Purpose: The development of ultrashort echo time (UTE) MRI sequences has led to improved imaging of tissues with short T relaxation times, such as the deep layer cartilage and meniscus. UTE combined with adiabatic T preparation (UTE-Adiab-T) is an MRI measure with low sensitivity to the magic angle effect. This study aimed to investigate the sensitivity of UTE-Adiab-T to mechanical load-induced deformations in the tibiofemoral cartilage and meniscus of human cadaveric knee joints.
View Article and Find Full Text PDFObjective: Ultrashort echo time (UTE) magnetic resonance imaging (MRI) sequences have improved imaging of short T2 musculoskeletal (MSK) tissues. UTE-MRI combined with magnetization transfer modeling (UTE-MT) has demonstrated robust assessment of MSK tissues. This study aimed to investigate the variation of UTE-MT measures under mechanical loading in tibiofemoral cartilage and meniscus of cadaveric knee joints.
View Article and Find Full Text PDFPurpose: To investigate the magic angle effect in three-dimensional ultrashort echo time Cones Adiabatic T (3D UTE Cones-AdiabT ) imaging of articular cartilage at 3T.
Methods: The magic angle effect was investigated by repeated 3D UTE Cones-AdiabT imaging of eight human patellar samples at five angular orientations ranging from 0° to 90° relative to the B field. Cones continuous wave T (Cones-CW-T ) and Cones- sequences were also applied for comparison.