A method for determining the magnetization transfer constant with a spin echo imaging sequences

摘要

A method for determining a magnetization transfer constant, comprising the steps of:– Receiving a first mr - signal sequence of an object to be examined with a spin - echo imaging sequence based– Receiving a second mr - signal sequence of the examination subject, with a spin - echo imaging sequence with identical image based environment parameters such as in the case of the first mr - signal sequence with the exception that the energy of the hf - pulses for the excitation of the magnetization in the case of the first mr - signal sequence of the energy of the hf - pulses for the excitation of the magnetization in the case of the second mr - signal sequence, wherein the different energy of the hf - pulses at least by one of the following steps is achieved:– the use of different and - hf - pulses,– the use of hf - pulses with different time - bandwidth,– the use of different pulse durations for the excitation of the magnetization in the case of the first and the second mr - signal sequence and– Determining the magnetization transfer constant with the aid of a signal difference between the first and second nmr - signal sequence.