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 1

Comparison of postoperative headache in 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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(b)
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