radiosensitive

/ˌreɪdioʊˈsɛnsɪtɪv/
adjective
  1. Easily damaged or affected by radiation, especially X-rays or other forms of ionizing radiation.
    • Bone marrow is one of the most radiosensitive tissues in the human body.
    • Radiosensitive tumors often shrink quickly after radiation therapy begins.
    • Children are more radiosensitive than adults, so doctors take extra care when using X-rays on them.