Patent ID: 6028429
Filing Date: 2000-02-22
Classification: G01R

Abstract:
Magnetic resonance apparatus comprising:(a) field applying apparatus including means for defining a subject-receiving space, and means for directing magnetic flux into said subject-receiving space, said field applying apparatus including an electrically conductive element defining a conductive surface adjacent the subject-receiving space;(b) a composite antenna for transmission of radiofrequency (""RF"") radiation into said subject-receiving space or reception of radiofrequency radiation from said subject-receiving space, said composite antenna including an active coil and an isolated loop coil which is not conductively connected to said conductive surface, at least a part of said isolated loop coil being disposed adjacent to said conductive surface, said isolated loop coil being inductively coupled to said active coil; and(c) a transmitter or receiver connected said active coil.