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Partial volume effects on vascular T 2 measurements
Author(s) -
Stainsby Jeff A.,
Wright Graham A.
Publication year - 1998
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910400322
Subject(s) - signal (programming language) , sampling (signal processing) , volume (thermodynamics) , partial volume , relaxation (psychology) , biomedical engineering , noise (video) , nuclear magnetic resonance , range (aeronautics) , t2 relaxation , materials science , nuclear medicine , computer science , physics , magnetic resonance imaging , medicine , artificial intelligence , radiology , computer vision , composite material , quantum mechanics , programming language , filter (signal processing) , image (mathematics)
Quantitative, vascular T 2 measurements are of interest for applications such as MR oximetry. In the situation of a vessel with long T 2 relaxation times embedded in tissue with relatively short T 2 values, contamination of the blood signal from the surrounding tissue can bias T 2 measurements. Limited data sampling and vessels running obliquely through the imaging slice can cause significant signal contamination. Using a model of these effects to predict the behavior of T 2 measurements under a range of conditions, a set of parameters that provides the best combination of measurement accuracy with a signal‐to‐noise ratio as high as possible is proposed.