Regularization in parallel MR image reconstruction

Parallel MRI has brought forward new applications by reducing the scan time in MR image acquisition. The acceleration is achieved by reducing the number of phase encode steps acquired during the image acquisition thus giving aliased images.

Accelerated cardiac perfusion imaging using k-t SENSE with SENSE training

In k-t sensitivity encoding (SENSE), MR data acquisition performed in parallel by multiple coils is accelerated by sparsely sampling the k-space over time. The resulting aliasing is resolved by exploiting spatiotemporal correlations inherent in dynamic images of natural objects.

Robust Solvers for Inverse Imaging Problems Using Dense Single-Precision Hardware

We present an iterative framework for robustly solving large inverse problems arising in imaging using only single-precision (or other reduced-precision) arithmetic, which allows the use of high-density processors (e.g. Cell BE and Graphics Processing Units).

出版机构：Springer US

刊物名称：Journal of Mathematical Imaging and Vision

出版时间：2009

ISSN：0924-9907

数据源：报刊文摘

Virtual coil concept for improved parallel MRI employing conjugate symmetric signals

In addition, the influence of phase variations originating from the complex receiver coils as well as from the background is investigated. It is shown that there exist background phase distributions yielding an optimized pMRI reconstruction. Magn Reson Med 61:93-102, 2009. ? 2008 Wiley-Liss, Inc.

Automatic correction of echo-planar imaging (EPI) ghosting artifacts in real-time interactive cardiac MRI using sensitivity encoding

Purpose

To develop a method that automatically corrects ghosting artifacts due to echo-misalignment in interleaved gradient-echo echo-planar imaging (EPI) in arbitrary oblique or double-oblique scan planes.

Automatic correction of echo-planar imaging (EPI) ghosting artifacts in real-time interactive cardiac MRI using sensitivity encoding

Purpose

To develop a method that automatically corrects ghosting artifacts due to echo-misalignment in interleaved gradient-echo echo-planar imaging (EPI) in arbitrary oblique or double-oblique scan planes.

Fully automatic, retrospective enhancement of real-time acquired cardiac cine MR images using image-based navigators and respiratory motion-corrected averaging

Real-time imaging may be clinically important in patients with congestive heart failure, arrhythmias, or in pediatric cases. However, real-time imaging typically has compromised spatial and temporal resolution compared with gated, segmented studies.

High temporal resolution functional MRI using parallel echo volumar imaging

Purpose

To combine parallel imaging with 3D single-shot acquisition (echo volumar imaging, EVI) in order to acquire high temporal resolution volumar functional MRI (fMRI) data.

Parallel MRI at microtesla fields

Parallel imaging techniques have been widely used in high-field magnetic resonance imaging (MRI). Multiple receiver coils have been shown to improve image quality and allow accelerated image acquisition.

SENSE imaging with a quadrature half-volume transverse electromagnetic (TEM) coil at 4T

Purpose

To demonstrate the feasibility of high-field SENSE imaging of large objects, such as the human head, using a semicircular (half-volume) coil for both transmission and multi-channel reception.