Laser ablation and the need for intra-arterial imaging |
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Authors: | C Borst R Rienks W P T M Mali and L van Erven |
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Institution: | (1) Department of Cardiology, Heart-Lung Institute, the Netherlands;(2) Interuniversity Cardiology Institute of the Netherlands, the Netherlands;(3) Department of Radiology, University Hospital Utrecht, Catharijnesingel 101, 3511 GV Utrecht, The Netherlands |
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Abstract: | In 48 patients with severe claudication due to a total obstruction of the femoropopliteal artery, percutaneous recanalization was attempted with a 2.2 mm diameter rounded sapphire contact probe in conjunction with a continuous wave Nd:YAG laser. In eight patients the contact probe laser catheter took a subintimal course that could not be redressed. Laser recanalization needs high-resolution diagnostic information on the complex anatomy of the obstruction. Intra-arterial ultrasound imaging may provide the necessary information to evaluate, monitor or guide novel angioplasty techniques. The design of an ultrasound catheter which combines high-resolution diagnostic imaging with steerability, flexibility and controlled ablation is now the major engineering challenge in interventional cardiology. |
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