Carotid stenting is now one of the effective methods for treating carotid stenosis, with some advantages of less trauma and fewer complications than the previous carotid endarterectomy. This treatment is now included in the US guidelines for ischemic stroke prevention and treatment, and this minimally invasive procedure has an important role in stroke prevention. In this article, we describe the treatment procedure in detail in a patient we treated yesterday. The patient, a female, was 79 years old. She was admitted to the hospital for 10 days due to increased weakness of the right limb. She had a stroke attack three years ago, which improved after treatment, but she continued to have dizziness. She was able to take care of herself, but had another stroke 10 days ago and her right limb weakness worsened. MRI of the head showed cerebral infarction in the left basal ganglia region, and ultrasound of the neck showed 90% stenosis of the left internal carotid artery.