Inclusion Criteria:  Age between 20 and 65 years old hemiplegia or hemiparesis has a history of hypertension a victim of first episode of hypertensive intracerebral hemorrhage at basal ganglion 3 to 12 months after the episode of hypertensive intracerebral hemorrhage medically stable the blood flow of middle cerebral artery (M1) could be detected by transcranial doppler  Exclusion Criteria:  severe heart failure (New York Heart Association class 4) severe angina pectoris (canadian cardiovascular society class 4) chronic kidney disease stage 5 hepatic encephalopathy stage 2 or more advanced uncontrolled diabetes mellitus in recent 6 months (HbA1c > 8.5) combined with intraventricular hemorrhage causing hydrocephalus and underwent ventriculoperitoneal shunt placement surgery high-dose radiation exposure in recent 1 year blood flow of middle cerebral artery (M1) could be not be detected by transcranial doppler at either side major psychological disease in recent 6 months (for example, uncontrolled depression, schizophrenia, and bipolar disease) has evidence of any autoimmune disease, neurodegenerative disease (such as parkinsonism, Alzheimer's disease), or epilepsy has clinically significant systemic disease or severe infection (pneumonia, sepsis) pregnant or lactating women allergy to MRI contrast uncontrolled hypertension (systolic blood pressure higher than 160 mmHg or diastolic blood pressure higher than 100 mmHg) transcranial doppler aneurysm, brain tumor, or arteriovenous malformation identified by MRA has coagulation disorders or other coagulation problems identified by blood test (abnormal complete blood count, prothrombin time, or partial thromboplastin time)