Abstract #0209

A prospective patient study using pseudocontinuous Arterial Spin Labeling to detect pulmonary embolism: preliminary results of an ongoing study

Ferdinand Seith¹, Cecilia Zhang¹, Manuel Kolb¹, Brigitte Gückel¹, Rolf Pohmann², Petros Martirosian³, and Ahmed E. Othman^1,4

¹Diagnostic and Interventional Radiology, University Hospital of Tübingen, Tübingen, Germany, ²High-Field MR Center, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, ³Section on Experimental Radiology, University Hospital of Tübingen, Tübingen, Germany, ⁴Neuroradiology, University Hospital of Mainz, Mainz, Germany

Synopsis

We present preliminary results of a prospective study of 96 patients examined with pCASL-MRI of the lung with suspected pulmonary embolism. pCASL-MRI of the lung was acquired in a 1.5T scanner by labeling the pulmonary trunk during systole. Coronal, sagittal and axial images were acquired using a fast bSSFP sequence. Additionally, a mulit-slice coronal bSSFP imaging the whole lung was performed. Two blinded readers evaluated MR-images to detect pulmonary embolism and noted the diagnostic confidence (5=very good). Compared to CT, sensitivity and specificity were 0.971 and 0.951. The median diagnostic confidence was 5 in both readers (kappa 0.739).

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