Local coil for detecting signal-to-noise ratio in MRI images of examination object i.e. patient, has adjusting unit adjusting mean radiation pattern relative to space verticals such that pattern forms preset polar angle with verticals

摘要

The coil (7) has a transmitter antenna (13) to receive and send a modulated carrier signal (S') in a beam lobe at a controlling and evaluating device of a magnetic resonance system. The beam lobe is covered in a vertical plane at a vertical angle and in a transverse plane at a transverse angle, where the vertical and transverse planes comprise a mean radiation pattern. An adjusting unit (20) always adjusts the pattern independent of the orientation of the local coil relative to space verticals, such that the pattern forms a preset polar angle with the verticals.