Weiwen Wu,Yanbo Zhang,Qian Wang et al.
Weiwen Wu et al.
Spectral computed tomography (CT) reconstructs the same scanned object from projections of multiple narrow energy windows, and it can be used for material identification and decomposition. However, the multi-energy projection dataset has a ...
Sunli Tang,Carlos Fernandez-Granda,Sylvain Lannuzel et al.
Sunli Tang et al.
Magnetic resonance fingerprinting (MRF) is a technique for quantitative estimation of spin- relaxation parameters from magnetic-resonance data. Most current MRF approaches assume that only one tissue is present in each voxel, which neglects...
Nonreciprocal broken ray transforms with applications to fluorescence imaging [0.03%]
非互易的断裂射线变换及其在荧光成像中的应用
Lucia Florescu,Vadim A Markel,John C Schotland
Lucia Florescu
Broken ray transforms (BRTs) are typically considered to be reciprocal, meaning that the transform is independent of the direction in which a photon travels along a given broken ray. However, if the photon can change its energy (or be absor...
Martin Holler,Richard Huber,Florian Knoll
Martin Holler
We consider a class of regularization methods for inverse problems where a coupled regularization is employed for the simultaneous reconstruction of data from multiple sources. Applications for such a setting can be found in multi-spectral ...
Nonlocal low-rank and sparse matrix decomposition for spectral CT reconstruction [0.03%]
用于光谱CT重建的非局部低秩稀疏矩阵分解方法
Shanzhou Niu,Gaohang Yu,Jianhua Ma et al.
Shanzhou Niu et al.
Spectral computed tomography (CT) has been a promising technique in research and clinic because of its ability to produce improved energy resolution images with narrow energy bins. However, the narrow energy bin image is often affected by s...
Nonsmooth Convex Optimization for Structured Illumination Microscopy Image Reconstruction [0.03%]
结构照明显微镜图像重建的非光滑凸优化方法
Jérôme Boulanger,Nelly Pustelnik,Laurent Condat et al.
Jérôme Boulanger et al.
In this paper, we propose a new approach for structured illumination microscopy image reconstruction. We first introduce the principles of this imaging modality and describe the forward model. We then propose the minimization of nonsmooth c...
Joint reconstruction of the initial pressure and speed of sound distributions from combined photoacoustic and ultrasound tomography measurements [0.03%]
基于光声和超声断层扫描联合成像的初始压强与声速分布的共同反演方法研究
Thomas P Matthews,Mark A Anastasio
Thomas P Matthews
The initial pressure and speed of sound (SOS) distributions cannot both be stably recovered from photoacoustic computed tomography (PACT) measurements alone. Adjunct ultrasound computed tomography (USCT) measurements can be employed to esti...
Yair Censor
Yair Censor
Linear superiorization considers linear programming problems but instead of attempting to solve them with linear optimization methods it employs perturbation resilient feasibility-seeking algorithms and steers them toward reduced (not neces...
A framelet-based iterative maximum-likelihood reconstruction algorithm for spectral CT [0.03%]
基于框架迭代最大似然的光谱CT重建算法研究
Yingmei Wang,Ge Wang,Shuwei Mao et al.
Yingmei Wang et al.
Standard computed tomography (CT) cannot reproduce spectral information of an object. Hardware solutions include dual-energy CT which scans the object twice in different x-ray energy levels, and energy-discriminative detectors which can sep...
Q Yang,W Cong,G Wang
Q Yang
The recently-developed superiorization approach is efficient and robust for solving various constrained optimization problems. This methodology can be applied to multi-energy CT image reconstruction with the regularization in terms of the p...