| 摘要 |
A method and apparatus for obtaining a magnetic resonance image of a sample by applying a radio frequency signal to a sample containing magnetically labelled cells or tissues in order to heat the magnetically labelled cells or tissues and applying a sequence of radio frequency pulses to the sample to obtain magnetic resonance signals from the sample. Heating the magnetically labelled cells or tissues causes them to function as positive contrast agents providing positive image contrast in an image generated from the magnetic resonance signals. |
