Technical Improvements in Renal Scanning

Technical Improvements in Quantitative Susceptibility Mapping Technical Improvements in Quantitative Susceptibility Mapping

............................................................................................................................. iv Acknowledgements ........................................................................................................... vi List of Figures .................................................................................................................... ix List...

Investigating some technical improvements to glueball calculations

We briefly discuss some issues concerning including the pseudoscalar glueball interpolating operators into the variational basis for computing the masses of the η and η ′ mesons. As a start we present some preliminary results for the correlators from pseudoscalar glueball operators on n f = 2+1+1 twisted mass gauge configurations. Preliminary results for the effect of open boundary conditions o...

Recent Improvements in the NASA Technical Report Server

The NASA Technical Report Server (NTRS), a World Wide Web report distribution service, is modified to allow: 1) Parallel database queries, significantly decreasing user access times by an average factor of 2.3; 2) access from clients behind firewalls and/or proxies which truncate excessively long Uniform Resource Locators (URLs); 3) Access to non-Wide Area Information Server (WAIS) databases, a...

Renal cell carcinoma--serendipitous scanning.

Scanning linear estimation: improvements over region of interest (ROI) methods.

In tomographic medical imaging, a signal activity is typically estimated by summing voxels from a reconstructed image. We introduce an alternative estimation scheme that operates on the raw projection data and offers a substantial improvement, as measured by the ensemble mean-square error (EMSE), when compared to using voxel values from a maximum-likelihood expectation-maximization (MLEM) recon...