Increased image quality and reduced radiation dose and contrast media volume: a holistic approach to intracranial CTA.

Aim: To investigate the dose-length product (DLP) during intracranial computed tomography angiography (CTA) using a patient-specific contrast formula.

Materials And Methods: Intracranial CTA was performed on 120 patients using 64-channel CT. Patients were subjected in equal numbers to one of two acquisitions/contrast medium protocols.