TY - JOUR
T1 - KneeMRUsing a Body Coil is Equivalent toCT inMeasuring the TT-TG Distance
T2 - Removing the Systematic Bias
AU - Aivazoglou, Laís Uyeda
AU - Toma, Mariana Kei
AU - Arruda, Pedro Henrique Coelho
AU - Ormond Filho, Alipio Gomes
AU - Guimarães, Julio Brandão
AU - Silva, Flávio Duarte
N1 - Publisher Copyright:
© 2021 Georg Thieme Verlag. All rights reserved.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - Objective To compare magnetic resonance imaging (MRI) using a body coil with computed tomography (CT) in measuring the tibial tubercle-trochlear groove distance (TT-TG) and the patellar tendon-cartilaginous trochlear groove (PT-CTG) distances, and evaluate interrater reliability. Methods The study group consisted of 34 knees from17 asymptomatic subjects with no history of knee pathology, trauma or surgery. A low-dose CT scan and an axial T1-weighted MRI sequence of the knees were performed with rigorous standardization of the positioning with full extension of the knees and parallel feet. Two musculoskeletal radiologists performed the measurements independently. The reliability of the TT-TG and PT-CTG distances on CT (17.1 ± 4.2mm and 17.3 ± 4.2mm) and of MRI (16.2 ± 3.7mm and 16.5 ± 4.1mm) was assessed by intraclass correlation coefficient (ICC [2,1]) and Bland-Altman graphs, as well as the interrater reliability for both methods. Results Good reliability and agreement was observed between CT and MRI measurements for TT-TG and PT-CTG, with an ICC of 0.774 (p < 0.001) and 0.743 (p < 0.001), respectively, and no systematic bias was observed. The interrater reliability was excellent for all measurements on both imaging methods. Conclusion This was the first study that compared MRI using a body coil with CT in measuring the TT-TG distance, with the potential clinical implication that the CT in this clinical setting could be avoided.
AB - Objective To compare magnetic resonance imaging (MRI) using a body coil with computed tomography (CT) in measuring the tibial tubercle-trochlear groove distance (TT-TG) and the patellar tendon-cartilaginous trochlear groove (PT-CTG) distances, and evaluate interrater reliability. Methods The study group consisted of 34 knees from17 asymptomatic subjects with no history of knee pathology, trauma or surgery. A low-dose CT scan and an axial T1-weighted MRI sequence of the knees were performed with rigorous standardization of the positioning with full extension of the knees and parallel feet. Two musculoskeletal radiologists performed the measurements independently. The reliability of the TT-TG and PT-CTG distances on CT (17.1 ± 4.2mm and 17.3 ± 4.2mm) and of MRI (16.2 ± 3.7mm and 16.5 ± 4.1mm) was assessed by intraclass correlation coefficient (ICC [2,1]) and Bland-Altman graphs, as well as the interrater reliability for both methods. Results Good reliability and agreement was observed between CT and MRI measurements for TT-TG and PT-CTG, with an ICC of 0.774 (p < 0.001) and 0.743 (p < 0.001), respectively, and no systematic bias was observed. The interrater reliability was excellent for all measurements on both imaging methods. Conclusion This was the first study that compared MRI using a body coil with CT in measuring the TT-TG distance, with the potential clinical implication that the CT in this clinical setting could be avoided.
KW - knee
KW - magnetic resonance imaging
KW - patellar instability
KW - tomography, x-ray computed
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U2 - 10.1055/s-0040-1718511
DO - 10.1055/s-0040-1718511
M3 - Article
C2 - 35198113
AN - SCOPUS:85125479214
SN - 0102-3616
VL - 57
SP - 82
EP - 88
JO - Revista Brasileira de Ortopedia
JF - Revista Brasileira de Ortopedia
IS - 1
ER -