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Correction of left ventricular wall thickening from short‐axis cine MRI for basal‐descent through‐plane motion
Author(s) -
Chai JyhWen,
Chen WeiHsun,
Chen HsianMin,
Chiang ChihMing,
Huang JinLong,
Fu Jachih,
ChiChang Chen Clayton,
Lee SanKan
Publication year - 2011
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.22462
Subject(s) - basal (medicine) , short axis , thickening , long axis , medicine , translation (biology) , nuclear medicine , cardiology , anatomy , geometry , materials science , mathematics , chemistry , biochemistry , polymer science , messenger rna , insulin , gene
Purpose To solve the problem of the basal descent movement in quantification of the regional left ventricular (LV) myocardial wall thickness (WTh) and wall thickening (%WT) in short‐axis (SA) cine MRI for effectively assessing the regional wall motion of LV myocardium. Materials and Methods LV long‐axis tagged MRI and SA cine MRI were performed to calculate the longitudinal translation and circumferential WTh of LV myocardium in eight normal volunteers. The new SA end‐systolic thickness (EST) data were reconstructed from the original EST data, based on the quantified longitudinal translation of LV myocardium. Results The mean %WT of six segments in the basal section after correction was significantly different from that before correction in both intra‐ and inter‐operator experiments. The polar map also showed the significant improvement of the variability of regional %WT and lack of quantification of %WT in the most basal SA slices after correction. Conclusion The proposed technique demonstrated an important advantage to calculate the %WT in the most basal SA myocardial tissue, which was considered difficult to be achieved using cine MRI. J. Magn. Reson. Imaging 2011;33:464–473. © 2011 Wiley‐Liss, Inc.