Knee MR Using a Body Coil is Equivalent to CT in Measuring the TT-TG Distance: Removing the Systematic Bias.
| Autor: | Aivazoglou LU; Departamento de Radiologia, Grupo Fleury Medicina e Saúde, São Paulo, SP, Brasil., Toma MK; Departamento de Radiologia, Grupo Fleury Medicina e Saúde, São Paulo, SP, Brasil., Arruda PHC; Departamento de Radiologia, Grupo Fleury Medicina e Saúde, São Paulo, SP, Brasil., Ormond Filho AG; Departamento de Radiologia, Grupo Fleury Medicina e Saúde, São Paulo, SP, Brasil., Guimarães JB; Departamento de Radiologia, Grupo Fleury Medicina e Saúde, São Paulo, SP, Brasil., Silva FD; Departamento de Radiologia, Grupo Fleury Medicina e Saúde, São Paulo, SP, Brasil. |
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| Jazyk: | angličtina |
| Zdroj: | Revista brasileira de ortopedia [Rev Bras Ortop (Sao Paulo)] 2021 Mar 22; Vol. 57 (1), pp. 82-88. Date of Electronic Publication: 2021 Mar 22 (Print Publication: 2022). |
| DOI: | 10.1055/s-0040-1718511 |
| Abstrakt: | 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 from 17 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 ± 4.2 mm and 17.3 ± 4.2 mm) and of MRI (16.2 ± 3.7 mm and 16.5 ± 4.1 mm) 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. Competing Interests: Conflito de Interesses Os autores não têm conflito de interesses a declarar. (Sociedade Brasileira de Ortopedia e Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ ).) |
| Databáze: | MEDLINE |
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