Method and device for generating a perfusion image of a body portion using magnetic resonance imaging

An MR device for obtaining images of a region of a body comprising:

• means for generating a substantially uniform steady magnetic field in the region of the body,
• means for generating temporary magnetic gradient fields,
• means for generating RF pulses,
• means for receiving MR signals,
• processing means for reconstructing an image from the MR signals received, and
• control means for supplying control signals to the means for generating temporary magnetic gradient fields and the means for generating RF pulses, so that according to the control signals:
• (i) a control data set is measured by generating a control. pulse sequence in a first portion of the body, and an MR-image sequence is generated for imaging of an third portion of the body,
• (ii) a labelled data set is measured by generating a labelling pulse sequence in a second portion of the body wherein a fluid flows towards the third portion, and the MR-image sequence is generated for imaging the third portion of the body, and
• (iii) a perfusion image of the fluid in the third portion of the body is reconstructed from a combination of the control data set and the labelled data set,
• wherein the labelling pulse sequence comprises a first selective RF pulse and a second RF pulse, the control pulse sequence comprises the first selective RF pulse and a third RF pulse, a phase of the second RF pulse being opposite to that of the third RF pulse.