Constructing a new generation Radiotherapy system:
Constructing a new generation Radiotherapy system:

(Stageplek voor alle studies)

Constructing a new generation Radiotherapy system:

Integrating a linear accelerator and a 1.5 T MRI scanner

(2 PhD students physics (or alike))

Radiotherapy aims to cure cancer patients by destroying the tumour tissue with ionising radiation. High precision irradiation requires daily, real-time imaging of the tumour. MRI offers the best available soft-tissue contrast imaging for treatment guidance. Therefore the UMC Utrecht is, together with industry, constructing the world's first radiotherapy system integrated with a 1.5 T MRI scanner. The aim of the project is to prove that radiation delivery with mm accuracy under MRI guidance is feasible. For this project we are looking for two excellent PhD-students.

 

The first PhD student will focus on the radiation dose distribution in a patient when irradiated by this new system. The permanent 1.5 T magnetic field will affect the dose distribution, which can be quantified by means of Geant4 Monte Carlo simulations and measurements. The candidate will be responsible for the dose calculations and the corresponding experimental validation for the hybrid MRI radiotherapy system. The candidate should have a Master's degree in physics or related field, progamming skills are preferred.

 

The second PhD student will focus on the accuracy of the MR images. These can be distorted by either deviations in hardware or by the susceptibility of the patient itself. Since the images will be used for high precision treatment guidance, these distortions must be solved or compensated for. The candidate will be responsible for the geometric correction of these hardware induced deviations, the patient induced susceptibility artifacts and the calibration of the coordinate systems of the MRI and the irradiation beam. The results have to be experimentally validated in the new system. The candidate should have a Master's degree in physics or related field.

 

More information, for general information please go to the website of the Department of Radiotherapy of the UMC Utrecht, www.radiotherapie.nl for project specific information contact dr. Bas Raaymakers, 088-7556106, b.w.raaymakers@umcutrecht.nl


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