This study will be carried out prospectively on patients who applied to the cardiovascular surgery polyclinic and the carotid-vertebral artery doppler ultrasound due to the vascular problem. All patients will fill "Balance Disorder Scan Survey" and "Vertigo-Dizziness Imbalance Questionnaire-SS". Patients who score 1 and more are directed to the ear nose throat polyclinic and detailed differential diagnosis. Those who score 0 will be in control group.

Right and left carotid artery flow velocities, intima-media thicknesses (IMT), presence of plaque, vertebral artery flow velocities, and vertebral artery resistance indexes (RI) will be recorded in all patients. Risk factor analysis, Vertigo Symptom Scale (VSS) and Dizziness Handicap Inventory (DHI-S) questionnaires will be applied to the patients in the ENT outpatient clinic. The differential diagnosis of vertigo will be made by performing detailed balance examinations and advanced balance tests.

Inclusion Criteria:

• All patients who have a vascular problem and doppler USG.

Exclusion Criteria:

Patients with impaired cooperation, history of malignancy, presence of central nervous system pathology, presence of neurological disease affecting balance in the history, patients whose use of glasses may cause problems (epilepsy, vision loss, etc.) were excluded from the study.

This study will be conducted prospectively on patients who apply to the Cardiovascular Surgery outpatient clinic and undergo Carotid-vertebral artery Doppler ultrasound due to vascular problems.