Development and evaluated for intracranial aneurysm imaging reconstruction algorithms by 320 Slice Dynamic Volume CT

320 Slice Dynamic Volume CT provides intracranial aneurysm patients with 4D digital subtraction angiography (DSA) imaging and the Key technology of which are the wide detection platform and ConeXact Cone-beam reconstruction algorithm. In this thesis, some familiar cone-beam scan reconstruction algorithms are analyzed and compared, especially those algorithms currently developed such as Feldkamp-type, Grangeant, Katsevich and ConeXact cone-beam reconstruction algorithm. In clinical applications, thirty-four aneurysm patients have through the dynamic volume scan with wide detection platform by TOSHIBA 320 Slice CT and obtained fine single-pass imaging results all of which had no phase artifacts. The quality of scanning images were evaluated and compared with computed tomography angiography (CTA) and convention cerebral vascular DSA angiography. Comparative analysis shows that the 320 slice CT has great advantages in dynamic volume function imaging compared to CTA and it is of a great value to screen out patients with susceptible intracranial aneurysm from the following re-examination after the surgery for the patients with aneurysm.