Head and Neck Imaging
Application of Magnetic Resonance Hydrography Technology in Optic Nerve Scanning*
Author：DONG Yu-ru, WANG Hong, Ma Yi,et al.
affiliation：Department of MRI, Armed Police General Hospital, Beijing 100039, China
PDFAbstract
Objective To explore the clinical value of magnetic resonance hydrography (MRH) technology in optic nerve scanning. Methods 35 patients performed orbit magnetic resonance imaging from June 2013 to May 2014 in our hospital were selected. All the patients were performed 2D and 3D same direction T2 weighted rapid spin echo sequences scanning. Results Compared with 2D-173-200 sequence and 2D-173-330 sequence, when performed with 3D-173 sequence, the value of SNR was significantly higher (t=4.5, P<0.001; t=7.2, P<0.001). When bandwidth was set as 330 or 200, the values of SNR in 2D-80, 2D-100 and 2D-173 sequences were significantly different (X2 =30.4, P<0.001; X2 =30.4, P<0.001). When field of view (FOV) was set as 173, the values of SNR in the bandwidths of 200 were significantly higher than that in 330. No statistical differences were found in SNR when FOV set as 80 and 100 (Z=-0.3, P=0.756; Z=-1.4, P=0.159). Conclusion MRH could make clear optic nerve image; the wider of FOV, the larger of pixels, and the higher quality of image; compared with 2D sequence, 3D sequence could have higher SNR value and higher quality of image.
【Keyword】Magnetic Resonance; Hydrography; Ooptic Nerve
【Chart number】R774
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2015.02.06
Chinese journal of CT and MRI
th13Volume， th 2 Issue
2015Year02Month
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