The Effects of External Laser Positioning Systems for MRI Simulation on Image Quality and Quantitative MRI Values
This study demonstrates that while activating external laser positioning systems (ELPS) during MRI simulation generally preserves quantitative values, it significantly degrades image quality—specifically causing a four-fold signal-to-noise ratio drop and geometric distortion errors when using the integrated body coil—necessitating clear clinical guidelines to avoid ELPS interference during imaging.