A simple high-frequency antenna for NMR imaging.
The classic whole-body or head antennas for NMR imaging do not resonate properly at higher frequencies. The high-frequency antenna presented is constructed from segments of transmission lines and is treated as a distributed parameter system. It has an RF magnetic response similar to that of the classic saddle-shaped antenna, has low exposed impedance to avoid dielectric losses in the patient, and does not disturb the magnetic field gradients. The implementation of a whole-body antenna for 64 MHz is described and tested.
Sergiadis
G
G
Aristotelian University of Thessaloniki, School of Electrical Engineering, Greece.
D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*