| angiogenic | 1. Relating to angiogenesis. 2. Of vascular origin. (05 Mar 2000) |
| angiogenin | <protein> Polypeptide (14 kD) that induces the proliferation of endothelial cells, one of the components of tumour angiogenesis factor. It has sequence homology with pancreatic ribonuclease and has ribonucleolytic activity, although the biological relevance of this is unclear. (18 Nov 1997) |
| angioglioma | <tumour> A mixed glioma and angioma. (05 Mar 2000) |
| angiogliomatosis | Occurrence of multiple areas of proliferating capillaries and neuroglia or a condition of multiple angiogliomas. (05 Mar 2000) |
| angiogliosis | Glial scarring about a blood vessel or a condition of multiple angiogliomas. (05 Mar 2000) |
| angiogram | <investigation> A diagnostic procedure done in the X-ray department to visualize blood vessels following introduction of a contrast material into an artery. (16 Dec 1997) |
| angiographic | Relating to or utilizing angiography. (05 Mar 2000) |
| angiography | <investigation> A radiographic technique where a radio-opaque (shows up on X-ray) contrast material is injected into a blood vessel for the purpose of identifying its anatomy on X-ray. This technique is used to image arteries in the brain, heart, kidneys, gastrointestinal tract, aorta, neck (carotids), chest, limbs and pulmonary circuit. (27 Sep 1997) |
| angiography catheter | A thin-walled tube suitable for percutaneous puncture and powered injection of contrast media for radiography; catheter diameter is measured on the French scale. (05 Mar 2000) |
| angiography, digital subtraction | A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitised image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues. (12 Dec 1998) |
| angiohyalinosis | Hyaline degeneration of the walls of the blood vessels. Origin: angio-+ G. Hyalos, glass, + -osis, condition (05 Mar 2000) |
| angiohypertonia | Synonym: vasospasm. Origin: angio-+ G. Hyper, over, + tonos, tension (05 Mar 2000) |
| angiohypotonia | Synonym: vasoparalysis. Origin: angio-+ G. Hypo, under, + tonos, tension (05 Mar 2000) |
| angioid | Resembling blood vessels; an arborizing pattern. Origin: angio-+ G. Eidos, resemblance (05 Mar 2000) |