I would have gotten involved in this, if not for this, but I see by this that it’s all good anyway. Shamus, I was (mutely) righteous on your behalf for a while, though, if that counts for any karma 🙂 And good on you, Dave.
Month: February 2007
-
JJ Abrams and Star Trek
In case you heard from somewhere that ubergeek director JJ Abrams is no longer affiliated with the new Star Trek motion picture about Kirk, Spock and Bones at the Academy, rest easy – AICN has JJ’s personal assurance that he’s still onboard.
The reason it matters is because JJ is a Star Trek geek at heart – he has a genuine love of Trek, and that enthusiasm is going to be visible just as Lord of the Rings lived and breathed because of the passion of the Peter.
It also bears mentioning that the classic Trek is getting a CGI make-over, too.
-
PROPELLER-EPI for high-resolution DTI
PROPELLER-EPI with parallel imaging using a circularly symmetric phased-array RF coil at 3.0 T: application to high-resolution diffusion tensor imaging
A technique integrating multishot periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) and parallel imaging is presented for diffusion echo-planar imaging (EPI) at high spatial resolution. The method combines the advantages of parallel imaging to achieve accelerated sampling along the phase-encoding direction, and PROPELLER acquisition to further decrease the echo train length (ETL) in EPI. With an eight-element circularly symmetric RF coil, a parallel acceleration factor of 4 was applied such that, when combined with PROPELLER acquisition, a reduction of geometric distortions by a factor substantially greater than 4 was achieved. The resulting phantom and human brain images acquired with a 256 x 256 matrix and an ETL of only 16 were visually identical in shape to those acquired using the fast spin-echo (FSE) technique, even without field-map corrections. It is concluded that parallel PROPELLER-EPI is an effective technique that can substantially reduce susceptibility-induced geometric distortions at high field strength.
Chuang TC et al. Magn Reson Med. 2006 Dec;56(6):1352-8. PMID: 17051531
Discussion below the fold…. (more…)