Automated algorithm for reconstruction of the complete spine from multistation 7T MR data

作者：Dzyubachyk Oleh^*; Lelieveldt Boudewijn P F; Blaas Jorik; Reijnierse Monique; Webb Andrew; van der Geest Rob J

来源：Magnetic Resonance in Medicine, 2013, 69(6): 1777-1786.

DOI：10.1002/mrm.24404

• 7T MRI
• whole-spine
• intensity inhomogeneity correction
• volume stitching

Recent technical developments in high-field MRI have enabled high-resolution imaging of the whole spine within clinically acceptable times. However, analysis of such data requires intensity inhomogeneity correction and volume stitching, both of which are typically performed manually. In this work, an automated method for reconstruction of the complete spine from multistation 7T MR data is presented. The method consists of a number of image processing steps, in particular intensity inhomogeneity correction and image registration for recovery of unknown interscan bed translations, which result in high-quality spine volume reconstructions. The registration performance of the developed algorithm was validated on 18 datasets acquired in two or three stations. In all the test cases, our algorithm was able to produce correct reconstruction of the spine volume. The resulting mean registration error (0.53 mm) is found to be lower than the pixel size, demonstrating robustness and accuracy of the proposed method. Magn Reson Med, 2013.

• 出版日期2013-6