The rotate-plus-shift C-arm trajectory: complete CT data with limited angular rotation
The rotate-plus-shift C-arm trajectory: complete CT data with limited angular rotation
复制标题
旋转加移位 C 形臂轨迹:具有有限角度旋转的完整 CT 数据
DOI:
10.1117/12.2081925
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
M. Kachelrieß
中科院分区:
文献类型:
--
作者:
L. Ritschl;J. Kuntz;M. Kachelrieß
In the last decade C–arm–based cone–beam CT became a widely used modality for intraoperative imaging. Typically a C–arm scan is performed using a circle–like trajectory around a region of interest. Therefor an angular range of at least 180° plus fan–angle must be covered to ensure a completely sampled data set. This fact defines some constraints on the geometry and technical specifications of a C–arm system, for example a larger C radius or a smaller C opening respectively. These technical modifications are usually not beneficial in terms of handling and usability of the C–arm during classical 2D applications like fluoroscopy. The method proposed in this paper relaxes the constraint of 180◦ plus fan–angle rotation to acquire a complete data set. The proposed C–arm trajectory requires a motorization of the orbital axis of the C and of ideally two orthogonal axis in the C plane. The trajectory consists of three parts: A rotation of the C around a defined iso–center and two translational movements parallel to the detector plane at the begin and at the end of the rotation. Combining these three parts to one trajectory enables for the acquisition of a completely sampled dataset using only 180° minus fan–angle of rotation. To evaluate the method we show animal and cadaver scans acquired with a mobile C-arm prototype. We expect that the transition of this method into clinical routine will lead to a much broader use of intraoperative 3D imaging in a wide field of clinical applications.
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
N. Strobel;O. Meissner;J. Boese;T. Brunner;B. Heigl;M. Hoheisel;G. Lauritsch;M. Nagel;M. Pfister;Ernst;B. Scholz;B. Schreiber;M. Spahn;M. Zellerhoff;K. Klingenbeck
通讯作者:
K. Klingenbeck
DOI:
10.1109/iembs.2007.4353318
发表时间:
2007
期刊:
2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
影响因子:
--
作者:
R. Tita;T. Lueth
通讯作者:
T. Lueth