Abstract #3881

Can a sub 2-minute MRI exam compete with CT for imaging sinus anatomy?

Sarah Reeve^1,2, Mark Parker^2,3, James Rioux^1,2,4, Elena Adela Cora^4,5, Chris Bowen^1,2,4, Steven Beyea^1,2,4,6, and David Volders^4,5

¹Physics and Atmospheric Science, Dalhousie University, Halifax, NS, Canada, ²Biomedical Translational Imaging Centre, QEII Health Sciences Centre, Halifax, NS, Canada, ³Medicine, Dalhousie University, Halifax, NS, Canada, ⁴Diagnostic Radiology, Dalhousie University, Halifax, NS, Canada, ⁵Diagnostic Imaging, Nova Scotia Health, Halifax, NS, Canada, ⁶School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada

Synopsis

MRI of the paranasal sinuses with bSSFP sequences is not typically performed due to prohibitive exam times and the prevalence of artifacts caused by off-resonance effects. We have shown that bSSFP images acquired in under 2 minutes using high-performance gradients at low field resist banding artifacts and demonstrate SNR and resolution sufficient to delineate relevant structures. This is supported by high SNR values in tissues and fluid-filled spaces, and low SNR in the air-filled maxillary sinus. 2-minute scan times compete with CT for clinical work flow and demonstrate the potential of MRI for high throughput sinus pathology evaluation.

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