𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Elimination of nyquist ghosts in MRI by using fast linogram imaging

✍ Scribed by Neville Gai; Leon Axel


Book ID
102905561
Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
743 KB
Volume
7
Category
Article
ISSN
1053-1807

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

Timing inaccuracies between the even and odd echoes lead to the formation of Nyquist ghosts in conventional (blipped) echo‐planar imaging (EPI). A fast radial scanning method based on the linogram sampling geometry was designed and implemented. No ghosting effects are seen with this scheme, and correction for timing inaccuracies is performed using simple postprocessing steps before reconstruction.


📜 SIMILAR VOLUMES


Elimination of Nyquist ghosting caused b
✍ Stuart M. Grieve; Andrew M. Blamire; Peter Styles 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 324 KB

## Abstract Echo‐planar imaging (EPI) commonly suffers from ghosting artifacts caused by zero‐ or first‐order phase differences between the odd and even echoes that constitute an EPI dataset. Small‐bore imaging systems with shielded gradients may suffer significantly from cross‐term eddy currents d

Automatic correction of echo-planar imag
✍ Yoon-Chul Kim; Jon-Fredrik Nielsen; Krishna S. Nayak 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 397 KB

## Abstract ## 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. ## Materials and Methods An automatic ghosting correction technique was de