The purpose of this study is to evaluate the interobserver agreement in staging hip chondropathy by fat-saturated protond density fast spin acho (fs PDF FSE) and 3D FIESTA (Fast Imaging Employing Steady State Acquisition) at arthro-MRI.
This study is performed to determine whether 3D sequences can improve the diagnostic performance of a routine MR protocol for detecting cartilage lesions within the hip joint after intrarticular injection of contrast media.
Methods and Materials
BetweenFebruary and July 2012 were recruited for this study40 consecutive patients (26 male,
During standard arthro-MRI of the hip we peformed 3D FIESTA at least fs PD FSE in three orthogonal planes and in radial acquisition.
The 3D FIESTA images(0.6 mm thickness,
0.3 mm spacing,
5'25'')were post processed and 2 mm multiplanar reconstruction with average projection.
MRI imagingof each subject was performed on a 1.5 Tesla system (Signa,
GE Medical Systems,
after intrarticular injection of 12- 20 ml of contrast-media(Gd-DOTA...
fs PD FSE sequence allowed moderate agreement: 24 patients,
KCohen:0.72;revealing difficulty in staging mild grade (I-II) of chondropathy.
3D FIESTA reconstruction allowed good agreement: 36 patientsK-Cohen:0.72.
The grade O Outerbridge classification shows articular cartilage normal:intermedial signal intensity compared with the low signal intensity of cortex bone and high signal intensity of intrarticular contrast media.
In grade I there ismoderate high signal intensity ofcartilage layer without fragmentation or fissuring.
Grade II: fissuring and fibrillation demonstrate intermediate-high signal intensity
Grade III:intermediate-high signal intensityinvolve more than half of...
3D FIESTA could make easier the chondropathy staging at arthroMRI of hip and increase the interobserver agreement.
This sequence could be useful added to routine protocol of arthro MRI,
even if these results are still to be compared to arthroscopic data.
Woods, A.Munoz Del Rio,
Clinical Usefulness of Adding 3D Cartilage Imaging Sequences to a Routine Knee MR Protocol Clinical Usefulness of Adding 3D Cartilage Imaging Sequences to a Routine Knee MR Protocol.
Jan 2011 (159-167).
Hip morfology influences the pattern of damage to the acetabular cartilage: femoroacetabular impingement asd cause of early osteoartrhitis of the hip.J Bone Joint Surg Br 2005 Jul; 87 (7): 1012-8