If the plaque is seen only on one of the reconstruction time-points, a motion artefact has to be expected mimicking the finding (Fig. 8).
However, for me, my artefacts have lost their juju.
The neural networks promise to be affective in eliminating motion artefacts, but it has not been yet currently used in the EGG setting [ 44].
Inspection of T1 data revealed 7 subjects (5 patients and 2 controls) had motion artefacts.
In particular, intubated patients were scanned during uninterrupted mechanical ventilation and this could have increased motion artefacts.
SDOCT images also have fewer motion artefacts than StratusOCT.
Seven additional carotid MRAs were excluded from the study: six were follow-up MRAs in the same patients and one MRA had major motion artefacts.
However, in comparative studies between non-contiguous HRCT and volumetric acquisition, authors have shown increased motion artefacts in non-contiguous HRCT compared to spiral/volume acquisition [25, 26].
It is possible to correct motion artefacts even after the perfusion scans have been performed using appropriate software for motion correction to increase the reliability of perfusion analysis using CT.
Breath-hold sequences are fast (15 20 s) and minimally affected from pulsatility and motion artefacts, but are limited in coverage, have a low signal-to-noise ratio (SNR) (as they are performed with few averages) and only allow application of a few b values.
