to Table I. Estimated Dose of Whole Radiation subject No. Ist Day T- 1 | TT. 20) T-3 T-5 ° T-6 t-7 | K-77 K-8 K 9 K-10 K-l} K-12 K-13. 240~290R 150~500R: 2040 b90K44U 150~ 200 BHD SLU CHO ELD) 400430 — bHO~60 130N180 7) 200~250 9 310S300 920370 190~220 | 310~310 130~180 200~250 lw~i90 230~ 280 1204170 190~240 1OS190 20S 270 [8O~230 300~350 230~ 230 | 220~270 31V~ 300, 10~190 |) 120s 170 1WO~150 34U~ 390 380~430 550~600 130~ 280 0s 220 | 10S 220 * 370~ $20 250~300 K if. 420s300 K-15 HUS19O—K-16 Total | q49~190 ) 220.270 f-B > K- 1; K-25 K-53 | K-40) K-35 K-6 + Body Gamma | 120~170 5910~ 390 210~ 260 1Y0~ 210 * 7 3 put the fall-out material close to his bed. Vhereforc, about lOO R should be added in total. "Ba contributed 4-20 9 of radioactivity at that time. The radivactivity decreased extremely rapidly, e.g. at about 6 months after the detonation, the activity in the urine was barely detectable. After 8 vears, the levels of '? Cs in urine, 2fhrs. were the same to that of nurmal 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 siunificant difference was found between the curves of the three irradiated persons and the curve of the control. B. Clinical Observations 1. Symptoms and Signs 45 No. 100 23 20 75 15 50h ~ Leo 10} ' 25 og oL 0 heodache fever more than 38°C —— u = 73 fotigue ~ ws === took Zar mre SOF 20k ot oy tsp | I 10h 25h gt ol ‘ “ “ ‘ \_ anerexd Seen ~ nausea \. ond . ~ vomiting 6 “rN ~ --7 SS ene ws diarrhoea — ‘ 100 Ee 75 50K 23 shin lesions 20 - Vir lor ask gL. / / =, v7 Teplaten \ epics conjunetivits 7 haemorrhege fp ou 0 Dote --_———-—~, “ en TE a a” r 1-5 6-10 FI-15 16-2021-2627-1 “salle L 2-6 March Fig. 1. 1 Ss 7-13 12-32 Apel Symptons and Signs 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. I. The diseases occurred between 1955 and 1963 are listed in the following. T- 3 eczema (1957-1960), pneumonia (1963) K- + erosion of r. external K- 8 petigo (1963) r. pulmonary phthisis (1955)* ear (1962), im- 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 difficult. 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.