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Abstract #2503

Resolving Arterial Phase in Dynamic Breast MRI Using a Fast TWIST Acquisition During Injection Delay

Karl-Heinz Herrmann1, Pascal A. Baltzer, Ines Krumbein, Christian Geppert2, Werner A. Kaiser, Jrgen R. Reichenbach1

1Medical Physics Group, Department of Diagnostic and Interventional Radiology, University Hospital Jena, Jena, Thringen, Germany; 2MR Oncology, Siemens Healthcare, Erlangen

In MR Mammography pathologic vascularisation is utilized for the diagnosis of tumors. Many standard dynamic MRM protocols contain a delay of 35s, during which the contrast agent is applied, between the native scan and the following multiple post-CA scans. This injection delay can be efficiently used to acquire additional dynamic data sets with both high temporal (5.7s) and spatial resolution (0.9x0.9x1.5mm) using a 3D gradient echo view sharing sequence with stochastic trajectories (TWIST). This allows to resolve the arterial phase of the contrast agents first pass and helps to detect anomalous arterial supply vessels to suspect lesions.