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Abstract #1055

High Resolution Vocal Cord Imaging - Comparison Between 3T & 7T.

Johanna J. Bluemink1, Wouter Koning2, Dennis W. Klomp2, Peter R. Luijten2, Frank A. Pameijer2, Marielle Philippens1, Jan J.W. Lagendijk1, Cornelis A.T. van den Berg1

1Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands; 2Radiology, University Medical Center Utrecht, Utrecht, Netherlands

In this work we explore the possibilities of 7T MR imaging of the larynx for diagnosis of the extension of laryngeal tumors. Comparison with 3T imaging indicates that anatomical details such as the epithelial layer of the vocal cords can be imaged with high resolution (0.50.51mm3) at 7T, whereas at 3T the SNR is insufficient, resulting in noisy images. Therefore, at 3T thicker slices are needed leading to partial volume effects. As a result 7T imaging may provide useful additional information about tumor extent.