著者
KEIYA FUJIMORI HYO KYOZUKA SHUN YASUDA AYA GOTO SEIJI YASUMURA MISAO OTA AKIRA OHTSURU YASUHISA NOMURA KENICHI HATA KOUTA SUZUKI AKIHITO NAKAI MIEKO SATO SHIRO MATSUI KYOKO NAKANO MASAFUMI ABE FOR THE PREGNANCY AND BIRTH SURVEY GROUP OF THE FUKUSHIMA HEALTH MANAGEMENT SURVEY
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
(Released:2014-07-15)
参考文献数
29
被引用文献数
8 or 0

Background: On 11 March 2011, the Great East Japan Earthquake followed by a powerful tsunami hit the Pacific Coast of Northeast Japan and damaged Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant, causing a radiation hazard in Fukushima Prefecture. The objective of this report is to describe some results of a questionnaire-based pregnancy and birth survey conducted by the Radiation Medical Science Center for the Fukushima Health Management Survey.Materials and Methods: Questionnaires were sent to women who received maternal and child health handbooks from municipal officers in Fukushima Prefecture between 1 August 2010 and 31 July 2011, with the aim of reaching those who were pregnant at the time of the disaster. Mailing began 18 January 2012. Data were analyzed separately for six geographic areas in Fukushima Prefecture.Results: The total number of women meeting survey criteria was 15,972. The number of responses received to date is 9,298 (58.2%). Data from 8602 respondents were analyzed after excluding 634 invalid responses and 5 induced and 57 spontaneous abortions (less than 22 gestational weeks). The incidences of stillbirth (over 22 completed gestational weeks), preterm birth, low birth weight and congenital anomalies were 0.25%, 4.4%, 8.7% and 2.72%, respectively. These incidences are similar to recent averages elsewhere in Japan.Conclusion: Considering the pregnancy and birth survey data in aggregate, our disaster seemed to provoke no significant adverse outcomes over the whole of Fukushima prefecture. But post-disaster prenatal care and support intended for patients’ safety and security should be coupled with ongoing surveillance and rigorous data analysis.
著者
KEIYA FUJIMORI HYO KYOZUKA SHUN YASUDA AYA GOTO SEIJI YASUMURA MISAO OTA AKIRA OHTSURU YASUHISA NOMURA KENICHI HATA KOUTA SUZUKI AKIHITO NAKAI MIEKO SATO SHIRO MATSUI KYOKO NAKANO MASAFUMI ABE FOR THE PREGNANCY AND BIRTH SURVEY GROUP OF THE FUKUSHIMA HEALTH MANAGEMENT SURVEY
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.60, no.1, pp.75-81, 2014 (Released:2014-08-08)
参考文献数
29
被引用文献数
8 or 0

Background: On 11 March 2011, the Great East Japan Earthquake followed by a powerful tsunami hit the Pacific Coast of Northeast Japan and damaged Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant, causing a radiation hazard in Fukushima Prefecture. The objective of this report is to describe some results of a questionnaire-based pregnancy and birth survey conducted by the Radiation Medical Science Center for the Fukushima Health Management Survey.Materials and Methods: Questionnaires were sent to women who received maternal and child health handbooks from municipal officers in Fukushima Prefecture between 1 August 2010 and 31 July 2011, with the aim of reaching those who were pregnant at the time of the disaster. Mailing began 18 January 2012. Data were analyzed separately for six geographic areas in Fukushima Prefecture.Results: The total number of women meeting survey criteria was 15,972. The number of responses received to date is 9,298 (58.2%). Data from 8602 respondents were analyzed after excluding 634 invalid responses and 5 induced and 57 spontaneous abortions (less than 22 gestational weeks). The incidences of stillbirth (over 22 completed gestational weeks), preterm birth, low birth weight and congenital anomalies were 0.25%, 4.4%, 8.7% and 2.72%, respectively. These incidences are similar to recent averages elsewhere in Japan.Conclusion: Considering the pregnancy and birth survey data in aggregate, our disaster seemed to provoke no significant adverse outcomes over the whole of Fukushima prefecture. But post-disaster prenatal care and support intended for patients’ safety and security should be coupled with ongoing surveillance and rigorous data analysis.
著者
HIROKI SHIMURA SHINICHI SUZUKI TOSHIHIKO FUKUSHIMA SANAE MIDORIKAWA SATORU SUZUKI NAOMI HAYASHIDA MISA IMAIZUMI NORIYUKI OKUBO YASUSHI ASARI TAKESHI NIGAWARA FUMIHIKO FURUYA KAZUHIKO KOTANI SHIGEYUKI NAKAJI AKIRA OTSURU TAKASHI AKAMIZU MASAFUMI KITAOKA NOBORU TAKAMURA MASAFUMI ABE HITOSHI OHTO NOBUYUKI TANIGUCHI SHUNICHI YAMASHITA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
(Released:2014-12-20)
参考文献数
33

Contents1. Introduction2. Thyroid ultrasound examination in Fukushima3. Thyroid ultrasound findings in children in three Japanese prefectures4. Prevalence of thyroid nodular lesions in children and adolescents 4.1 Thyroid cyst 4.2 Thyroid nodule 4.3 Thyroid cancer5. SummaryConflict of interestReference
著者
TOMOTAKA SOBUE
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.57, no.2, pp.90-92, 2012 (Released:2012-02-22)
参考文献数
2
被引用文献数
2 or 0

When evaluating cancer risk of low-dose radiation, it is difficult to distinguish the actual effect from that of chance, bias, and confounding as they become relatively large. This is why the relation between radiation doses of less than 100 mSv and cancer risk is considered unknown. Based on data of atomic bomb survivors in Hiroshima and Nagasaki, the cancer risk at 100 mSv is calculated at 1.05 times. On the other hand, the risk ratio for the relation between passive smoking and lung cancer is estimated at approximately 1.3 and judging the actual effects faced difficulties. It is almost impossible for epidemiology research alone to show that the risk ratio of 1.05 is the actual effects of radiation. The ICRP estimation, “ exposure to 100 mSv increases cancer risk by 0.5%” , has been frequently cited, however, it is not a simple excess lifetime risk of death. It will be more appropriate to indicate a value with clear definition to people in general, such as excess lifetime risk of death or excess lifetime risk of morbidity rather than the value obtained from such complicated process. Radiation epidemiology equally uses ratio and difference to indicate degrees of risk increase. Difference largely changes depending on effects of background factors whereas ratio is often relatively stable. Therefore the use of ratio would be more appropriate when comparing other cancer risk factors.
著者
MAKOTO MIYAZAKI AKIRA OHTSURU TETSUO ISHIKAWA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
(Released:2014-07-15)
参考文献数
15
被引用文献数
3 or 0

A large amount of radioactive cesium was released by the Fukushima Daiichi Nuclear Power Plant accident following the Great East Japan Earthquake. Due to the increasing concerns about internal exposure, more than 50 whole-body counters (WBCs) have been installed at various locations in Fukushima Prefecture. A study on around 10,000 subjects in the early stage after the accident revealed that very few received a committed effective dose of more than 0.3 mSv for subjects (age >13 years old). Another study on WBC results for one hospital showed that the ratio of cesium-positive was 1.0% among all the subjects. Assuming a constant daily intake, the detection limit of 300 Bq/body for a typical WBC corresponds to an effective dose of 21 μSv/y even for a subject of age up to 10. It was also seen out that the subjects with a significant amount of body cesium are likely to regularly eat wild products, which they harvested or caught themselves without testing for radioactive cesium. These study findings suggested that the internal exposure for most of the residents was controlled at a very low level. Future tasks regarding WBC measurements are how to personally explain the WBC results to each subject and how to disclose the statistically processed WBC data to the general public.
著者
YUKIHIKO KAWASAKI MITSUAKI HOSOYA SEIJI YASUMURA TETSUYA OHIRA HIROAKI SATOH HITOSHI SUZUKI AKIRA SAKAI AKIRA OHTSURU ATSUSHI TAKAHASHI KOTARO OZASA GEN KOBASHI KENJI KAMIYA SHUNICHI YAMASHITA MASAFUMI ABE THE FUKUSHIMA HEALTH MANAGEMENT SURVEY GROUP
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.60, no.2, pp.159-169, 2014 (Released:2015-02-26)
参考文献数
8
被引用文献数
3 or 0

Aim: To assist in the long-term health management of residents and evaluate health impacts after the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant accident in Fukushima Prefecture, the Fukushima prefectural government decided to conduct the Fukushima Health Management Survey. This report describes the results for residents aged 16 years or older who received the health check examinations and evaluates the data obtained from 2011 and 2012.Methods: The target group consisted of residents aged 16 years or older who had lived in the evacuation zone. The health check examinations were performed on receipt of an application for a health check examination from any of the residents. The examinations, including measurements of height, weight, abdominal circumference/body mass index (BMI), blood pressure, biochemical laboratory findings, and peripheral blood findings, were performed as required.Results: 1) A total of 56,399 (30.9%) and 47,009 (25.4%) residents aged 16 years or older received health checks in 2011 and 2012, respectively. 2) In both years, a number of male and female residents in the 16-39 year age group were found to suffer obesity, hyperlipidemia, hyperuricemia, or liver dysfunction, and the prevalence of obesity and hyperlipidemia among residents increased with age. Furthermore, the proportion of residents with hypertension, glucose metabolic abnormalities or renal dysfunction was higher in those aged 40 years or older. 3) The frequencies of obesity, hypertension and hyperlipidemia among residents in 2012 were lower than those in 2011. However, the prevalence of liver dysfunction, hyperuricemia, glucose metabolic abnormalities and renal dysfunction among residents was higher in 2012 than in 2011.Conclusions: These results suggested the number of residents who had lived in the evacuation zone with obesity, hyperlipidemia, hyperuricemia, liver dysfunction, hypertension, glucose metabolic abnormalities, or renal dysfunction increased with age in all age groups. Therefore, we think that it is necessary to continue with health check examinations for these residents in order to ameliorate lifestyle-related disease.
著者
NOBORU TAKAMURA SHUNICHI YAMASHITA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.57, no.2, pp.81-85, 2012 (Released:2012-02-22)
参考文献数
9
被引用文献数
4 or 0

The Chernobyl disaster on April 26th, 1986, led to the emission of radioactive substances such as iodine-131 and radioactive cesium. As the Soviet Union did not control food distribution and intake, residents were exposed to high levels of internal radiation, leading to the internal radiation exposure of the thyroid gland by iodine 131. As a result, the number of people who had thyroid cancer increased drastically among those who had been under 15 years old at the time of the accident. The age predilection is about to move to 25 or older. However, there has been no scientific evidence of impacts for solid tumor other than thyroid cancer, leukemia, benign diseases, or inheritance including unborn babies. On the other hand, the accident was thought to have caused social unrest and mental damage which had far more impact than that caused by radiation exposure.In this paper, we would like to summarize the impacts on the health of the people in Chernobyl compared to those caused by the accident at the Fukushima Daiichi Nuclear Power Plant.
著者
HIROMI YOSHIDA-KOMIYA AYA GOTO SEIJI YASUMURA KEIYA FUJIMORI MASAFUMI ABE FOR THE PREGNANCY AND BIRTH SURVEY GROUP OF THE FUKUSHIMA HEALTH MANAGEMENT SURVEY
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.61, no.1, pp.66-71, 2015 (Released:2015-07-08)
参考文献数
22

Background: The Fukushima Pregnancy and Birth Survey was launched to monitor pregnant mothers’ health after the Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Plant (NPP) accident. Several lines of investigations have indicated that a disaster impacts maternal mental health with childbirth. However, there is no research regarding mental health of mothers with fetal loss after a disaster. In this report, we focus on those women immediately after the Great East Japan Earthquake and Fukushima NPP accident and discuss their support needs.Materials and Methods: Data regarding 61 miscarriages, 5 abortions, and 22 stillbirths were analyzed among the women who were pregnant at the time of the accident in the present study. We used a two-item case-finding instrument for depression screening, and compared the childbirth group with the fetal loss groups. We also analyzed mothers’ opinions written as free-form text.Results: Among the three fetal loss groups, the proportion of positive depression screens was significantly higher in the miscarriage and stillbirth group than in the childbirth group. Mothers’ opinions were grouped into six categories, with pregnancy-related items being most common, especially in the miscarriage and stillbirth groups.Conclusion: A higher proportion of Fukushima mothers with fetal loss, especially those with miscarriage and stillbirth, had depressive symptoms compared to those who experienced childbirth. Health care providers need to pay close attention to this vulnerable group and respond to their concerns regarding the effects on their fertility.
著者
KENNETH E. NOLLET
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.57, no.2, pp.86-89, 2012 (Released:2012-02-22)
参考文献数
13
被引用文献数
3 or 0

A magnitude 9.0 earthquake and tsunami originating off the east coast of Japan triggered the explosive release of radioactive isotopes from one of four nuclear power plants in the affected area. This event has been compared with the 1986 nuclear accident at Chernobyl, the 1945 atomic bombing of Hiroshima and Nagasaki, and the intervening era of atmospheric nuclear weapons testing. The credibility of any comparison depends on the source, for which reason various specialists were invited to address an audience of media, healthcare, and disaster response professionals on July 18, 2011 in Fukushima City, Fukushima Prefecture. This article is based on a presentation given July 18, and interprets the Fukushima nuclear crisis from the perspective of an American doctor who grew up downwind of an atomic bomb test site, and who now works at Fukushima Medical University.
著者
NAOYA SEKIYA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.57, no.2, pp.93-99, 2012 (Released:2012-02-22)
参考文献数
15
被引用文献数
4 or 3
著者
HIROKI SHIMURA SHINICHI SUZUKI TOSHIHIKO FUKUSHIMA SANAE MIDORIKAWA SATORU SUZUKI NAOMI HAYASHIDA MISA IMAIZUMI NORIYUKI OKUBO YASUSHI ASARI TAKESHI NIGAWARA FUMIHIKO FURUYA KAZUHIKO KOTANI SHIGEYUKI NAKAJI AKIRA OTSURU TAKASHI AKAMIZU MASAFUMI KITAOKA NOBORU TAKAMURA MASAFUMI ABE HITOSHI OHTO NOBUYUKI TANIGUCHI SHUNICHI YAMASHITA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.60, no.2, pp.196-202, 2014 (Released:2015-02-26)
参考文献数
33

Contents1. Introduction2. Thyroid ultrasound examination in Fukushima3. Thyroid ultrasound findings in children in three Japanese prefectures4. Prevalence of thyroid nodular lesions in children and adolescents 4.1 Thyroid cyst 4.2 Thyroid nodule 4.3 Thyroid cancer5. SummaryConflict of interestReference
著者
Yasutaka Omori Hiroaki Wakamatsu Atsuyuki Sorimachi Tetsuo Ishikawa
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.62, no.1, pp.1-17, 2016 (Released:2016-06-08)
参考文献数
49
被引用文献数
1 or 0

This study was conducted on the Fukushima Medical University (FMU) premises (in Fukushima City, Fukushima Prefecture) about four years after the Fukushima Daiichi Nuclear Power Plant accident. Its objectives were (1) to create a map of the ambient gamma dose rate (air-kerma rate) distribution, (2) to evaluate the air-kerma rate originating from natural radionuclides, and (3) to investigate the effects of snow cover on changes in the air-kerma rate. This man-borne survey revealed that the air-kerma rate varies widely, ranging from 0.038 μGy h-1 to 0.520 μGy h-1, and is higher on grass than on the other investigated surface types, such as soil, asphalt, and bricks. In this area, the mean air-kerma rate from natural radiation was evaluated to be 0.03 ± 0.01 μGy h-1, which is close to 0.04 μGy h-1, which was measured in central Fukushima City by a local authority.Furthermore, snowfall was found to reduce the air-kerma rate by 5%-30%. This reduction was attributed to attenuation of the primary radiation while passing through the snow cover, and the measured contribution of scattered radiation to the air-kerma rate reduction was small. The reduction rate was found to depend on the initial snow depth but to maintain a similar value for a couple of days, after the snow had partially melted and its depth had decreased. Finally, analysis of the daily dose due to external exposure received on the FMU premises revealed that no further health effects due to chronic radiation exposure at this site are to be expected.
著者
HIROMI YOSHIDA-KOMIYA AYA GOTO SEIJI YASUMURA KEIYA FUJIMORI MASAFUMI ABE FOR THE PREGNANCY AND BIRTH SURVEY GROUP OF THE FUKUSHIMA HEALTH MANAGEMENT SURVEY
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
(Released:2015-06-11)
参考文献数
22

Background: The Fukushima Pregnancy and Birth Survey was launched to monitor pregnant mothers’ health after the Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Plant (NPP) accident. Several lines of investigations have indicated that a disaster impacts maternal mental health with childbirth. However, there is no research regarding mental health of mothers with fetal loss after a disaster. In this report, we focus on those women immediately after the Great East Japan Earthquake and Fukushima NPP accident and discuss their support needs.Materials and Methods: Data regarding 61 miscarriages, 5 abortions, and 22 stillbirths were analyzed among the women who were pregnant at the time of the accident in the present study. We used a two-item case-finding instrument for depression screening, and compared the childbirth group with the fetal loss groups. We also analyzed mothers’ opinions written as free-form text.Results: Among the three fetal loss groups, the proportion of positive depression screens was significantly higher in the miscarriage and stillbirth group than in the childbirth group. Mothers’ opinions were grouped into six categories, with pregnancy-related items being most common, especially in the miscarriage and stillbirth groups.Conclusion: A higher proportion of Fukushima mothers with fetal loss, especially those with miscarriage and stillbirth, had depressive symptoms compared to those who experienced childbirth. Health care providers need to pay close attention to this vulnerable group and respond to their concerns regarding the effects on their fertility.
著者
KENICHI OTOSHI SHINICHI KIKUCHI HIROAKI SHISHIDO SHINICHI KONNO
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
(Released:2014-10-04)
参考文献数
14

Flexor pronator muscles (FPMs) play a key role in stabilizing the elbow joint against valgus forces. However, no studies have investigated the in vivo kinematics of FPMs against these forces on the elbow. This study aimed to clarify the in vivo contribution of each FPM as a dynamic stabilizer in a clinical situation.Twelve healthy volunteers participated in this study. Verbal informed consent was obtained from all subjects. The elbow was flexed to 90 degrees, and the forearm was placed in the neutral position. Manual valgus stress was applied to the elbow joint until maximal shoulder external rotation was achieved. The width of the ulnohumeral joint space and the ulnar shift of the sublime tubercle were measured before and after isometric contraction of FPMs using ultrasonography.The horizontal distances were decreased 1.1±0.6 mm after forearm pronation, 0.6±0.5 mm after wrist palmar flexion, 0.1±0.4 mm after wrist ulnar flexion, and 0.2±0.5 mm after finger flexion. Significant changes were observed during forearm pronation, wrist palmar flexion, and finger flexion but not during wrist ulnar flexion (p<0.05). The sublime tubercle was significantly shifted 0.5±0.1 mm medially after forearm pronation, 0.2±0.1 mm medially after wrist palmar flexion, and 0.1±0.1 mm laterally after wrist ulnar flexion and finger flexion (p<0.05). The FPMs, especially the pronator teres and the flexor carpi radialis, function as dynamic stabilizers against elbow valgus stress. The results of this study may be useful in developing injury prevention and rehabilitation strategies for throwing injuries of the elbow.
著者
SEIJI YASUMURA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.60, no.2, pp.192-195, 2014 (Released:2015-02-26)
参考文献数
8
被引用文献数
5 or 0

The Great East Japan Earthquake hit Fukushima Prefecture on March 11, 2011, just over 3 years ago and it continues to affect our lives. In Fukushima, many people are confirmed dead or still missing due to the earthquake and/or tsunami. Additional “disaster-related deaths” have been attributed to the Fukushima Daiichi Nuclear Power Plant (NPP) accident. Mortality among the institutionalized elderly rates after the NPP accident were exceptionally high during the first 3 months, and persisted at a lower level for 9 months, in comparison with similar periods before the accident. This study demonstrates the great impact of evacuation on mortality of institutionalized elderly, excluding inpatients. We need to pay special attention to evacuation of the elderly, regardless of whether voluntary or forced.
著者
黒田 直
出版者
福島医学会
雑誌
福島医学雑誌 (ISSN:00162582)
巻号頁・発行日
vol.9, no.4, pp.485-493, 1959-08
著者
HIROSHI WATANABE MAKIKO YASHIRO TOMOYUKI ASANO SHUZO SATO ATSUSHI TAKAHASHI KYOKO KATAKURA HIROKO KOBAYASHI HIROMASA OHIRA
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
(Released:2015-05-19)
参考文献数
17

Stressful life situation can trigger the onset and flare-ups of Behçet’s disease (BD). In addition, the association of systemic sclerosis (SSc) and BD is rare. In this study, we report a patient who had Sjögren’s syndrome as a primary disease and subsequently developed SSc and BD after an earthquake disaster and the death of her father.
著者
RYO ATSUUMI YOSHIHIKO ENDO AKIHIKO SUZUKI YASUMITU KANNOTOU MASAHIRO NAKADA REIKO YABUUCHI
出版者
福島医学会
雑誌
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)
巻号頁・発行日
vol.60, no.1, pp.101-105, 2014 (Released:2014-08-08)
参考文献数
6
被引用文献数
1 or 0

A 9.0 magnitude (M) earthquake with an epicenter off the Sanriku coast occurred at 14: 46 on March 11, 2011. TEPCO Fukushima Daiichi Nuclear Power Plant (F-1 NPP) was struck by the earthquake and its resulting tsunami. Consequently a critical nuclear disaster developed, as a large quantity of radioactive materials was released due to a hydrogen blast. On March 16th, 2011, radioiodine and radioactive cesium were detected at levels of 177 Bq/kg and 58 Bq/kg, respectively, in tap water in Fukushima city (about 62km northwest of TEPCO F-1 NPP). On March 20th, radioiodine was detected in tap water at a level of 965 Bq/kg, which is over the value-index of restrictions on food and drink intake (radioiodine 300 Bq/kg (infant intake 100 Bq/kg)) designated by the Nuclear Safety Commission. Therefore, intake restriction measures were taken regarding drinking water. After that, although the all intake restrictions were lifted, in order to confirm the safety of tap water, an inspection system was established to monitor all tap water in the prefecture. This system has confirmed that there has been no detection of radioiodine or radioactive cesium in tap water in the prefecture since May 5th, 2011. Furthermore, radioactive strontium (89 Sr, 90Sr) and plutonium (238Pu, 239Pu+240Pu) in tap water and the raw water supply were measured. As a result, 89 Sr, 238Pu, 239Pu+240Pu were undetectable and although 90Sr was detected, its committed effective dose of 0.00017 mSv was much lower than the yearly 0.1 mSv of the World Health Organization guidelines for drinking water quality. In addition, the results did not show any deviations from past inspection results.