Determination of excitation profiles of excitation pulses in the magnet resonance art

摘要

The method according to the invention for the determination of excitation profiles of excitation pulses in a magnetic resonance system, comprises the steps:– Placing a homogeneous phantom (p) in the measuring volume (m) of the magnetic resonance system (23),– Receiving at least one measuring data set of the phantom (p) by means of a test - pulse sequence, the excitation pulse (a) comprises an excitation pulse (a), whose excitation profile is to be determined, wherein during said irradiating of the excitation pulse (a) a test - gradient (gt) is connected in full strength,– Determining a intensity profile of at least one recorded measuring data record in the direction in which the test - gradient was switched,– Determining the excitation profile of the excitation pulse (a) based on the calculated intensity profile,– Storing the specific excitation profile.The method according to the invention permits a rapid determination of excitation profiles with a high degree of accuracy, which can be easily can be carried out at different magnetic resonance systems. The stored excitation profiles go can be easily, so as to fit for each magnetic resonance system, in the above mentioned correction methods are integrated.