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. 2021 Dec 11;11(12):2337. doi: 10.3390/diagnostics11122337

Figure 9.

Figure 9

Magnetic resonance imaging-computed tomography fusion images (MCFIs) and corresponding intraoperative findings. The MCFIs are shown in the left panels, and the corresponding intraoperative findings are shown in the right panels. Here, the 3D CT model of the humerus and the 3D MRI model of the articular cartilage are shown in gray and yellow, respectively. (a) Case 12. The MCFI accurately reproduced the articular cartilage fissures (ACFs) in areas 1, 2, 3, and 4 (arrows). The lesion was predicted as unstable because the segmented subchondral bone (SSB) was present underneath the ACFs, and the articular surface was protruded. As predicted, the lesion was classified as unstable intraoperatively. (b) Case 8. The MCFI correctly reproduced the protrusion of the articular surface in areas 2 and 3 (arrows). The lesion was predicted as unstable owing to the presence of the articular surface deformity (ASD) and SSB underneath the ACF. The lesion was unstable on palpation, as predicted. (c) Case 16. The MCFI correctly reproduced the ACF and ASD in areas 2 and 3 (arrows). The lesion was predicted as unstable based on these findings and intraoperatively classified that the lesion was unstable. (d) Case 9. The MCFI correctly reproduced the ACFs in areas 1, 3, and 4 (arrows). The lesion was predicted as unstable based on the presence of the SSB underneath the ACF, as well as ASD. The lesion was unstable intraoperatively on palpation, as predicted. (e) Case 5. The MCFI correctly reproduced the ACF in areas 2 and 3 (arrows). The lesion was predicted as unstable because of the presence of ACF and the SSB underneath and ASD. The lesion was classified as unstable on palpation.