Premium
Respiratory Blur in 3D Coronary MR Imaging
Author(s) -
Wang Yi,
Grist Thomas M.,
Korosec Frank R.,
Christy Paul S.,
Alley Marcus T.,
Polzin Jason A.,
Mistretta Charles A.
Publication year - 1995
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.1910330413
Subject(s) - coronary arteries , medicine , respiratory system , magnetic resonance imaging , image quality , nuclear medicine , radiology , cardiology , artery , computer science , artificial intelligence , image (mathematics)
3D MR imaging of coronary arteries has the potential to provide both high resolution and high signal‐to‐noise ratio, but it is very susceptible to respiratory artifacts, especially respiratory blurring. Resolution loss caused by respiratory blurring in 3D coronary imaging is analyzed theoretically and verified experimentally. Under normal respiration, the width for any Gaussian point spread function is increased to a new value that is at least several millimeters (about 3–4 mm). In vivo studies were performed to compare respiratory pseudo‐gated 3D acquisition with breath‐hold 2D acquisition. On average, the overall quality of a pseudo‐gated 3D image is worse than that of the corresponding breath‐hold 2D image ( P = 0.005). In most cases, respiratory blur caused coronary arteries in pseudo‐gated 3D data to have lower resolution than in breathhold 2D data.