MRCP2-3331

MRCP2-3331

A 26-year-old F1 driver presents with neck pain after a race. After three days, he complains of numbness on the left side of his face and right upper and lower limbs. During examination, it is found that he has lost pain and temperature sensation on the left side of his face and right upper and lower limbs. Additionally, his left pupil is smaller than the right and he has partial ptosis on the left. Eye movements are normal, and power, coordination, and reflexes are all normal. What is the preferred brain imaging method used to establish the primary diagnosis?