Angioplasty. Coloured angiogram taken during a percutaneous transluminal coronary angioplasty (PTCA) to the right coronary artery. It is done to treat a severe stenosis (narrowing,upper centre left) caused by plaques of atheroma lining the inside of the artery; the blood flow is also impaired by a clot in the same area just below the stenosis. A special double lumen catheter (top centre inside the artery) is used with a cylindrical-shaped balloon surrounding a portion of it. The inflation of the balloon with a pressure up to 620,000 Pascal dilates the narrowed vessel. The large dark area at top centre is one of the heart's major blood vessels. See M560/171 which shows a post-operative angiogram | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fraser, Simon |
Taille de l’image : | 3678 px × 4854 px |
Model Release : | Non requis |
Property Release : | Non requis |
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