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Imaging of a primary breast tumour on CT (A,D), (contrast-enhanced) MRI (B,E), and CBCT (C,F) scans indicating the difference in tumour visibility (inside the red circle) between these modalities in two different patients (A–C and D–F). (D–F) The marker inserted in the tumour medial in the left breast is observed as a void on MRI (indicated by the red circles).
