nN Table 1. Estimated Dose of Whole Body Gamma Radiation Subject No. | Ist Day | Total T-1 20~290R) 450~500R! T-3 150~ 200 T-2 2lo~200 390~440 %O~ 310 (360~ 410) T-5 400~ 430 | 660~690 | T- 8 310~360 T-6 T-7 150-~ 180 : 200~ 250 | 140~190 | 220~270 , K- 1 K-2 K-3 K-4 K- 5 K- 6 K-7 190~220 310~310 | 130~180 ; 200~250 | » 1O~I90 230~280 | 1202170 | 1v~240 | 140~190 220~270 180~ 230 | 300~330 | 230~240 340~590 | K- 8 | 220~270 K-9 K-10 K-1L K-12, K-13 K-1+ K-15 K-16 520~ 570 380~430 | | 310~360 , 530~6u0 | 120~170 1704220 | | 100~150 | 170~220 | 250~300 | 370~ 420 | 420~300 | 510~3590 | | 10~190 ° 210~260 | 120~170 | [90~240 Thercfure, about 100R should be added in total. ‘Ba contributed 4-202 of radioactivity at that time. The radioactivity decreased extremely rapidly, e.g. at about 6 months after the detonation, the activity in the urine was barely deAfter 8$ years, the levels of ‘Cs in urine/2+hrs. were the same to that of normal persons. Radiochemical analysis of several organs from the fatal case, which died on 23 September 1954, showed that, comparing with the controls, radioactivity of these organs was clearly higher, although it was not extremely high.'” Whole body counting was performed on three persons 8§ years after the initial exposure. No sixnificant difference was found between the curves of the three irradiated persons and the curve of the control. B. 1dr Clinical Observations 1. Symptoms and Signs 23+ ‘ YOO noused ‘and 5 Qo “A vomiting —=. 23 20r | M0~190 | 230~2860 : * T-3 put the fall-out material close to his bed. tectable. fever more ish 5 10 25 ol . Sr 0 4 4 JZ _neemorrhoge Dote en reat 1-5 6-10 HI-15 16-2021-2627-1 March Fig, 1. \ eet ee Fae _ os 2-6 7-H1 12-12 Agri Symptons and Sigus in the Early Stage Soon after the initial exposure most of the patients experienced anorexia, fatigue and lachrymation, etc. These symptoms and their changes are illustrated in Fig. 1. The diseases occurred between 1955 and 1963 are listed in the following. T- 3 eczema (1957-1960), pneumonia (1963) K- + erosion of r. external ear (1962), impetigo (1963) K- 8 r. pulmonary phthisis (1955)* K-10 r. exsudative pleuritis (1959)*, Furunculosis (1960) K-16 acute appendicitis (1957) 2. Skin Lesions Skin lesions occurred due to beta radiation. An estimate of the radiation dose to the skin was diflicule. Shortly after the exposure, they suffered from erythema which was followed by edema, vesicle, erosion, ulceration or necrosis. * These were diagnosed by Dr. Kumatori. The others were due to complaints of the patients.