Correction of diffusion-weighted magnetic resonance imaging for brachytherapy of locally advanced cervical cancer

Figures & data

Figure 1. Mean Δtandem center for all MRI examinations as a function of position in millimeters from the top of the applicator ring for the non-corrected DW-MRI (red), B₀M (blue) and DIR (black). The error bars represent the standard deviation.

Figure 2. DW-MRI, b = 0 s/mm², for the three different image sets with GTV (blue contour) and delineated tandem center (yellow contour): (a) non-corrected with full FOV where the white square indicate the zoomed in area shown in the three other images: (b) non-corrected, (c) B₀M, (d) DIR.

Table I. Displacement of the applicator tandem center.

	Non-corrected Mean ± SD	B0M Mean ± SD	DIR Mean ± SD
Δx (LR) (mm)	1.3 ± 1.2	1.3 ± 1.1	0.5 ± 0.6*
Δy (AP) (mm)	2.3 ± 1.2	0.7 ± 2.0*	0.7 ± 1.0*
Δtandem center (mm)	3.3 ± 0.9	2.9 ± 1.0	1.9 ± 0.6*

*Significant difference (p < 0.05) when compared to corresponding value for non-corrected DW-EPI (paired Student's t-test).