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• W3036820908 abstract "•MR arthrography (MRA) of the hip was evaluated with and without gadolinium-based contrast agent (GBCA) solution. •T2-weighted sequences alone were not statistically inferior in detecting acetabular cartilage lesions and labral tears. •Prospective comparison of saline to GBCA-containing injectate may help clarify the necessity of continued GBCA use for MRA. AIM To determine if there is a difference in the detection of labral tears and cartilage lesions using the T2-weighted sequences of magnetic resonance arthrography (MRA) only, which simulate MRA with saline alone, compared with the full examination including T1-weighted sequences. MATERIALS AND METHODS One hundred hip MRA examinations performed at 3 T were identified retrospectively. Each study was reviewed by a musculoskeletal radiologist using either the T2-weighted sequences only (without gadolinium-based contrast agent [GBCA] effect) or the entire examination, including T1-weighted sequences (with GBCA effect). Receiver operating characteristic (ROC) curves were calculated for both groups and compared within a non-inferiority framework, using – 0.10 as the limit of non-inferiority. RESULTS For labral tears, the difference area under the curve (AUC) was –0.004 (95% confidence interval [CI]: –0.064–0.056, p=0.90). For acetabular cartilage lesions, the difference AUC was 0.011 (95% CI: –0.073–0.096, p=0.79). For femoral cartilage lesions, the difference AUC was –0.059 (95% CI: -0.206-0.087, p=0.43). CONCLUSION T2-weighted sequences alone were not inferior in diagnostic accuracy compared with the full examination (including T1-weighted sequences with intra-articular GBCA) in detecting acetabular cartilage lesions and labral tears. Further study with prospective comparison of saline injectate to GBCA-containing injectate may help clarify the necessity of continued GBCA use in MRA of the hip. To determine if there is a difference in the detection of labral tears and cartilage lesions using the T2-weighted sequences of magnetic resonance arthrography (MRA) only, which simulate MRA with saline alone, compared with the full examination including T1-weighted sequences. One hundred hip MRA examinations performed at 3 T were identified retrospectively. Each study was reviewed by a musculoskeletal radiologist using either the T2-weighted sequences only (without gadolinium-based contrast agent [GBCA] effect) or the entire examination, including T1-weighted sequences (with GBCA effect). Receiver operating characteristic (ROC) curves were calculated for both groups and compared within a non-inferiority framework, using – 0.10 as the limit of non-inferiority. For labral tears, the difference area under the curve (AUC) was –0.004 (95% confidence interval [CI]: –0.064–0.056, p=0.90). For acetabular cartilage lesions, the difference AUC was 0.011 (95% CI: –0.073–0.096, p=0.79). For femoral cartilage lesions, the difference AUC was –0.059 (95% CI: -0.206-0.087, p=0.43). T2-weighted sequences alone were not inferior in diagnostic accuracy compared with the full examination (including T1-weighted sequences with intra-articular GBCA) in detecting acetabular cartilage lesions and labral tears. Further study with prospective comparison of saline injectate to GBCA-containing injectate may help clarify the necessity of continued GBCA use in MRA of the hip." @default.
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• W3036820908 date "2020-09-01" @default.
• W3036820908 modified "2023-09-26" @default.
• W3036820908 title "Does gadolinium improve magnetic resonance arthrography of the hip beyond fluid distension alone?" @default.
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• W3036820908 doi "https://doi.org/10.1016/j.crad.2020.01.019" @default.
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