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Comparison of methods to assess quadriceps muscle volume using magnetic resonance imaging
Author(s) -
Nordez Antoine,
Jolivet Erwan,
Südhoff Ingrid,
Bonneau Dominique,
de Guise Jacques A.,
Skalli Wafa
Publication year - 2009
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.21867
Subject(s) - magnetic resonance imaging , volume (thermodynamics) , interpolation (computer graphics) , scanner , spline interpolation , nuclear medicine , mathematics , computer science , medicine , biomedical engineering , physics , radiology , motion (physics) , computer vision , artificial intelligence , statistics , quantum mechanics , bilinear interpolation
Purpose To compare the precision of four methods to estimate the volume of quadriceps muscles using axial MRI. Materials and Methods Entire legs of 10 healthy young subjects were scanned using a 1.5 Tesla magnetic resonance imaging scanner and 4‐mm‐thick sections without any gaps. Quadriceps muscles were outlined on all of the slices to obtain the MRI reference standard measure of quadriceps muscle volume. This MRI reference standard was compared with the volume estimated using (i) the truncated cone formula, (ii) the Cavalieri method, (iii) a cubic spline interpolation of missing cross sectional areas, and, (iv) the deformation of a parametric specific object. For each method, 3 to 21 slices were used. Results The average volume error was significantly ( P < 0.001) different in comparing the four methods (4.4%, 2.3%, 1.1%, and 1.2%, respectively). In addition, the number of slices required to reach a given volume error was significantly ( P < 0.001) different across all methods (respectively, 12, 9, 5, and 7 slices required to reach a volume error of 1.1%). Conclusion While methods based on interpolation and deformation of a parametric specific object have not been used in literature, these two methods are the most precise approaches to reach a given level of precision. J. Magn. Reson. Imaging 2009;30:1116–1123. © 2009 Wiley‐Liss, Inc.