Multi-beam X-ray source breast tomosynthesis reconstruction with different algorithms.
Multi-beam X-ray source breast tomosynthesis reconstruction with different algorithms.
复制标题
具有不同算法的多光束X射线源乳房乳房乳房合成重建。
DOI：
10.1117/12.844295
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Chen Y
中科院分区：
文献类型：
--
作者：
Zhou W;Qian X;Lu J;Zhou O;Chen Y
数字乳腺断层合成技术是一种通过有限角度投影图像提供物体三维重建体积来提高乳腺癌早期发现的新技术。本文研究了一种新型的多束x射线源乳腺断层合成系统对标准活检训练乳房假体的图像重建。基于碳纳米管技术的x射线管沿平行成像几何排列以减少运动模糊。研究了反投影（BP）、滤波反投影（FBP）、矩阵反演断层合成（MITS）、最大似然期望最大化（MLEM）和同步代数重建技术（SART）等5种具有代表性的重建算法，评价了断层合成系统的图像重建效果。研究了嵌套在幻体内的肿块和微钙化团块的重建图像。所评估的多束x线乳腺断层合成系统能够生成乳腺幻影的三维信息，并清晰识别肿块和钙化区域。后续的研究将进一步完善成像参数的测量和重建。
Digital breast tomosynthesis is a new technique to improve the early detection of breast cancer by providing three-dimensional reconstruction volume of the object with limited-angle projection images. This paper investigated the image reconstruction with a standard biopsy training breast phantom using a novel multi-beam X-ray sources breast tomosynthesis system. Carbon nanotube technology based X-ray tubes were lined up along a parallel-imaging geometry to decrease the motion blur. Five representative reconstruction algorithms, including back projection (BP), filtered back projection (FBP), matrix inversion tomosynthesis (MITS), maximum likelihood expectation maximization (MLEM) and simultaneous algebraic reconstruction technique (SART), were investigated to evaluate the image reconstruction of the tomosynthesis system. Reconstructed images of the masses and micro-calcification clusters embedded in the phantom were studied. The evaluated multi-beam X-ray breast tomosynthesis system is able to generate three-dimensional information of the breast phantom with clearly-identified regions of the masses and calcifications. Future study will be done soon to further improve the imaging parameters' measurement and reconstruction.