Radiology General 0f3f7e9b The haematopoetic injury occurs at a dose of: A 2-7 Gy B 7-15 Gy C 40-50 Gy D > 50 Gy High-Yield Explanation Acute radiation syndrome: 2–7 Gy – Haematopoietic injury 7–15 Gy – Injury > 50 Gy – CVS / CNS