Figure 1

Example of a localized breast spectrum acquired at 4 T. The image on the left indicates the voxel placement, which covers a rim-enhancing lesion of invasive ductal carcinoma. The water-suppressed spectrum on the right shows the resonances typically observed in malignant breast lesions. Quantifying the spectrum by using water as an internal reference produced a measurement of concentration of total choline-containing compounds of 4.4 ± 0.3 mmol/kg (± SD).