T2 mapping is an imaging technique used in magnetic resonance imaging (MRI) to measure the transverse relaxation time (T2) of tissues in the body. T2 mapping provides information about the water content, collagen organization, and other biochemical properties of tissues, which can be helpful in diagnosing and monitoring various diseases and conditions such as arthritis, muscle injuries, and cartilage degeneration. By creating maps of T2 relaxation times in different tissues, clinicians can assess tissue health, evaluate treatment response, and track disease progression. T2 mapping is a valuable tool in musculoskeletal imaging, sports medicine, and research on tissue biomechanics.