Patent ID: 7633294
Filing Date: 2009-12-15
Classification: G01R

Abstract:
1. A radio frequency coil for magnetic resonance imaging, the coil comprising: an active coil member defining an imaging volume, the active coil member having a first open end with a first cross sectional dimension; and a shield coil member substantially surrounding the active coil member, the shield coil member having a constricted open end arranged proximate to the first open end of the active coil member with a constricted cross sectional dimension less than a cross-sectional dimension of the shield coil member; wherein the active coil member and the shield coil member define concentric generally cylindrical shapes, the constricted open end of the shield coil member includes a flange having an inner diameter defining the constricted cross sectional dimension, and the flange includes one or more detachable flange members that are detachable from the generally cylindrical shield coil member to provide a larger access opening for the radio frequency coil.