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| Diagnostic value of MR 3D-TOF FLASH and VIBE sequence in trigeminal neuralgia |
| Qinghai Red Cross Hospital, Xining 810000, China |
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Abstract Objective: To evaluate the clinical value of MR three-dimensional time of flight fast low angle shot sequence(3D-TOF FLASH) and volumetric interpolated breath-hold examination(VIBE) sequence in diagnosis of trigeminal neuralgia. Method: Forty-seven patients with trigeminal neuralgia underwent 3D-TOF FLASH and VIBE of large and small voxel mode respectively. The signal-to-noise ratio(SNR), carrier noise ratio(CNR) and the number of peripheral vessels of two scanning sequences were compared, the diagnostic values of two sequences were evaluated in trigeminal neuralgia. Results: The CNR and SNR values of trigeminal nerve of VIBE sequence were significantly higher than those of 3D-TOF FLASH sequence, the difference was statistically significant(P<0.05), and the number of peripheral vessels of the trigeminal nerve was significantly increased(P<0.05). Compared with the small voxel mode, the CNR, SNR values and the number of peripheral vessels of trigeminal nerve of the large voxel mode in two scanning sequences were increased(P<0.05). Conclusion: The application of 3D-TOF FLASH sequence of the large voxel mode in trigeminal nerve can quickly and accurately distinguish responsible arteries; and the application of VIBE sequence can display the trigeminal nerve in the cerebellopontine angle pool and peripheral vessels more precisely in magnetic resonance tomographic angiography(MRTA).
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Received: 08 April 2015
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