Technical Note: Penumbral width trimming in solid lung dose profiles for 0.9 and 1.5 T <scp>MRI</scp>‐Linac prototypes

Abstract

The trimming of penumbral widths due to magnetic fields in solid water and lung was demonstrated and compared to 0 T. The 0.9 and 1.5 T field trimmed the penumbra by up to 2.5 ± 0.1 mm and 4.4 ± 0.1 mm respectively.