Jacob S. Koruth et al. JACEP 2015;1:306-314 Low-Intensity Collimated Ultrasound Fluoroscopic Images: Fluoroscopy Showing the Position of the Catheter in the Left Atrium To address the inferior common pulmonary vein (PV) of the pig, the manual deflecting section of the catheter must deflect approximately 180°. The robotically deflecting section, which contains the transducer, automatically scans the endocardial surface to acquire the ultrasound data. Jacob S. Koruth et al. JACEP 2015;1:306-314 American College of Cardiology Foundation