Abstract #3421

Simultaneous multislice diffusion weighted imaging in whole-body PET/MRI for accelerated multiparametric staging of oncologic patients.

Ferdinand Seith¹, Jana Taron¹, Christina Pfannenberg¹, Konstantin Nikolaou¹, Christina Schraml¹, and Petros Martirosian²

¹Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, Germany, Tuebingen, Germany, ²Section on Experimental Radiology, Eberhard-Karls-University Tuebingen, Germany, Tuebingen, Germany

Simultaneous multislice diffusion weighted imaging (SMS-DWI) is a promising technique to shorten scan time in MRI. Aim of our study was to compare the diagnostic performance of SMS-DWI to conventional DWI for multiparametric whole-body examinations of oncologic patients in PET/MRI. We performed an evaluation in three steps: First in a phantom study, second in a volunteer study and third in a patient study with 20 oncologic patients. We found that SMS-DWI led to a significant reduction of scan time and, although suffering from slightly impaired image quality, provided reliable ADC values and lesion conspicuity of PET positive lesions.

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