Tissue visualization and manipulation systems are described herein. Such a system may include a deployment catheter and an attached imaging hood deployable into an expanded configuration. In use, the imaging hood is placed against or adjacent to a region of tissue to be imaged in a body lumen that is...http://www.google.fr/patents/US20110060227?utm_source=gb-gplus-shareBrevet US20110060227 - TISSUE VISUALIZATION AND MANIPULATION SYSTEM