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Oblique coronal view MIP (a) and VR (b) TOF MR angiography images show absence of the left PICA, and well-developed left AICA and right PICA in a 12-year-old girl. Thick long arrow = right PICA, thin long arrows = right and left AICAs, thick short arrows = right and left SCAs, thin short arrows = right and left PCAs, and R = right.
