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Audio Interchange File Format  |  1996-11-08  |  396.8 KB  |  1 channel  |  11,025 sample rate  |  18 seconds
Transcription: Angiography. The taking of x-ray pictures of blood vessels by injecting a radio opaque contrast agent into the blood vessel. Angiograms may be taken to determine a tumour's blood supply before surgery, to place a catheter or infusion pump, or to determine the site for other intra arterial procedures.