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Fig. 4 | BMC Gastroenterology

Fig. 4

From: Quantitative assessment of the microstructure of the mesorectum with different prognostic statuses by intravoxel incoherent motion diffusion-weighed magnetic resonance imaging

Fig. 4

Measurement of IVIM parameters in the mesorectum in patients with positive mrEMVI. Sagittal T2-weighted imaging (a1) shows a tubular structure that contains a signal void (arrow). On coronal contrast-enhanced T1-weigheted imaging (a2), a small serpiginous vessel outside the tumour demonstrates an irregularly expanded contour (arrow). The ROIs in the MAT (b2 – b4) are located within 5 mm of the outline of the largest tumour segment, and the calculated IVIM parameters included D (1.45 × 10–3 mm2/s), D* (10.79 × 10–3 mm2/s), and f (0.15). The ROIs in the MDT (c2 – c4) are located contralateral to the tumour parenchyma as far as possible; D = 0.67 × 10–3 mm2/s, D* = 12.25 × 10–3 mm.2/s, and f = 0.34

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