<prompt> The minimum dose of radiation to produce cerebral symptoms500 rads100 rads1000 rads5000 rads  <response>: 5000 rads 2588-H 15thOrganInjuryMinimum tolerance doseMaximum tolerance doseWhole or partial organField size or lengthBone marrowAplasia250450Whole Pancytopenia300004000SegmentalLiverAcute hepatitis25004000Whole Chronic hepatitis15002000Whole StripStomachPerforation, ulcer, hemorrhage45005500100 cmIntestineUlcer, perforation45005500400 cm Haemorrhage50006500100 cmBrainInfarction necrosis50006000WholeSpinal cordInfarction necrosis4500550010 cmHeartPericarditis,4500550060 Pan carditis7000800025LungAcute and chronic pneumonitis30003500100 cm 15002500WholeKidneyAcute and chronic nephrosclerosis15002000Whole strip 20002500WholeFetusDeath200400Whole 