PURPOSE To evaluate the diagnostic performance of flow-sensitive dephasing (FSD)-prepared steady-state free precession (SSFP) magnetic resonance angiography (MRA) at 3 T for imaging infragenual arteries relative to contrast-enhanced MRA (CE-MRA) and digital subtraction angiography (DSA). MATERIALS AND METHODS A series of 16 consecutive patients with peripheral arterial disease (PAD) underwent...

We present a novel Multi-Regime Analysis (MRA) routine for interpreting force indentation measurements of soft materials using atomic force microscopy. The MRA approach combines both well established and semi-empirical theories of contact mechanics within a single framework to deconvolute highly complex and non-linear force-indentation curves. The fundamental assumption in the present form of t...

PURPOSE To present a new 4D method that is designed to provide high spatial resolution MR angiograms at subsecond temporal resolution by combining different techniques of view sharing with parallel imaging at 3.0T. MATERIALS AND METHODS In the keyhole-based method, a central elliptical cylinder in k-space is repeated n times (keyhole) with a random acquisition (CENTRA), and followed by the re...

The aim of this study was to compare diagnostic value of high spatial resolution time-resolved magnetic resonance angiography with interleaved stochastic trajectory (TWIST) using Gadobutrol to Computed tomography angiography (CTA) for preoperative evaluation of lower extremity tumors.This prospective study was approved by the institutional review board. Fifty consecutive patients (31 men, 19 wo...

INTRODUCTION For MR applications such as contrast-enhanced MR angiography (CE-MRA), it is desirable to simultaneously achieve high spatial and temporal resolutions; however fully-sampled Cartesian acquisition of large matrices is time consuming. View sharing combined with parallel imaging (PI) improves temporal resolution [1], as does incoherent under-sampling with compressed sensing (CS) [2] o...

© 2014 Yonghoon Choi 953 http://dx.doi.org/10.4218/etrij.14.0113.0843 This paper studies the uplink resource allocation for multiple radio access (MRA) in reconfigurable radio systems, where multiple-input and multiple-output (MIMO) multicarrier-code division multiple access (MCCDMA) and MIMO orthogonal frequency-division multiple access (OFDMA) networks coexist. By assuming multi-radio user eq...

Introduction: Endovascular treatment of descending thoracic and abdominal aortic dissection has emerged as an alternative to open surgery. In terms of endovascular aortic stent-graft placement planning, MRI appears to be particularly useful as it can provide a comprehensive preinterventional diagnostic evaluation of the vascular aortic morphology. However, standard MRA techniques provided no in...

In this paper we address the problem of reconstructing a high resolution volumic image from several low resolution data sets. A solution to this problem is proposed in the particular framework of magnetic resonance angiography (MRA), where the resolution is limited by a trade-o5 between the spatial resolution and the acquisition time, both being proportional to the number of samples acquired in...