Experimental demonstration of an analytic method for image reconstruction in optical tomography with large data sets

软组织缪子散射层析成像的实验验证

Experimental Demonstration of Soft-Tissue Muon Scattering Tomography

该研究首次实验验证缪子散射层析成像可应用于生物软组织，利用CERN质子同步加速器的2 GeV/c缪子束对拟人化胸部体模成像，重建的散射密度与模拟结果偏差达百分位水平，为医学成像提供了新的互补探针。

Deep Learning in Photoacoustic Tomography: Current approaches and future directions

Biomedical photoacoustic tomography, which can provide high resolution 3D soft tissue images based on the optical absorption, has advanced to the stage at which translation from the laboratory to clinical settings is becoming possible. The need for rapid image formation and the practical restrictions on data acquisition that arise from the constraints of a clinical workflow are presenting new image reconstruction challenges. There are many classical approaches to image reconstruction, but ameliorating the effects of incomplete or imperfect data through the incorporation of accurate priors is c…

AIR: fused Analytical and Iterative Reconstruction method for computed tomography

Purpose: CT image reconstruction techniques have two major categories: analytical reconstruction (AR) method and iterative reconstruction (IR) method. AR reconstructs images through analytical formulas, such as filtered backprojection (FBP) in 2D and Feldkamp-Davis-Kress (FDK) method in 3D, which can be either mathematically exact or approximate. On the other hand, IR is often based on the discrete forward model of X-ray transform and formulated as a minimization problem with some appropriate image regularization method, so that the reconstructed image corresponds to the minimizer of the optim…

正电子发射断层扫描和单光子发射计算机断层扫描的重建算法及其数值实现

Reconstruction Algorithms for Positron Emission Tomography and Single Photon Emission Computed Tomography and their Numerical Implementation

本文利用非线性可积方程理论中的数学技术，推导了Radon变换和衰减Radon变换的解析逆变换公式，并基于三次样条近似提出了数值实现算法，通过Shepp-Logan体模测试验证了算法的准确性。

通过成人颅骨实现经颅光声计算机断层扫描的去像差

De-aberration for transcranial photoacoustic computed tomography through an adult human skull

本文首次实验证明利用均匀弹性颅骨模型可对经离体成人颅骨的PACT图像进行去像差，仅需颅骨几何与位置信息，解决了困扰经颅光声成像二十年的颅骨声学畸变难题。

Extraction-based Deep Learning Reconstruction of Interior Tomography

Interior tomography is a typical strategy for radiation dose reduction in computed tomography, where only a certain region-of-interest (ROI) is scanned. However, given the truncated projection data, ROI reconstruction by conventional analytical algorithms may suffer from severe cupping artifacts. In this paper, we proposed a new extraction-based deep learning method for the reconstruction of interior tomography. Our approach works in dual domains where a sinogram-domain network (SDNet) estimates the contribution of the exterior region to the truncated projection and an image-domain network (ID…