𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Elliptical field-of-view PROPELLER imaging

✍ Scribed by Ajit Devaraj; James G. Pipe

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
816 KB
Volume
62
Category
Article
ISSN
0740-3194

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Traditionally two‐dimensional scans are designed to support an isotropic field‐of‐view (iFOV). When imaging elongated objects, significant savings in scan time can potentially be achieved by supporting an elliptical field‐of‐view (eFOV). This work presents an empirical closed‐form solution to adapt the PROPELLER trajectory for an eFOV. The proposed solution is built on the geometry of the PROPELLER trajectory permitting the scan prescription and data reconstruction to remain largely similar to standard PROPELLER. The achieved FOV is experimentally validated by the point spread function (PSF) of a phantom scan. The details of potential savings in scan time and the signal‐to‐noise ratio (SNR) performance in comparison to iFOV scans for both phantom and in‐vivo images are also described. Magn Reson Med, 2009. © 2009 Wiley‐Liss, Inc.

📜 SIMILAR VOLUMES

Reduced circular field-of-view imaging
Reduced circular field-of-view imaging
✍ Klaus Scheffler; Jürgen Hennig 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 830 KB

A rapid dynamic imaging technique based on polar k-space sampling is presented. A gain in temporal resolution is achieved by angular undersampling. A detailed analysis of the point spread function of angular undersampled polar imaging reveals a reduced diameter of the corresponding circular field of

Reduction of field of view for dynamic i
Reduction of field of view for dynamic imaging
✍ Xiaoping Hu; Todd Parrish 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 431 KB

## Abstract This paper describes a simple technique that improves the temporal resolution for certain dynamic imaging applications. The technique is based on the assumption that the image to image intensity changes sought in dynamic imaging studies ire sometimes localized, and a smaller field of vi

Reduction of artifacts in T2-weighted PR
Reduction of artifacts in T2-weighted PROPELLER in high-field preclinical imaging
✍ Prachi Pandit; Yi Qi; Kevin F. King; G. Allan Johnson 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 542 KB

## Abstract A simple technique is implemented for correction of artifacts arising from nonuniform __T__~2~‐weighting of __k__‐space data in fast spin echo–based PROPELLER (periodically rotated overlapping parallel lines with enhanced reconstruction). An additional blade with no phase‐encoding gradi

Reduced field of view and undersampled P
Reduced field of view and undersampled PR combined for interventional imaging of a fully dynamic field of view
✍ Dana C. Peters; Michael A. Guttman; Alexander J. Dick; Venkatesh K. Raman; Rober 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 931 KB

## Abstract Active catheter imaging was investigated using real‐time undersampled projection reconstruction (PR) combined with the temporal filtering technique of reduced field of view (rFOV). Real‐time rFOV processing was interactively enabled during highly undersampled catheter imaging, resulting

Noquist: Reduced field-of-view imaging b
Noquist: Reduced field-of-view imaging by direct Fourier inversion
✍ Marijn E. Brummer; David Moratal-Pérez; Chung-Yi Hong; Roderic I. Pettigrew; Jos 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 404 KB

## Abstract A novel technique called “Noquist” is introduced for the acceleration of dynamic cardiac magnetic resonance imaging (CMRI). With the use of this technique, a more sparsely sampled dynamic image sequence is reconstructed correctly, without Nyquist foldover artifact. Unlike most other red

Dependence of venous enhancement on the
Dependence of venous enhancement on the field of view in 3D contrast-enhanced MRA using the elliptical centric view order
✍ Sean B. Fain; Stephen J. Riederer 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 304 KB

The dependence of venous suppression on the acquisition field of view (FOV) in elliptical centric 3D contrast-enhanced magnetic resonance angiography (CE-MRA) is studied theoretically and experimentally. It is hypothesized that a reduced FOV in an arterial phase acquisition results in improved venou