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. 2016 May 31;6:45. doi: 10.1186/s13550-016-0201-z

Fig. 3.

Fig. 3

Anterior bremsstrahlung planar (a), axial fused SPECT/CT (b), axial fused PET/CT (c) and co-registered CT (d) images of the right knee demonstrating a predominantly diffuse but also focal (non-diffuse) planar imaging Y-90 pattern with the focal component of the Y-90 activity located extra-articularly on fused PET/CT (superficial to the deepest capsular layer but deep to the medial patellar retinaculum). SPECT/CT was unable to definitively localise the focal component to the intra- or extra-articular space