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Fig. 1 | BMC Neurology

Fig. 1

From: Cervical myelopathy due to neurovascular compression syndrome caused by persistent first intersegmental artery: a case report

Fig. 1

Preoperative radiological findings. Magnetic resonance image showing compression of the spinal cord caused by bilateral persistent first intersegmental artery (PFIA); the spinal cord was compressed strongly by the left PFIA (a, b). Both vertebral arteries pass through the foramen transversarium up to the C2 level and then branch as PFIAs on each side. Both PFIAs enter the spinal canal at the C1/C2 level and merge with each other at the distal side of the basilar artery (c, d). a: T2-weighted magnetic resonance image (coronal). b: T2-weighted magnetic resonance image (sagittal). c: Computed tomography angiography image. d: Magnetic resonance angiography image

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