Table 3 Causes and solutions of DRA
From: Cardiovascular magnetic resonance physics for clinicians: part II
Artifact | Description | Solution |
|---|---|---|
Truncation | Under-sampling of high frequency data causes signal oscillations at high contrast boundaries | Increase image resolution: |
| Â | Â | a) Increase number of phase encoding lines with increased image time. |
| Â | Â | b) Use parallel imaging, with decreased SNR |
Susceptibility | Increased magnetic field distortions at boundaries and due to arrival of CA cause signal loss and voxel mismapping | a) Avoid bSSFP |
| Â | Â | b) Decrease CA concentration |
Motion | Discontinuities in k-space due to motion translate to banding at boundaries in the image. | a) Use sequential k-space ordering. |
| Â | Â | b) Use parallel imaging |