Somayeh is a Ph.D. student at the Tehran University of Medical Sciences where she previously worked as a medical physicist in the Cancer Institute of the university for six years. With ethical approval from her university, she aims to advance the cancer treatment in her department. Her project is on the development of a new method for 3-dimensional and 4-dimensional dosimetry using micro silica bead TLDs to be applied first on a phantom study and then on cancer patients. This addresses the need for using suitable dosimeters to accurately measure radiation dose in small fields with steep dose gradient around the brachytherapy sources to accurately determine the radiation dose distribution in the tumour and also in the organs at risk. This will offer the opportunity of an adaptive radiotherapy.