Bilateral T2 mapping is a powerful tool for studying OA changes and investigating the role of between-knee asymmetry. qDESS allows for rapid T2 mapping but uses a model that requires knowledge of the FA. Hence, B1 inhomogeneities may affect the accuracy of T2 measurements. We propose a pixel-wise B1-correction method for qDESS T2 mapping exploiting an auxiliary B1 map to compute the actual FA used in the model. The technique was validated with phantom and with T2 measurements of femoral cartilage in simultaneous bilateral knee imaging. The results showed that B1-correction can mitigate T2 variations that were driven by B1-inhomogeneities.