Discrete Estimation of Data Completeness for 3D Scan Trajectories with Detector Offset
Discrete Estimation of Data Completeness for 3D Scan Trajectories with Detector Offset
复制标题
具有探测器偏移的 3D 扫描轨迹数据完整性的离散估计
DOI:
10.1007/978-3-662-46224-9_10
复制
发表时间:
2015
影响因子:
3
通讯作者:
J. Hornegger
中科院分区:
文献类型:
--
作者:
A. Maier;P. Kugler;G. Lauritsch;J. Hornegger
The sequence of source and detector positions in a CT scan determines reconstructable volume and data completeness. Commonly this is regarded already in the design phase of a scanner. Modern flatpanel scanners, however, allow to acquire a broad range of positions. This enables many possibilities for different scan paths. However, every new path or trajectory implies different data completeness. Analytic solutions are either designed for special trajectories like the Tam-window for helical CT scans or do not incorporate the actual detector size such as Tuy’s condition. In this paper, we describe a method to determine the voxel-wise data completeness in percent for discretely sampled trajectories. Doing so, we are able to model any sequence of source and detector positions. Using this method, we are able to confirm known theory such as Tuy’s condition and data completeness of trajectories using detector offset to increase the field-of-view. As we do not require an analytic formulation of the trajectory, the algorithm will also be applicable to any other sourcedetector-path or set of source-detector-path segments.
DOI:
10.1007/978-3-642-54111-7_14
发表时间:
2014
期刊:
影响因子:
--
作者:
Y. Xia;A. Maier;M. Berger;J. Hornegger
通讯作者:
J. Hornegger
影响因子:
3.8
作者:
Liu, Baodong;Bennett, James;Yu, Hengyong
通讯作者:
Yu, Hengyong
影响因子:
3.8
作者:
Maier, Andreas;Hofmann, Hannes G.;Fahrig, Rebecca
通讯作者:
Fahrig, Rebecca