Sebastian Apprich1, Wolfgang Marik1, Gtz Hannes Welsch1,2, Marius Mayerhhoefer1, Klaus Friedrich1, Siegfried Trattnig1
1Department of Radiology, MR Centre - Highfield MR, Vienna, Austria; 2University Hospital of Erlangen, Department of Trauma Surgery, Germany
Objective was to compare T2/T2* relaxation times from patients with osteochondrosis disscans of the talus and healthy volunteers at 3T. The MR protocol consisted of a PD TSE sequence, and a 3D isotropic TrueFISP sequence. T2 relaxation times were obtained from a multi-echo spin-echo sequence, T2* maps were reconstructed from a sagittal GRE sequence. ROI analysis revealed significant higher T2/T2* values in patients with OCD compared to healthy volunteers. Quantitative T2/T2* mapping is a promising method to provide further information about the physiological status of the cartilage overlying an OCD and may improve the radiological staging.