IEEE Trans Image Process. 2011 Apr;20(4):1173-6. doi: 10.1109/TIP.2010.2076819. Epub 2010 Sep 20.
We clarify that the derivative-free fan-beam reconstruction formula [IEEE Trans. Image Process. 2, 543-547, 1993] only allows exact reconstruction of an object for a circular trajectory or at the origin of the coordinate system for a radially symmetric noncircular trajectory.
我们澄清，无导数扇束重建公式[IEEE Trans. Image Process. 2, 543-547, 1993]仅允许在圆形轨迹或径向对称非圆形轨迹的坐标系原点处对物体进行精确重建。
