OBJECTIVE: To assess the reproducibility of UTE T2* cartilage mapping and determine the difference in UTE T2* values between FAI and asymptomatic patients and to evaluate the correlation between UTE T2* values and patient-reported symptoms.
METHODS: Prospective evaluation of both hips (7 FAI and 7 asymptomatic patients). Bilateral hip 3-T MRI scans with UTE T2* cartilage maps were acquired. A second MRI scan was acquired 1-9 months later. Cartilage was segmented into anterosuperior, superior, and posterosuperior regions. Assessment was made of UTE T2* reproducibility (ICC). Mean UTE T2* values in patients were compared (t-tests) and correlation was made with patient-reported outcomes (Spearman\'s).
RESULTS: ICCs of mean UTE T2* were as follows: acetabular, 0.82 (95% CI=0.50-0.95); femoral, 0.76 (95% CI=0.35-0.92). Significant strong correlation was found between mean acetabular UTE T2* values and iHOT12 (ρ = -0.63) and moderate correlation with mHHS (ρ = -0.57). There was no difference in mean UTE T2* values between affected vs. non-affected FAI hips. FAI-affected hips had significantly higher values in acetabulum vs. asymptomatic patients (13.47 vs. 12.55 ms). There was no difference in mean femoral cartilage values between the FAI-affected hips vs. asymptomatic patients. The posterosuperior femoral region had a higher mean value in non-affected FAI hips vs. asymptomatic patients (12.60 vs. 11.53 ms).
CONCLUSIONS: UTE T2* cartilage mapping had excellent reproducibility. Affected FAI hips had higher mean acetabular UTE T2* values than asymptomatic patients. Severity of patient-reported symptoms correlates with UTE T2* acetabular cartilage values.
目的:评估UTET2*软骨标测的可重复性,并确定FAI和无症状患者之间UTET2*值的差异,并评估UTET2*值与患者报告症状之间的相关性。
方法:对两个髋关节(7例FAI和7例无症状患者)进行前瞻性评估。获得具有UTET2*软骨图的双侧髋部3-TMRI扫描。1-9个月后进行第二次MRI扫描。软骨被分割成前上,上级,和后优越地区。对UTET2*再现性(ICC)进行评估。比较患者的平均UTET2*值(t检验),并与患者报告的结果进行相关性(Spearman's)。
结果:平均UTET2*的ICC如下:髋臼,0.82(95%CI=0.50-0.95);股骨,0.76(95%CI=0.35-0.92)。在平均髋臼UTET2*值与iHOT12(ρ=-0.63)之间发现了显着的强相关性,而与mHHS的中度相关性(ρ=-0.57)。受影响与受影响之间的平均UTET2*值没有差异未受影响的FAI臀部。受FAI影响的髋臼的值明显高于无症状患者(13.47vs.12.55ms)。FAI受影响的髋关节与髋关节之间的平均股骨软骨值没有差异。无症状患者。在未受影响的FAI髋关节中,股骨后上区域的平均值较高。无症状患者(12.60vs.11.53ms)。
结论:UTET2*软骨标测具有良好的可重复性。受影响的FAI髋关节的平均髋臼UTET2*值高于无症状患者。患者报告症状的严重程度与UTET2*髋臼软骨值相关。