But diagnosing a brain disorder without actually looking at the brain is analogous to treating a patient with a heart problem based on their physical symptoms, without even doing an ECG or a chest X-ray to look at the heart.
诊断一种脑部疾病 却不直接查看大脑 就像是治疗心脏病人 根据他们的身体症状， 而不做心电图或者胸部X-光片 来查看心脏。