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@article{Abraham:2015:10.1002/jmri.24902,
author = {Abraham, CL and Bangerter, NK and McGavin, LS and Peters, CL and Drew, AJ and Hanrahan, CJ and Anderson, AE},
doi = {10.1002/jmri.24902},
journal = {Journal of Magnetic Resonance Imaging},
pages = {1329--1338},
title = {Accuracy of 3D dual echo steady state (DESS) MR arthrography to quantify acetabular cartilage thickness},
url = {http://dx.doi.org/10.1002/jmri.24902},
volume = {42},
year = {2015}
}

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TY  - JOUR
AB  - <jats:sec><jats:title>Purpose</jats:title><jats:p>To deploy and quantify the accuracy of 3D dual echo steady state (DESS) MR arthrography with hip traction to image acetabular cartilage. Clinical magnetic resonance imaging (MRI) sequences used to image hip cartilage often have reduced outofplane resolution and may lack adequate signaltonoise to image cartilage.</jats:p></jats:sec><jats:sec><jats:title>Materials and Methods</jats:title><jats:p>Saline was injected into four cadaver hips placed under traction. 3D DESS MRI scans were obtained before and after cores of cartilage were harvested from the acetabulum; the two MRIs were spatially aligned to reference core positions. The thickness of cartilage cores was measured under microscopy to serve as the reference standard. 3D reconstructions of cartilage and subchondral bone were generated using automatic and semiautomatic image segmentation. Cartilage thickness estimated from the 3D reconstructions was compared to physical measurements using Bland–Altman plots.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>As revealed by the automatic segmentation mask, saline imbibed the joint space throughout the articulating surface, with the exception of the posteroinferior region in two hips. Locations where air bubbles were introduced and regions of suspected low density bone disrupted an otherwise smooth automatic segmentation mask. Automatic and semiautomatic segmentation yielded a bias ± repeatability coefficient (95% limits of agreement) of 0.10 ± 0.51 mm (−0.41 to 0.61 mm) and 0.06 ± 0.43 mm (−0.37 to 0.49 mm), respectively.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>Cartilage thickness can be estimated to within ∼0.5 mm of the physical value with 95% conf
AU  - Abraham,CL
AU  - Bangerter,NK
AU  - McGavin,LS
AU  - Peters,CL
AU  - Drew,AJ
AU  - Hanrahan,CJ
AU  - Anderson,AE
DO  - 10.1002/jmri.24902
EP  - 1338
PY  - 2015///
SN  - 1053-1807
SP  - 1329
TI  - Accuracy of 3D dual echo steady state (DESS) MR arthrography to quantify acetabular cartilage thickness
T2  - Journal of Magnetic Resonance Imaging
UR  - http://dx.doi.org/10.1002/jmri.24902
UR  - https://doi.org/10.1002/jmri.24902
VL  - 42
ER  -

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