The Medical Physics Division has several areas of research aimed at improving patient outcomes. Twenty faculty and staff are creating and refining methods for improved cancer imaging, planning and treatment. Cancer imaging techniques include computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET). Treatment planning research ranges from the extremely small radiation fields used in radiosurgery to the complex dynamic fields in helical and arc intensity modulated radiation therapy (IMRT). Treatment delivery techniques research includes external beam radiation therapy with linear accelerators containing on-board imaging systems, helical tomotherapy systems, MRI-guided radiotherapy and brachytherapy.