Table 2 The median values of the absolute deviations \(\delta _{V}\) between each Vw-map mean and the reference presented here depending on the ROI location, the size and the slice position. The median deviations for the combined scans are also listed. All values are given in %
From: Ventilation and perfusion MRI at a 0.35 T MR-Linac: feasibility and reproducibility study
| Â | Â | Median \(\varvec{\delta }_{\bf V}\) over volunteers in % | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Uncorrected | Â | ROI 1 | ROI 2 | ROI 3 | ROI 4 | ROI 5 | ROI 6 | |||||||
Aorta | Lung | Â | Aorta | Lung | Aorta | Lung | Aorta | Lung | Aorta | Lung | Aorta | Lung | Aorta | Lung |
24.9 | 35.6 | Small | 5.8 | 11.0 | 6.0 | 9.0 | 8.1 | 10.8 | 8.8 | 12.3 | 5.4 | 7.0 | 8.5 | 7.5 |
Large | 6.0 | 10.1 | 6.6 | 8.6 | 5.0 | 7.5 | 7.7 | 9.8 | 7.5 | 5.4 | 5.7 | 6.8 | ||
Median of aorta and lung slices | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
29.5 | Small | 8.3 | 7.7 | 9.3 | 9.3 | 6.4 | 8.1 | |||||||
Large | 7.4 | 7.0 | 6.5 | 8.6 | 6.6 | 5.7 | ||||||||