The goal of this study is to test if a new type of MRI scanner, called Field-Cycling Imaging (FCI), can accurately estimate tumour size in patients with a type of breast cancer called ductal carcinoma in situ (DCIS). The main question it aims to answer is: Can FCI accurately estimate DCIS lesion size compared with histology results? Participants will have a standard MRI scan and an FCI scan before undergoing surgery to remove the tumour.
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Accuracy of DCIS lesion size estimation using FCI, validated against histopathological measurements (gold standard).
Timeframe: Baseline