Color Insert

FDG PET/CT showing soft tissue mass. FDG PET/CT scan in a patient with a soft tissue sarcoma overlying the right scapula. (D) Axial anatomically co-registered (fused) PET/CT image of the mid chest. The soft tissue mass demonstrates high PET signal, corresponding to increased radiotracer uptake in regions with increased glycolysis.

Chondromalacia patella with excessive lateral pressure syndrome (ELPS). (C) Axial T2 mapping color-coded cartigram sequence in the same patient demonstrates loss of the normal T2 homeostasis in the cartilage demonstrated by a change in the cartilage color scale from a “normal red color” to an abnormal yellow color in the lateral patellar facet (wide arrow) and also to an abnormal green color in the opposing lateral trochlear facet (thin arrow).  

Pre- and postoperative MR evaluation of chondromalacia treated with matrix-induced autologous chondrocyte implantation (MACI). (C) Subsequent arthroscopic view of the same patient confirms the large grade 4 cartilage defect with an abrupt step off at its peripheral margins (arrows). 

Calcific tendinosis. Long axis of the supraspinatus tendon demonstrating (D) acute subacromial bursitis (asterisks) with hyperemia seen in Doppler mode, due to the intra-bursal resorption of a calcification (arrows). 

Synovitis and synovial thickening in rheumatoid arthritis of the wrist. (B) Power Doppler ultrasound showing intense synovial hyperemia. 

Ewing sarcoma of the right knee. (A) Axial-fused FDG PET-CT of Ewing sarcoma of the right lateral distal femur and knee joint capsule in a 21-year-old man showing moderate FDG uptake in the primary tumor measuring 2.9 SUV.

Bone metastasis from renal cell carcinoma. (B) Axial-fused image showing an expansile lytic bony lesion of the xiphoid with moderate FDG accumulation measuring approximately 6.5 SUV, biopsy-proven metastatic renal cell carcinoma. (C) Axial-fused image with bone CT window showing coarsened trabecular markings in the right ilium in the region of increased uptake on the bone scan without associated FDG accumulation. Findings more likely representing Paget disease than a metastatic lesion. In the case of both lesions, hybrid PET-CT imaging helped guide biopsy decisions and further diagnostic and prognostic information.

Soft tissue sarcoma. (E) Fused FDG PET-CT (left) and identical CT only (right) images through the inferior aspect of the large left anterior thigh tumor showing localization of FDG peripherally in the medial and posterior aspect of the tumor ...