1. Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Indonesia
2. Center for Medical Physics and Biophysics, Faculty of Mathematics and Natural Sciences, Institute for Applied Sciences, Universitas Indonesia, Indonesia
3. Radiology Unit, Universitas Indonesia Hospital, Depok, Indonesia
4. Department of Radiotherapy, Pasar Minggu Regional General Hospital, South Jakarta, Indonesia
5. Department of Imaging and Pathology, Medical Physics and Quality Assessment, Catholic University of Leuven, Leuven, Belgium