3D-CT angiography with volume rendering technique in the intracerebral aneurysms

Many techniques of 3D reconstruction (MIP, SSD) permit a good evaluation of the circle of Willis in order to detect cerebral aneurysms. More recently, the advent in the clinical practice of a calculation algorithm (VRT) adapted to the workstations for images treatment seems to improve evaluation of the characteristics regarding these aneurysms.We report 4 cases with cerebral aneurysms studies with CT-angiography using the technique MIP and VRT.The VRT, using the totality of image informations, allows a better understanding than MIP about the intracranial cerebral aneurysms including their constitution and 3D localization.The VRT reconstruction permits to obtain quickly good quality and reproductive images, without relationship with threshold.