"Determining the longitudinal accuracy and reproducibility of T1 and T2" by Madeline E. Carr, Kathryn E. Keenan et al.
Purpose: To determine baseline accuracy and reproducibility of T1 and T2 relaxation times over 12 months on a dedicated radiotherapy MRI scanner. Methods: An International Society of Magnetic Resonance in Medicine/National Institute of Standards and Technology (ISMRM/NIST) System Phantom was scanned monthly on a 3T MRI scanner for 1 year. T1 was measured using inversion recovery (T1-IR) and variable flip angle (T1-VFA) sequences and T2 was measured using a multi-echo spin echo (T2-SE) sequence. For each vial in the phantom, accuracy errors (%bias) were determined by the relative differences in...
Source: uow.edu.au