Multimodal approach in the use of clinical scoring, morphological MRI and biochemical T2-mapping and diffusion-weighted imaging in their ability to assess differences between cartilage repair tissue after microfracture therapy and matrix-associated autologous chondrocyte transplantation: a pilot study - Welsch, G H; Trattnig, S; Domayer, S; Marlovits, S; White, L M; Mamisch, T C (Osteoarthritis Cartilage, 2009)