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Abstract #0296

Free lunch may not exist, but free contrast does: Calculation of Susceptibility weighted Images from data acquired for Phase Contrast Angiography

Yogesh kannan Mariappan1, Jaladhar Neelavalli1, Nehul Makani1,2, Narayana Krishna Rolla1, Karthik Gopalakrishnan1, Nalini Pagadala1,2, and Jitendar Saini3
1Philips Healthcare, Bengaluru, India, 2Indian Institute of Technology, Madras, Chennai, India, 3National Institute for Mental Health and Neuroscience, Bengaluru, India

In Phase contrast Angiography (PCA), the flow is encoded as additional phase onto the background phase typically using a Fast field echo (FFE) based pulse sequence. This flow dependent phase is then extracted and is used in further downstream processing. The background phase is typically discarded. In this work, this background phase is processed to obtain Susceptibility weighted Imaging (SWI) contrast. Our preliminary results indicate that the additional SWI contrast (PCA-SWI) images can potentially provide clinically significant information like hemorrhage, calcification and thrombus etc. and are similar to the results obtained from conventional SWI images.

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