FIELD: physics.
SUBSTANCE: use: to obtain magnetic resonance data from a patient. Summary of invention consists in using magnetic resonance system for obtaining magnetic resonant data from a patient within the measurement zone in accordance with the magnetic resonance technique of digital fingerprints. Pulse train comprises a series of pulses. Each repetition of a pulse sequence has a repetition time selected from distribution of repetition times. Each repetition of a pulse sequence comprises a radio-frequency pulse selected from distribution of radio-frequency pulses. Distribution of radio-frequency pulses causes magnetic spins to turn to distribution of spin angles, and each repetition of a pulse train comprises a sampling event at sampling time selected from distribution of sampling times. Each repetition of a sequence of pulses for a sequence of pulses comprises first 180-degree RF pulse, presented in a first time interval between a radio-frequency pulse and a sampling event, for reorientation of the magnetic resonance signal. Each repetition of a sequence of pulses for a sequence of pulses comprises second 180-degree RF pulse presented in the second time mid between the sampling event and the beginning of the next repetition of pulses.
EFFECT: technical result is possibility of accurate determination of composition of volume element.
14 cl, 3 dwg
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Authors
Dates
2019-07-05—Published
2015-11-05—Filed