Method and device for the volume-selective extraction of a magnetic resonance spectrum by Hartmann-Hahn transfer

摘要

An object is placed within the field of magnetic coils which generate a steady uniform magnetic field. The object contains nuclear spins of coupled first and second types of nucleus, for example, CHn in which C is a 13C carbon isotope and H is a 1H proton. Magnetic resonance signals are generated in the object by RF pulses. Pulse and gradient sequences are generated for providing magnetization transfer from the first nucleus to the second nucleus via first and second channels. A display displays spectra formed from resonance signals processed by a programmed processor via Fourier tranformation of sampled values. A pick up coil is tuned to receive the signals from a corresponding nucleus which is processed by a corresponding channel. The process is volume selective combined with a Hartmann-Hahn transfer sequence.