T1&[rho] Imaging of Articular Cartilage using a CPMG Pulse Train for Spin Locking
Gold G, Han E, Hargreaves B, Wright G, Brittain J
Τ1ρ imaging is a promising method for detecting degenerative changes in articular cartilage. Spin locking for this technique is commonly performed using a continuous radiofrequency pulse. The purpose of our study was to compare spin locking using a CPMG pulse train with a standard continuous radiofrequency pulse in Τ1ρ imaging of cartilage. These two methods of spin locking produced equivalent relaxation times across a range of frequencies. Increasing spin lock frequency produced increasing Τ1ρ relaxation times. CPMG Τ1ρ imaging is a promising method of articular cartilage imaging.