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Abstract #2721

Reduction of motion effects in myocardial arterial spin labeling

Verónica Aramendía-Vidaurreta1,2, Pedro M. Gordaliza3,4, Marta Vidorreta5, Rebeca Echeverría-Chasco1,2, Gorka Bastarrika1,2, Arrate Muñoz-Barrutia3,4, and María A. Fernández-Seara1,2
1Radiology, Clínica Universidad de Navarra, Pamplona, Spain, 2IdiSNA, Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain, 3Universidad Carlos III de Madrid, Madrid, Spain, 4Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain, 5Siemens Healthineers, Madrid, Spain

This work investigated the impact of three different breathing strategies, named breathhold (BH), synchronized-breathing (SB) and free-breathing (FB), together with motion detection and correction algorithms in myocardial arterial spin labeling (ASL) images. Results indicate the superiority of FB combined with pairwise registration, which showed higher accuracy (in synthetic images) and higher intrasession reproducibility together with lower variability across subjects (in in vivo images). BH and SB after motion detection provided similar results, but their practical application is more complicated as it demands the subject's collaboration to follow the respiratory pattern in SB or perform the apneas in BH.

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