Buie HR, Campbell GM, Klinck RJ, MacNeil JA, Boyd SK. Automatic segmentation of cortical and trabecular compartments based on a dual threshold technique for in vivo micro-CT bone analysis. Bone (2007) 41:505–515. doi:10.1016/j.bone.2007.07.007

Conaghan P, Bird P, Ejbjerg B, O’Connor P, Peterfy C, McQueen F, Lassere M, Emery P, Shnier R, Edmonds J, et al. The EULAR-OMERACT rheumatoid arthritis MRI reference image atlas: The metacarpophalangeal joints. Ann Rheum Dis (2005) doi:10.1136/ard.2004.031815

Van Der Heijde D. How to Read Radiographs According to the Sharp/van der Heijde Method. (2000) 261–263.

Sharp JT, Lidsky MD, Collins LC, Moreland J. Methods of scoring the progression of radiologic changes in rheumatoid arthritis. Correlation of radiologic, clinical and laboratory abnormalities. Arthritis Rheum (1971) 14:706–720. doi:10.1002/art.1780140605