Haaker P, Klotz E, Koppe R, Linde R, Möller H
Med Phys. 1985 Jul-Aug;12(4):431-6. doi: 10.1118/1.595705.
A new nonlinear reconstruction method for tomosynthesis is described. This method is suited for "dilute" objects, i.e., objects in which most of the voxels have negligibly small absorption. Images of blood vessels filled with contrast material approximate this condition if the background is subtracted. The technique has been tested experimentally using a wire phantom and a prepared human heart. The results show significantly less artifacts than the well-known back projection. It is possible to get diagnostic image quality with a few projections. The reconstruction algorithm can be realized with dedicated real-time hardware.
本文描述了一种用于断层合成的新型非线性重建方法。该方法适用于“稀疏”物体，即大多数体素吸收可忽略不计的物体。如果减去背景，充满造影剂的血管图像近似这种情况。该技术已使用线模体和制备好的人体心脏进行了实验测试。结果表明，与著名的反投影相比，伪影明显减少。只需少量投影就有可能获得诊断图像质量。重建算法可以用专用实时硬件实现。
