Rigid matching of two 3D patellae data sets for voxel based comparison
Mendlik T, Stahl R, Raya J, Glaser C, Reiser M, Dietrich O
Ludwig Maximilian University of Munich
We demonstrate that a simple rigid matching is able to position corresponding MRI data sets in space so that short time comparisons of measurements can be made on a voxel basis with good accuracy. Reliability of the method was assessed both comparing repeated measurements on healthy volunteers and performing numerical simulations. A comparison of T2 relaxation times and cartilage thickness after matching showed a mean relative error of 11.9%. Simulations on mathematical patella models showed a good correlation of the calculated and exact positions.