@article{QIMS12129,
author = {Jonathan Rodrigues and Kishore Minhas and Guido Pieles and Elisa McAlindon and Christopher Occleshaw and Nathan Manghat and Mark Hamilton},
title = {The effect of reducing spatial resolution by in-plane partial volume averaging on peak velocity measurements in phase contrast magnetic resonance angiography},
journal = {Quantitative Imaging in Medicine and Surgery},
volume = {6},
number = {5},
year = {2016},
keywords = {},
abstract = {Background: The aim of this study was to quantify the degree of the effect of in-plane partial volume averaging on recorded peak velocity in phase contrast magnetic resonance angiography (PCMRA).
Methods: Using cardiac optimized 1.5 Tesla MRI scanners (Siemens Symphony and Avanto), 145 flow measurements (14 anatomical locations; ventricular outlets, aortic valve (AorV), aorta (5 sites), pulmonary arteries (3 sites), pulmonary veins, superior and inferior vena cava)- in 37 subjects (consisting of healthy volunteers, congenital and acquired heart disease patients) were analyzed by Siemens Argus default voxel averaging technique (where peak velocity = mean of highest velocity voxel and four neighbouring voxels) and by single voxel technique (1.3×1.3×5 or 1.7×1.7×5.5 mm3) (where peak velocity = highest velocity voxel only). The effect of scan protocol (breath hold versus free breathing) and scanner type (Siemens Symphony versus Siemens Avanto) were also assessed. Statistical significance was defined as P},
issn = {2223-4306}, url = {https://qims.amegroups.org/article/view/12129}
}