Philips Technologie GmbH, Forschungslaboratorien, Röntgenstrasse 24-26, D-22335 Hamburg, Germany.
Med Phys. 2009 Oct;36(10):4440-50. doi: 10.1118/1.3194802.
The evolution to ever wider detector arrays that are able to cover whole organs with a single circular gantry sweep has revitalized the research efforts toward finding improved axial scanning algorithms and protocols. The authors propose a computed tomography scan and reconstruction concept using two sources, a single detector and a two-pass cone-beam correction method, as an integral part of the reconstruction. Compared with standard circular acquisition and reconstruction methods, the new concept excels with improved coverage and very low cone-beam artifact level also for short scan acquisitions, which makes it especially attractive for cardiac applications.
不断发展的探测器阵列，能够在单个环形机架旋转时覆盖整个器官，这重新激发了研究人员的积极性，促使他们寻找改进的轴向扫描算法和协议。本文提出了一种计算机断层扫描和重建的概念，该概念使用两个源，一个单探测器和一个双通锥束校正方法，作为重建的一个组成部分。与标准的圆形采集和重建方法相比，该新概念在覆盖范围和极低的锥束伪影水平方面表现出色，即使在短时间的扫描采集时也是如此，这使其特别适用于心脏应用。
