Feasibility of Contrast-Enhanced and High Resolution MR-Imaging in Patients with Suspicious Breast Lesions at 7 Tesla.

Bertine L. Stehouwer¹, Dennis W.J. Klomp¹, Peter R. Luijten¹, Karel A.F. Houwert², Paul J. van Diest³, Willem P.Th.M. Mali¹, Maurice A.A.J. van den Bosch¹, Wouter B. Veldhuis¹

Eighteen patients with 21 biopsied breast lesions were imaged at 7T. The protocol included a dynamic series consisting of 7 consecutive 3D T1-weighted turbo field echo sequences and ultra-high resolution imaging with a 0.45x0.57x0.45mm3 acquisition matrix. All 21 malignant lesions were scored according the BI-RADS-MRI criteria by two radiologists, independently, using the dynamic series. Subsequent ultra-high resolution imaging increased reader confidence in n=13 and=9 for the separate radiologists and changed interpretation in n=3 and n=5 cases for the radiologists. Overall, we showed the feasibility of clinical 7T CE breast MRI, and its amenability to BI-RADS-MRI conform analysis.