PMC4395987_01
(a and b) T2-weighted Brain MRI (coronal plane). T2 Coronal MRI thin-section 3D CISS images showing the right PICA crossing the cerebello-pontine cistern in close contact with the right VII and VIII nerves. The arrow indicates the PICA loop
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F1
Images showed the right posterior cerebellar artery crossing the cerebello-pontine cistern [arrow in Figure 1] in close contact with the right VII and VIII nerves [arrow in Figure 2], near the internal auditory canal.
(a-c) Axial MRI thin-section 3D CISS images: the right PICA makes a loop in the cerebello-pontine cistern.(d) Close contact of the PICA and VII nerve. The arrow indicates the close contact between the vessel and the VII-VIII nerve complex
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F2
Images showed the right posterior cerebellar artery crossing the cerebello-pontine cistern [arrow in Figure 1] in close contact with the right VII and VIII nerves [arrow in Figure 2], near the internal auditory canal.
Intraoperative views during microvascular decompression. We observed close contact between vascular structures and the facial nerve, which could explain the irritative symptoms presented by the patient. *VII-VIII nerve complex; arrow-head - loop of PICA; IX - glossopharyngeal nerve
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F3
In the cerebello-pontine angle, as shown in Figure 3, the loop [arrow-head in Figure 3] of the PICA was visualized, as well as the close contact between the vascular structure and the VII-VIII nerves complex [* in Figure 3].