Fig. 2.

Parametric maps of the bi-exponential and stretched-exponential models in the same female patient as in Fig. 1: a D _t = 0.80 ± 0.28 × 10⁻³ mm²/s, b ƒ = 11.8 ± 1.3 %, c DDC = 0.98 ± 0.12 × 10⁻³ mm²/s, d α = 0.84 ± 0.18. It should be noted that the α values in tumours express the intravoxel heterogeneity, whereas the other maps show intervoxel heterogeneity between tissues. At histopathology, the lesion was identified as a grade 3 invasive ductal carcinoma of TNBC subtype. The patient underwent wide local excision of the lesion. On the excision specimen, no invasive components were seen and the patient was considered a complete pathological responder to NACT