Research Article

[Retracted] Effects of Continuous Infusion of Lidocaine under Ultrasound-Guided Cervical Sympathetic Ganglion Catheterization on Cerebral Hemodynamics and Thermal Imaging Characteristics of Head and Neck in Patients with Angioneurotic Headache

Figure 2

Comparison of postoperative cerebral hemodynamics and thermal imaging changes of head and neck between two groups of patients. (a) The number of headaches. (b) NRS score. (c) The duration of each headache. Compared with the control group, ; compared with preoperative, ; compared with T1, ; compared with T3, .
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