Volume 29, Issue 2

For imaging problems in which numerical solutions need to be computed for both the inverse and the underlying forward problems, discretization can be a major factor that determines the accuracy of imaging. In this work, we analyze the effect of discretization on the accuracy of fluorescence diffuse optical tomography. We model the forward problem by a pair of diffusion equations at the excitation ...

对于需要在反问题和底层正问题中计算数值解的成像问题，离散化可能是决定成像精度的主要因素。在本工作中，我们分析了离散化对荧光扩散光学层析成像精度的影响。我们通过一对激发扩散方程来建模正问题...

It is a well-known property in Fourier transform magnetic resonance imaging (MRI) that rigid body translational motion in image space results in linear phase accumulation in k -space. This work describes Multiple Overlapping k-space Junctions for Investigating Translating Objects (MOJITO), a correction scheme based on phase differences at trajectory intersections caused by 2-D alterations in the p...

在傅里叶变换磁共振成像（MRI）中，一个众所周知的特性是图像空间中的刚体平移运动会导致k空间中的线性相位积累。本文描述了一种用于研究平移物体的多重重叠k空间连接（MOJITO），这是一种基于轨迹交点处相位差的校正方案，该相位差由相位编码方向的二维变化引起。

Classifier design for a given classification task needs to take into consideration both the complexity of the classifier and the size of the dataset that is available for training the classifier. With limited training data, as often is the situation in computer-aided diagnosis of medical images, a classifier with simple structure (e.g., a linear classifier) is more robust and therefore preferred. ...

给定分类任务的分类器设计需要考虑分类器的复杂性和可用于训练分类器的数据集的大小。在训练数据有限的情况下，如医学图像计算机辅助诊断中常见的情况，具有简单结构（例如线性分类器）的分类器更鲁棒，因此更受青睐。...

In the first part of this work, we analyze the effect of discretization on the accuracy of fluorescence diffuse optical tomography (FDOT). Our error analysis provides two new error estimates which present a direct relationship between the error in the reconstructed fluorophore concentration and the discretization of the forward and inverse problems. In this paper, based on these error estimates, w...

在这项工作的第一部分，我们分析了离散化对荧光漫射光学断层成像（FDOT）精度的影响。我们的误差分析提供了两个新的误差估计，它们直接描述了重建荧光团浓度误差与正问题和逆问题离散化之间的关系。在本文中，基于这些误差估计，我们...

The use of multiple independent simultaneous radio-frequency (RF) transmitters and coils, known as parallel transmission, has the potential to make multidimensional excitation applicable to a wide range of magnetic resonance imaging applications. The sensitivity profile of the RF coils in a parallel transmission system determines the performance of the system. We present a theoretical framework, a...

使用多个独立的同时射频（RF）发射器和线圈（称为并行传输）有可能使多维激发适用于广泛的磁共振成像应用。并行传输系统中RF线圈的灵敏度分布决定了系统的性能。我们提出了一个理论框架，该框架...

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