Ventilation and perfusion MRI at a 0.35 T MR-Linac: feasibility and reproducibility study

Radiation Oncology

Table 3 The median values of the absolute deviations \(\delta _{Q}\) of all volunteers Qw-maps for each ROI size and location as well as slice position. The median deviations for the combined scans are also listed. All values are given in %

			Median \(\varvec{\delta }_{\bf Q}\) over volunteers in %
Uncorrected			ROI 1		ROI 2		ROI 3		ROI 4		ROI 5		ROI 6
Aorta	Lung		Aorta	Lung	Aorta	Lung	Aorta	Lung	Aorta	Lung	Aorta	Lung	Aorta	Lung
11.0	8.8	Small	12.3	11.4	8.9	9.3	6.2	12.5	9.7	14.4	7.5	9.7	10.8	6.2
11.0	8.8	Large	12.1	11.2	5.9	11.7	6.3	8.8	11.4	11.2	4.9	5.7	6.9	10.4

Median of aorta and lung slices
10.2		Small	11.9		9.0		9.7		13.1		8.2		7.6
10.2		Large	11.6		7.6		8.2		11.3		5.3		7.9

ISSN: 1748-717X