Ms Sin Sze Yarn is the Advanced Practitioner Radiation Therapist (APRT) from National Cancer Centre Singapore. She graduated Masters in Radiation Therapy from MONASH University and has been practicing since 2004, followed by specializing in Head and Neck (HN) APRT since 2012. Her international experiences include posters and oral presentation done in USA, Australia, Taiwan and Malaysia. She is the first HN APRT in Singapore that has acquired an in depth knowledge of clinical assessment and imaging in HN radiotherapy. She has succeeded in approving images for the HN ROs and she runs a toxicity assessment clinic for NPC patients. In addition, she writes HN imaging protocol for 2D and 3D imaging along with a comprehensive teaching and assessment for RTs.