Fig. 2.

Biomarker development and evaluation data: visualization of the data split per type (TNBC, Luminal B), center (NKI, RUMC+SCDC, IMPRESS) and data subset (development, evaluation), starting from the exclusion of cases due to quality (in gray) and for training of the segmentation model (in blue, part of ${\text{dev}}_{\mathrm{seg}}^{\mathrm{train}}$) to the definition of the development (in green, ${\text{dev}}_{\mathrm{bm}}$) and evaluation (in yellow, ${\text{val}}_{\mathrm{int}}$) datasets. Shown is also the additional IMPRESS [24] evaluation data (in orange, ${\text{val}}_{\mathrm{ext}}$). Not included is the additional data for segmentation model training