Shinzo Kimura

Laboratory of International Epidemiology Dokkyo Medical University

I March 2011, there were large amouts of radioactie material released ito the air due to the exlosio of the ukushima-Daiichi uclear ower lat of TEPCO(Tokyo Electric Power Comay) caused by the Great East Jaa Earthquake. As a result, there hae bee issues regardig the exosure leels, safety of foods, ad the temorary radioactie waste storage i the ukushima refecture ad the surroudig area.

Out of the areas that were ot istructed to eacuate, the study area, Nihomatsu city, ukushima, located 3760 kilometers away from the ukushima-Daiichi uclear ower lat, retaied oe of the highest radiatio dosage.

As of ebruary 2015, the oulatio of Nihomatsu city is 55,467 eole, which is 4,200 eole less tha before.

Tacklig issues i this area, the Nihomatsu-city radiatio rotectio adisors, icludig the author, cotiuously iestigateresidets’ iteral ad exteral radiatio exosures, coduct food isectios, ad orgaize couselig sessios with local goermet ad ublic health urses. As aeffectie tool of local emowermet, we hae made a textbookfor elemetary ad middle school studets for further uderstadig the lessos of the uclear ower lat accidet, with the local educatio board ad teachers.

Thus we reort the 5-year stes ad the rogress of dow-to-earth works based o hads-o measuremets with local residets i the Nihomatsu-city.

RADIATION EXPOSURE AND THYROID CANCER – CONSIDERING THE INFLUENCE OF THE FUKUSHIMA NUCLEAR ACCIDENT BASED ON THE EXPERIENCE OF MASS

SCREENING IN BELARUS AFTER THE CHERNOBYL DISASTER

Kazuo Shimizu

Nippon Medical School

O Aril 26, 1986, the Cherobyl Nuclear Power Plat i Ukraie (the a art of the former Soiet Uio) suffered massie exlosios ad eruted ito flames. idig reailig orth-orthwest wids, radioactie fallout cotamiated the eighborig atio of Belarus. It has ast 30 years sice this tragic atomic disaster occurred. As is widely kow, the esuig years saw a dramatic sike i rates of thyroid cacer i childre. Theuclear accidet i ukushima haeed 5 years ago has surred reewed iterest i this tragedy ad the relatioshi betwee radiatio ad thyroid cacer. Now 30 years remoed from Cherobyl, the rates of thyroid cacer amog childre hae begu to declie i Belarus; howeer, the cohort of affected childre who hae subsequetly become adults is still sufferig a icrease i thyroid cacer.

I March of 2011, the Great East Jaa Earthquake ad esuig tsuami resulted i a accidet at the ukushima Nuclear Power Plat. I light of the exeriece of Cherobyl, the questio of whether or ot radioactie cotamiatio from ukushima will imact the occurrece of thyroid cacer has gareredot oly domestic, but iteratioal attetio. Gie these circumstaces, a rogram to moitor the health of affected childre uder the age of 18 years i ukushima Prefecture has bee formulated ad begu. Uder this rogram, 380,000 idiiduals will receie regular medical examiatios for the rest of their lies.

Sice 1999, we hae articiated eery year i a oluteer caacity i the Cherobyl Medical Suort Network’s rogram of thyroid cacer screeig. O site we roide guidace to local medical workers as well as carry out edoscoic thyroid surgery, a techique that we hae deeloed i 1998. I additio, we hae coducted examiatios ad made diagoses usig a ariety of methods, such as thyroid ultrasoograhy, asiratio cytology, alitatio, ad medical iteriews. 

or this talk, I will reset some of our actiities i Belarus. Drawig o our exerieces, I will discussthe mechaisms ioled i thyroid cacer athogeesis. I will also examie the questio of whether or ot the ukushima uclear accidet will imact the occurrece of thyroid cacer as well as the most recet situatio what haeed i ukushima.

РАДИОБИЛОГИЯ, РАДИОЭКОЛОГИЯ, ДОЗИМЕТРИЯ

ОСОБЫЕ КЛЕТОЧНЫЕ ЭФФЕКТЫ И СОМАТИЧЕСКИЕ ПОСЛЕДСТВИЯ ОБЛУЧЕНИЯ В МАЛЫХ ДОЗАХ