title: Evaluation of chondral repair using quantitative MRI.
abstract: Various quantitative magnetic resonance imaging (qMRI) biomarkers, including but not limited to parametric MRI mapping, semiquantitative evaluation, and morphological assessment, have been successfully applied to assess cartilage repair in both animal and human studies. Through the interaction between interstitial water and constituent macromolecules the compositional and structural properties of cartilage can be evaluated. In this review a comprehensive view of a variety of quantitative techniques, particularly those involving parametric mapping, and their relationship to the properties of cartilage repair is presented. Some techniques, such as T2 relaxation time mapping and delayed gadolinium-enhanced MRI of cartilage (dGEMRIC), are well established, while the full potential of more recently introduced techniques remain to be demonstrated. A combination of several MRI techniques is necessary for a comprehensive characterization of chondral repair.
authors.affiliation: Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland. miika.nieminen@oulu.fi
authors.forename: Miika T
authors.initials: MT
authors.lastname: Nieminen
authors.forename: Mikko J
authors.initials: MJ
authors.lastname: Nissi
authors.forename: Lauri
authors.initials: L
authors.lastname: Mattila
authors.forename: Ilkka
authors.initials: I
authors.lastname: Kiviranta
mesh_terms: D002358:Cartilage, Articular / Q000473:pathology* / Q000601:surgery*; D050724:Fractures, Cartilage / Q000473:pathology* / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods*; D016896:Treatment Outcome