ANTENNA DEVICE FOR MR OBSERVATION

摘要

PURPOSE:To change the image pickup range for obtaining a MR tomographic image according to an object for observation with the same antenna probe without replacing the antenna probe and to prevent deterioration of S/N ratio. CONSTITUTION:An antenna device for MR observation comprises an antenna which is inserted in the interior of an object to be tested to receive a MR signal generated in the object to be tested and formed by plural loop antennas different in the opening area, and a switch for selecting at least one of plural antennas and leading a MR signal received by the selected antenna to a MR observation device.