Abstract：
BACKGROUND: UTE T2* cartilage mapping use in patients undergoing femoroacetabular impingement (FAI) has been lacking but may allow the detection of early cartilage damage.
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.
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.
摘要：
背景：UTET2*软骨标测在股骨髋臼撞击（FAI）患者中的应用一直缺乏，但可能允许检测早期软骨损伤。
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。
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。
