Reliability and validity of lumbar disc peak quantification strategies utilizing magnetic resonance photos.
Biomed Tech (Berl). 2018 Feb 13;:
Authors: Abdollah V, Guardian EC, Battié MC
Disc peak has been a spotlight of analysis on disc degeneration and low again ache (LBP). Nevertheless, selecting an applicable technique to quantify disc peak stays controversial. The intention of the current research was to find out the reliability and assemble validity of disc peak quantification strategies. Repeated semi-automatic measurements of L4-5 and L5-S1 discs have been obtained from 43 T2-weighted mid-sagittal 3T magnetic resonance (MR) photos of 22 topics with LBP (43±13 years), blinded to prior measurements. Heights have been calculated with area-based strategies (utilizing 60%, 80% and 100% of the disc width), and point-based strategies (Hurxthal’s, Dabbs’ and mixing the 2). Intra-class correlation coefficients (ICC) and commonplace error of measurement (SEM) have been estimated. Assemble validity was assessed utilizing correlation coefficients. Intra-rater ICC(three,1) of the area-based disc peak measurements ranged from zero.84 to zero.99 with an inter-rater ICC(2,1) of zero.99. Measurements with point-based strategies had decrease intra- and inter-rater reliability ranging between zero.76 and zero.96 and between zero.84 and zero.98, respectively. Inter-rater SEM diverse between zero.2 and zero.three mm for area-based strategies and between zero.three and zero.7 mm for point-based strategies. Excluding Dabbs’, excessive correlations (r>zero.9) have been noticed between strategies. Space-based peak measurements utilizing partial disc width demonstrated wonderful reliability and assemble validity and outperformed point-based strategies.
PMID: 29432200 [PubMed – as supplied by publisher]