Fig. 4
From: Diffusion tensor imaging in trigeminal neuralgia: beyond the normal morphology
A 39-year-old female patient presented with left TN for 4 months duration. Clinical assessment showed a pain score of 3. A Axial T2 WI showing normal appearing trigeminal nerves with a small vascular loop crossing the REZ of the left trigeminal nerve (arrow). B Axial colour-coded map showing normal colour intensity of both trigeminal nerves. C Axial FA map showing reduced FA value of the left trigeminal nerve (0.35) compared to the contralateral normal side (0.48) D 3D fibre tractography of both trigeminal nerves showing normal and comparable 3D tractography appearance of both nerves