The diagnostic angiography was performed by radial approach.

The diagnostic angiography was performed by femoral approach.

In transradial access, no preprocedural upper extremity collateral blood supply testing was completed. When the radial access is unsuccessful, it is shifted to ulnar or femoral access. All right arms were secured in the fully supine position to allow access to both radial and ulnar arteries. At the conclusion of radial access procedures, a TR band was applied to close the access. Neurological exams as well as radial artery pulse and pulse oximeter of the right first finger were assessed during and on discharge by trained recovery nurses. Femoral access was performed in a standard manner. After the access (femoral or radial), a cerebral angiogram was performed in a standard manner using appropriate catheters (vertebral, bern, Simmons 2 or 3) according to the access. For the radial access, the patient was slightly sedated.

Incidence of sucess of performing the programmed cerebral angiogram through the randomised access without for crossover.

Incidence of puncture success to insert a sheat in the access point

the duration (minutes) between the insertion of sheath and removal of sheath. fluoroscopy time, the need for performing 3D angiography, dose area product (DAP), total radiation dose, successful puncture (successful insertion of radial artery sheath and femoral artery sheath). Procedures that yielded angiograms with acceptable quality through the subclavian artery injection (with an inflated blood pressure cuff on the arm), in cases of failed vertebral artery cannulation, were also considered successful.

The pain evaluation by the Visual analog score (VAS) by trained nurses and recorded as the scoring system (No pain: 0; Mild:1-3; Moderate:4-7; Severe:8-10).