Fig. 1

7T (a–c) and 3T (d, e) MRI images of a 67-year-old female with an invasive lobular carcinoma in her right breast. Transverse image of 2nd post contrast-injection series (a, d) shows an irregular mass lesion with spiculated margins (arrows) on both field strengths. Inset shows zoomed-in image. Ultra-high resolution 7T image of the same slice (b). The kinetic curve assessment showed an initial rapid rise and wash-out pattern in the delayed phase on both field strengths (c, e). Both observers rated the lesion as BI-RADS 5