3D polymer gel dosimetry using a 3D (DESS) and a 2D MultiEcho SE (MESE) sequence

摘要

Both 2D R2 and 3D 1/DESS signals are linearly correlated with radiation doses for the range of 12- 48 Gy using VIPAR gels. VIPAR gels showed practically stable characteristics (same R2 values) for a period of five years. R2 measurements can serve as a more robust technique applied for polymer gel radiation dosimetry. The 3D DESS sequence can be used either standalone or in combination with the 2D MESE sequence for 3D MRI radiation dosimetry. The 3D DESS has the advantage of speed and reliability.