Spin-echo SS-PARSE: a PARSE MRI method to estimate frequency, R2 and R2′ in a single shot

R2/R2* estimation errors in combined gradient- and spin-echo EPI sequences due to slice-profile differences between RF pulses

Introduction There is increased interest in a combined acquisition of gradient-echo (GE) and spin-echo (SE) signals for applications in DSC-PWI and fMRI. One of the main reasons is the different sensitivity of GEs and SEs to different compartments of the underlying microvasculature. While GEs are sensitive to both static and dynamic dephasing of spins, SEs are sensitive to dynamic spin dephasin...

To Parse or Not to Parse to Parse or Not to Parse

Writing meta interpreters is a well-known technique to enhance the expressive power of logic programs. However, the resulting interpretation overhead considerably slows down program execution. A natural approach to solving this eeciency problem consists in specialising the interpreter with respect to a given object program, thus removing the overhead. Fully achieving the latter goal however, tu...

Iterative Reconstruction for R2 Mapping Based on Radial Fast Spin-Echo MRI

Introduction: In fast spin-echo (FSE) imaging a train of spin echoes with an increasing T2 weighting is acquired after a preceding RF excitation. When combined with the radial encoding scheme each of the spin echoes coincides with the k-space center and, thus, all spokes carry an equal amount of low spatial frequency information. Therefore, the image contrast represents an average of the varyin...

To Parse or Not To Parse ( Extended

HamleDT: To Parse or Not to Parse?

We propose HamleDT – HArmonized Multi-LanguagE Dependency Treebank. HamleDT is a compilation of existing dependency treebanks (or dependency conversions of other treebanks), transformed so that they all conform to the same annotation style. While the license terms prevent us from directly redistributing the corpora, most of them are easily acquirable for research purposes. What we provide inste...