| venography | <investigation> A special X-ray of the veins that is performed by first injecting a radiopaque contrast (shows up on X-ray) into the vein in question and then taking a conventional X-ray. Used to demonstrate a blockage of a vein. Commonly used in the lower extremities to diagnose deep venous thrombosis. (27 Sep 1997) |
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| vertebral venography | Radiographic demonstration of the epidural venous plexus by injection of contrast medium into the spinous process. (05 Mar 2000) |
| splenic portal venography | Introduction of radiopaque material into the spleen to obtain an X-ray visualization of the portal vessel of the portal circulation. Synonym: splenic portal venography. Origin: spleno-+ portography (05 Mar 2000) |
| infusions, intraosseous | The adminstration of medication or fluid through a needle directly into the bone marrow. The technique is especially useful in the management of paediatric emergencies when intravenous access to the systemic circulation is difficult. (12 Dec 1998) |
| intraosseous | Within bone. Synonym: intraosteal. Origin: intra-+ L. Os, bone (05 Mar 2000) |
| intraosseous anaesthesia | Rarely used method of general anaesthesia by injection of intravenous anaesthetic agent(s) into the medullary canal of long bones. Synonym: intraosseous anaesthesia. (05 Mar 2000) |
| intraosseous fixation | The use of internal metal plates, screws or rods to stabilise bone fragments. A procedure used to correct serious orthopaedic bone fractures that cannot be stabilised by casting or splinting. See: external fixation. (27 Sep 1997) |
| transosseous venography | Radiographic demonstration of veins that drain a bone's marrow, by injection of contrast medium into the marrow at an appropriate point, as in vertebral venography or azygography by rib injection. (05 Mar 2000) |