Purpose: The main focus of this work is to continue investigations into the Monte Carlo
predicted skin doses seen in MRI‐guided radiotherapy. In particular, the authors aim to …

… The latter are used to evaluate the IMRT capability of the integrated MRI linac. … of the position
of the linac. A major concern is the calibration of the world coordinates of the MRI. Present …

… 6 MV linac spectrum. (d) Electron flux through the exit surface for various exit surface
orientations. … passing the exit surface during one simulation, divided by the exit surface area and …

… Thus, it is expected that spiraling contaminant electrons (hereon referred to as SCE) will
deposit dose predominantly to surfaces oriented perpendicular to the flux lines of the magnetic …

… , this orientation can lead to higher dose to the patient surface … the linac head and air volume
between the patient and linac … The large fringe field of the Australian MRI-linac system acts …

… The development of an MRI-Linac system introduces new and … , particle energy, and the
orientation of the incident beam relative … The large surface dose from a high field inline MR-linac …

… One repercussion of this phenomenon is increased dose at proximal aspects of air
cavities and at the skin surface, which is also dependent on the orientation of the distal …

… exit surface dose irrespective of exit surface orientation. However, at higher magnetic field
strengths and for large surface … The exit dose does not increase in the longitudinal linac-MR …

… patient's chest also introduces surface orientation effects. The surface dose is reduced in …
central axis results from a less than optimal exit surface angle. Dose differences in excess of 40…

… (2) Noise measured with a surface RF coil produced a 25% elevation of background …
establish the feasibility of a high field MRI-linac in the inline beam orientation. This proof-of-concept …