ADC	apparent diffusion coefficient
AICA	anterior inferior cerebellar artery
BA	basilar artery
DTI	diffusion tensor imaging
FA	fractional anisotropy
HFS	hemifacial spasm
MRI	magnetic resonance imaging
MVD	microvascular decompression
N.D.	no data
NMT	neuromyotonia
NVC	neurovascular compression
ONP	oculomotor nerve palsy
PCA	posterior cerebral artery
PICA	posterior inferior cerebellar artery
REZ	root entry/exit zone
SCA	superior cerebellar artery
VA	vertebral artery