National Institute of Radiological Sciences

Summary

Organization: National Institute of Radiological Sciences
Country: Japan

Top Publications

  1. ncbi Monkeys quickly learn and generalize visual categories without lateral prefrontal cortex
    Takafumi Minamimoto
    Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
    Neuron 66:501-7. 2010
  2. ncbi The radiation-induced cell-death signaling pathway is activated by concurrent use of cisplatin in sequential biopsy specimens from patients with cervical cancer
    Mayumi Iwakawa
    RadGenomics Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Japan
    Cancer Biol Ther 6:905-11. 2007
  3. ncbi Dose effect for South Serbians due to 238U in natural drinking water
    S K Sahoo
    Department of Radiation Dosimetry, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Radiat Prot Dosimetry 127:407-10. 2007
  4. ncbi Precise determination of Pu isotopes in a seawater reference material using ID-SF-ICP-MS combined with two-stage anion-exchange chromatography
    Jian Zheng
    Nakaminato Laboratory for Marine Radioecology, Environmental Radiation Effects Research Group, National Institute of Radiological Sciences, Japan
    Anal Sci 23:611-5. 2007
  5. ncbi The conserved role of Smu1 in splicing is characterized in its mammalian temperature-sensitive mutant
    Kimihiko Sugaya
    Radiation Effect Mechanisms Research Group, National Institute of Radiological Sciences, 4 9 1, Anagawa, Inage Ku, Chiba 263 8555, Japan
    J Cell Sci 119:4944-51. 2006
  6. ncbi Removal of technetium from solution by algal flagellate Euglena gracilis
    Nobuyoshi Ishii
    Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba shi, 263 8555 Japan
    J Environ Qual 35:2017-20. 2006
  7. ncbi Analysis of non-genetic risk factors for adverse skin reactions to radiotherapy among 284 breast cancer patients
    Mayumi Iwakawa
    RadGenomics Project, Frontier Research Center, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba shi, Chiba ken 263 8555, Japan
    Breast Cancer 13:300-7. 2006
  8. ncbi The extremely high 137Cs inventory in the Sulu Sea: a possible mechanism
    Masatoshi Yamada
    Nakaminato Laboratory for Marine Radioecology, Environmental Radiation Effects Research Group, National Institute of Radiological Sciences, Isozaki 3609, Hitachinaka, Ibaraki 311 1202, Japan
    J Environ Radioact 90:163-71. 2006
  9. ncbi Noise properties for three weighted Feldkamp algorithms using a 256-detecotor row CT-scanner: case study for hepatic volumetric cine imaging
    Shinichiro Mori
    Department of Medical Physics, National Institute of Radiological Sciences, Chiba 263 8555, Japan
    Eur J Radiol 59:289-94. 2006
  10. ncbi Physical evaluation of CT scan methods for radiation therapy planning: comparison of fast, slow and gating scan using the 256-detector row CT scanner
    Shinichiro Mori
    Department of Medical Physics, National Institute of Radiological Sciences, 4 9 1 Anagawa, Chiba, Japan
    Phys Med Biol 51:587-600. 2006

Scientific Experts

Detail Information

Publications62

  1. ncbi Monkeys quickly learn and generalize visual categories without lateral prefrontal cortex
    Takafumi Minamimoto
    Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
    Neuron 66:501-7. 2010
    ..These results strongly indicate that visual categorization occurs at some earlier stage of feed-forward processing, presumably in temporal cortex, without top-down information from LPFC...
  2. ncbi The radiation-induced cell-death signaling pathway is activated by concurrent use of cisplatin in sequential biopsy specimens from patients with cervical cancer
    Mayumi Iwakawa
    RadGenomics Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Japan
    Cancer Biol Ther 6:905-11. 2007
    ..To identify changes in gene expression related to the concurrent use of platinum compounds with radiotherapy, in the treatment of cervical cancer...
  3. ncbi Dose effect for South Serbians due to 238U in natural drinking water
    S K Sahoo
    Department of Radiation Dosimetry, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Radiat Prot Dosimetry 127:407-10. 2007
    ..00698 to 0.00745. These findings indicate that uranium in water was a mixture of natural and anthropogenic origin. The annual effective dose due to 238U was estimated to be in the range 9.2 x 10(-5)-2.1 x 10(-3) mSv...
  4. ncbi Precise determination of Pu isotopes in a seawater reference material using ID-SF-ICP-MS combined with two-stage anion-exchange chromatography
    Jian Zheng
    Nakaminato Laboratory for Marine Radioecology, Environmental Radiation Effects Research Group, National Institute of Radiological Sciences, Japan
    Anal Sci 23:611-5. 2007
    ..6%) provided by the IAEA certification report. The precise determination of Pu isotopes in this seawater reference material will be useful for the validation of analytical methods for the study of radionuclides in the marine environment...
  5. ncbi The conserved role of Smu1 in splicing is characterized in its mammalian temperature-sensitive mutant
    Kimihiko Sugaya
    Radiation Effect Mechanisms Research Group, National Institute of Radiological Sciences, 4 9 1, Anagawa, Inage Ku, Chiba 263 8555, Japan
    J Cell Sci 119:4944-51. 2006
    ..Comparison of the results of perlecan RT-PCR analysis with those of analysis of four other genes suggested that the splicing defect in the perlecan gene is unique and that it is conserved through evolution...
  6. ncbi Removal of technetium from solution by algal flagellate Euglena gracilis
    Nobuyoshi Ishii
    Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba shi, 263 8555 Japan
    J Environ Qual 35:2017-20. 2006
    ..These results suggested that intracellular uptake of (99)Tc by E. gracilis occurred. These results are the first documented example of significant removal of (99)Tc by planktonic microalgae...
  7. ncbi Analysis of non-genetic risk factors for adverse skin reactions to radiotherapy among 284 breast cancer patients
    Mayumi Iwakawa
    RadGenomics Project, Frontier Research Center, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba shi, Chiba ken 263 8555, Japan
    Breast Cancer 13:300-7. 2006
    ....
  8. ncbi The extremely high 137Cs inventory in the Sulu Sea: a possible mechanism
    Masatoshi Yamada
    Nakaminato Laboratory for Marine Radioecology, Environmental Radiation Effects Research Group, National Institute of Radiological Sciences, Isozaki 3609, Hitachinaka, Ibaraki 311 1202, Japan
    J Environ Radioact 90:163-71. 2006
    ....
  9. ncbi Noise properties for three weighted Feldkamp algorithms using a 256-detecotor row CT-scanner: case study for hepatic volumetric cine imaging
    Shinichiro Mori
    Department of Medical Physics, National Institute of Radiological Sciences, Chiba 263 8555, Japan
    Eur J Radiol 59:289-94. 2006
    ..We concluded that, considering the trade-off between image quality and temporal resolution, the NHS-FDK algorithm is useful in volumetric cine imaging for the abdomen...
  10. ncbi Physical evaluation of CT scan methods for radiation therapy planning: comparison of fast, slow and gating scan using the 256-detector row CT scanner
    Shinichiro Mori
    Department of Medical Physics, National Institute of Radiological Sciences, 4 9 1 Anagawa, Chiba, Japan
    Phys Med Biol 51:587-600. 2006
    ..FSCT-ave is a satisfactory radiotherapy planning alternative if RGCT is not available...
  11. ncbi Radiosensitivity of hypoxic and proliferating clonogen in a human lung cancer grown in nude mice
    Tadaaki Miyamoto
    Research Center Hospital for Charged Particle Therapy, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba shi, Chiba 263 8555, Japan
    Oncol Rep 14:1421-8. 2005
    ....
  12. ncbi Development of high-radiation-sensitive polymer gel for magnetic resonance imaging in three-dimensional dosimetry
    Shinichiro Mori
    Department of Medical Physics, National Institute of Radiological Sciences, 4 9 1, Anagawa, Chiba, Japan, 263 8555
    Magn Reson Imaging 23:691-4. 2005
    ..Since the present gel has higher sensitivity and it is synthesized more easily at lower cost than conventional polymer gels, we expect to see improved three-dimensional (3D) dosimetry using it...
  13. ncbi Distribution coefficient of selenium in Japanese agricultural soils
    Yasuo Nakamaru
    Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, Anagawa 4 9 1, Inage Ku, Chiba shi 263 8555, Japan
    Chemosphere 58:1347-54. 2005
    ..The high values of Kd seemed to be caused mainly by the adsorption of Se onto active-Al in Japanese soils...
  14. ncbi Strain dependent differences in a histological study of CD44 and collagen fibers with an expression analysis of inflammatory response-related genes in irradiated murine lung
    Mayumi Iwakawa
    RadGenomics Project, Frontier Research Center, National Institute of Radiological Sciences, Chiba shi, Japan
    J Radiat Res 45:423-33. 2004
    ..The expression analysis showed that the several genes are potentially involved in interstrain differences in inflammatory response causing radiation-induced lung fibrosis...
  15. ncbi Optimization for fast-scanning irradiation in particle therapy
    Taku Inaniwa
    Medical Physics Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Med Phys 34:3302-11. 2007
    ..A typical treatment time with the proposed method is about 15 s for the irradiation of a spherical target with an 80 mm diameter at 3 GyE...
  16. ncbi Evaluating glycogen signal contamination in muscle by (13)C MRS of the liver
    Moyoko Tomiyasu
    Department of Biophysics, Molecular Imaging Center, National Institute of Radiological Sciences, Chiba 263 8555, Japan
    Magn Reson Imaging 26:572-6. 2008
    ....
  17. ncbi Relationship between baseline cerebral blood flow and vascular responses to changes in PaCO2 measured by positron emission tomography in humans: implication of inter-individual variations of cerebral vascular tone
    H Ito
    Department of Radiology and Nuclear Medicine, Akita Research Institute of Brain and Blood Vessels, Akita, Japan
    Acta Physiol (Oxf) 193:325-30. 2008
    ..In the present study, the relationship between CBF and cerebral vascular tone to inter-individual variation at rest condition was investigated using positron emission tomography (PET)...
  18. ncbi Ultrafast LC method for purification and metabolite analysis of PET probes
    Ryuji Nakao
    Molecular Imaging Center, National Institute of Radiological Sciences, Chiba, Japan
    Nucl Med Biol 37:67-72. 2010
    ....
  19. ncbi Low-cost metaphase finder system
    Akira Furukawa
    National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Health Phys 98:269-75. 2010
    ..The scanning speed was 14.5 to 18.1 min cm2. The system was slower than several commercial metaphase finders, but there were few false positives. This system is economical and satisfactory for practical use...
  20. ncbi The effect of long-running severe selenium-deficiency on the amount of iron and zinc in the organs of rats
    Ken Ichiro Matsumoto
    Department of Physical Chemistry, Showa Pharmaceutical University, Tokyo, Japan
    Molecules 14:4440-53. 2009
    ..Fluctuations of Fe and Zn in the liver of Se-deficient rats were observed. The amount of redox-relating minerals, such as Fe and Zn, in SeD rat organs is changeable depending on the age...
  21. ncbi Low-dose radiation attenuates chemical mutagenesis in vivo
    Shizuko Kakinuma
    Experimental Biology for Children s Health Research Group, National Institute of Radiological Sciences, Chiba, Japan
    J Radiat Res (Tokyo) 50:401-5. 2009
    ....
  22. ncbi Responses of selected neutron monitors to cosmic radiation at aviation altitudes
    Hiroshi Yasuda
    Environmental Radiation Exposure Research Group, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Health Phys 96:655-60. 2009
    ..These results indicate that careful attention must be paid to the dosimetric properties of a detector employed for verification of cosmic neutron dose...
  23. ncbi Development of a multi-layer ionization chamber for heavy-ion radiotherapy
    Kaori Yajima
    Toho University Graduate School of Science, 2 2 1, Miyama, Funabashi, Chiba 274 8510, Japan
    Phys Med Biol 54:N107-14. 2009
    ..For carbon-ion beams, the PMMA type MLIC has the capability to measure depth dose distributions in the water phantom with less than 2% error, including the fragment tail region...
  24. ncbi Preliminary study on potential of the jPET-D4 human brain scanner for small animal imaging
    Taiga Yamaya
    Molecular Imaging Center, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Ann Nucl Med 23:183-90. 2009
    ..In this article, we investigate the jPET-D4's potential for small animal imaging by comparing it with the microPET Focus220, a state-of-the-art PET scanner dedicated to small animals...
  25. ncbi Optimal scan time of oxygen-15-labeled gas inhalation autoradiographic method for measurement of cerebral oxygen extraction fraction and cerebral oxygen metabolic rate
    Miho Shidahara
    Molecular Imaging Center, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba, 263 8555, Japan
    Ann Nucl Med 22:667-75. 2008
    ..Our objective in this study was to optimize the scan time for 15O2 gas study for accurate estimation of OEF and CMRO2...
  26. ncbi Roles of the thalamic CM-PF complex-Basal ganglia circuit in externally driven rebias of action
    Takafumi Minamimoto
    Department of Physiology, Kyoto Prefectural University of Medicine, Kyoto 602 8566, Japan
    Brain Res Bull 78:75-9. 2009
    ..This model provides a framework for how the thalamic CM-PF complex and the basal ganglia function together in general for unexpected situations...
  27. ncbi Metabolism and the paradoxical effects of arsenic: carcinogenesis and anticancer
    Xing Cui
    Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Chiba 263 8555, Japan
    Curr Med Chem 15:2293-304. 2008
    ..We also summarize the clinical use of arsenic trioxide (As2O3) to date and discuss new therapeutic strategies such as concurrent arsenic-radiation therapy to achieve local tumor control and enhance the radiosensitivity of solid tumors...
  28. ncbi Rapid and simple method for quantitative evaluation of neurocytotoxic effects of radiation on developing medaka brain
    Takako Yasuda
    Environmental Radiation Effects Research Group, Research Center for Radiation Protection, National Institute of Radiological Sciences, Chiba, Japan
    J Radiat Res (Tokyo) 49:533-40. 2008
    ..The results show that medaka embryos are useful for quantitative evaluation of developmental neurocytotoxic effects of radiation...
  29. ncbi Multimodal silica-shelled quantum dots: direct intracellular delivery, photosensitization, toxic, and microcirculation effects
    Rumiana Bakalova
    Molecular Imaging Center, National Institute of Radiological Sciences, 4 9 1 Anagawa, Chiba 263 8555, Japan
    Bioconjug Chem 19:1135-42. 2008
    ..g., heart rate, blood pressure, diameter and shape of blood vessels), which makes it appropriate for tracing of blood circulation and in vivo multimodal imaging using fluorescent confocal microscopy, two-photon microscopy, and MRI...
  30. ncbi Enhanced activation in the extrastriate body area by goal-directed actions
    Hidehiko Takahashi
    Department of Molecular Neuroimaging, National Institute of Radiological Sciences, Chiba, Japan
    Psychiatry Clin Neurosci 62:214-9. 2008
    ..The aim of the present study was to investigate the role of EBA in processing goal-directed actions...
  31. ncbi Differences in pO2 peaks of a murine fibrosarcoma between carbon-ion and X-ray irradiation
    Takeshi Fukawa
    Institute of Biomedical Engineering, Keio University, Yokohama, Japan
    J Radiat Res 45:303-8. 2004
    ..It is concluded that carbon-ion irradiation reoxygenated the NFSa fibrosarcomas earlier in time and deeper in space than the X-ray irradiation did...
  32. ncbi Effect of high-level natural radiation on chromosomes of residents in southern China
    I Hayata
    National Institute of Radiological Sciences, Chiba, Japan
    Cytogenet Genome Res 104:237-9. 2004
    ..But the increase of translocations in HBRA was within the range of individual variation in the controls...
  33. ncbi Impairment of spermatogenesis in rats by methylmercury: involvement of stage- and cell- specific germ cell apoptosis
    S Homma-Takeda
    Graduate School Doctoral Program in Medical Sciences, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8575, Japan
    Toxicology 169:25-35. 2001
    ..Our results suggest that methylmercury impairs spermatogenesis by germ cell deletion via cell- and stage- specific apoptosis...
  34. ncbi A mutation in the largest (catalytic) subunit of RNA polymerase II and its relation to the arrest of the cell cycle in G(1) phase
    K Sugaya
    Genome Research Group, National Institute of Radiological Sciences, 4 9 1, Anagawa, Chiba, 263 8555, Japan
    Gene 274:77-81. 2001
    ..Aligning the amino acid sequences from various species reveals that ala(315) is highly conserved in eukaryotes...
  35. ncbi Design of synchrotron light source and its beamline dedicated to dual-energy x-ray computed tomography
    M Torikoshi
    National Institute of Radiological Sciences, Anagawa 4 9 1, Inage, Chiba 263 8555, Japan
    J Biomed Opt 6:371-7. 2001
    A synchrotron light source dedicated to medical applications has been designed at National Institute of Radiological Sciences. The storage ring, with circumference of 80 m, is designed for acceleration of 2...
  36. ncbi Glow-peak stability in 6LiF:Mg,Ti (TLD-600) exposed to a Fe-ion beam
    H Yasuda
    Int Space Radiation Laboratory, National Institute of Radiological Sciences 4 9 1 Anagawa, Inage ku Chiba 263 8555, Japan
    J Radiat Res 42:69-78. 2001
    ..These facts suggest that peaks 3-5 in TLD-600 comprised both stable and unstable luminescent centers, and that the latter part would be easily depleted in highly dense ionization...
  37. ncbi Quantitative comparison of two types of planar lipid bilayers--folded and painted--with respect to fusion with vesicles
    K Anzai
    Bioregulation Research Group, National Institute of Radiological Sciences, 4 9 1 Anagawa, Chiba 263 8555, Inage, Japan
    J Biochem Biophys Methods 48:283-91. 2001
    ..For the study of single channel behavior, the painted bilayer could have an advantage because simply stopping the stirring prevents excess fusion...
  38. ncbi Tumor uptake of radioiodinated anti-human pulmonary surfactant-associated protein monoclonal antibody PE10 in nude mice bearing human pulmonary adenocarcinoma in combination with an unlabeled preload
    N Watanabe
    Division of Advanced Technology for Medical Imaging, National Institute of Radiological Sciences, Chiba, Japan
    Nucl Med Biol 27:723-31. 2000
    ....
  39. ncbi Determination of the spatial distribution of major elements in the rat brain with X-ray fluorescence analysis
    S Takahashi
    Environmental and Toxicological Research Group, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, 263 8555, Chiba
    J Neurosci Methods 100:53-62. 2000
    ....
  40. ncbi Phosphatase inhibitors and premature chromosome condensation in human peripheral lymphocytes at different cell-cycle phases
    R Kanda
    Division of Radiobiology and Biodosimetry, National Institute of Radiological Sciences, Chiba, Japan
    Somat Cell Mol Genet 25:1-8. 1999
    ..It was found that calcium ionophore A23187 increased frequencies of G0-PCC induced by calyculin A, although a further refinement is necessary to obtain a suitable morphology of G0-PCC for cytogenetic studies...
  41. ncbi Determination of major and trace elements in the liver of Wistar rats by inductively coupled plasma-atomic emission spectrometry and mass spectrometry
    S Takahashi
    Environmental and Toxicological Research Group, National Institute of Radiological Sciences, Chiba, Japan
    Lab Anim 34:97-105. 2000
    ....
  42. ncbi Localization of indium-111 in human malignant tumor xenografts and control by chelators
    N Watanabe
    Division of Advanced Technology for Medical Imaging, National Institute of Radiological Sciences, Chiba, Japan
    Nucl Med Biol 26:853-8. 1999
    ..Pre- and postadministration of CaNa3DTPA could remove (111)In-nonspecific localization in tumors when (111)In is released from the radiolabeled agents...
  43. ncbi Genetic and epigenetic control of the proliferation and differentiation of mouse epidermal melanocytes in culture
    T Hirobe
    Division of Biology and Oncology, National Institute of Radiological Sciences, Chiba, Japan
    Pigment Cell Res 12:147-63. 1999
    ....
  44. ncbi Radiation-induced tumorigenesis of mammary glands in pituitary transplanted rats ovariectomized before onset of estrous cycle
    H Inano
    The First Research Group, National Institute of Radiological Sciences, Chiba shi, Japan
    Cancer Lett 138:93-100. 1999
    ....
  45. ncbi Muscarinic receptor occupancy by biperiden in living human brain
    Y Sudo
    Division of Advanced Technology for Medical Imaging, National Institute of Radiological Sciences, Chiba, Japan
    Life Sci 64:PL99-104. 1999
    ..mAchR occupancy was 10-45% in the frontal cortex three hours after the oral administration of 4 mg of biperiden. The occupancy correlated with the plasma concentration of biperiden in a curvilinear manner...
  46. ncbi Endothelins are involved in regulating the proliferation and differentiation of mouse epidermal melanocytes in serum-free primary culture
    T Hirobe
    Division of Biology and Oncology, National Institute of Radiological Sciences, Anagawa, Chiba, Japan
    J Investig Dermatol Symp Proc 6:25-31. 2001
    ..These results suggest that ET-1, -2, and -3 are one member of the keratinocyte-derived factors that are involved in regulating the proliferation and differentiation of mouse epidermal melanocytes in primary culture...
  47. ncbi Bioassay for neutron-dose estimations of three patients in the JCO criticality accident in Tokai-mura by measuring beta-ray emitters
    H Takeda
    Environmental and Toxicological Sciences Research Group, National Institute of Radiological Sciences, Chiba, Japan
    J Radiat Res (Tokyo) 42:S129-35. 2001
    ....
  48. ncbi Synthesis, in vitro and in vivo pharmacology of a C-11 labeled analog of CP-101,606, (+/-)threo-1-(4-hydroxyphenyl)-2-[4-hydroxy-4-(p-[11C]methoxyphenyl)piperidino]-1-propanol, as a PET tracer for NR2B subunit-containing NMDA receptors
    Terushi Haradahira
    Department of Medical Imaging, National Institute of Radiological Sciences, Chiba 263 8555, Japan
    Nucl Med Biol 29:517-25. 2002
    ..Thus, the present studies point to the possibility that the polyamines and cations behave as endogenous inhibitors for (+/-)[11C]1 binding, leading to the loss of the specific binding in vivo...
  49. ncbi Cross-calibration of ionization chambers in proton and carbon beams
    Tatsuaki Kanai
    National Institute of Radiological Sciences, 9 1, Anagawa 4 chome, Inage Ku, Chiba shi, 263 8555 Chiba, Japan
    Phys Med Biol 49:771-81. 2004
    ..5% lower than those obtained using 400 MeV/u beams. The calibration coefficient obtained by the first method agreed roughly with the results obtained by SOBP beams...
  50. ncbi Biokinetics of radiotellurium in rats
    Y Nishimura
    National Institute of Radiological Sciences, 4 9 1, Anagawa, Inage Ku, Chiba shi, 263 8555, Japan
    Radiat Prot Dosimetry 105:285-90. 2003
    ..The C(F)/C(M) ratio was dependent on the stage of gestation and ranged from 0.2 to 0.5. A little 123mTe was transferred to the suckling rats through the mother's milk when the isotope was administered intravenously to the mother...
  51. ncbi Quality control of CT system for treatment planning using the polybinary calibration method
    Nobuyuki Kanematsu
    Department of Medical Physics, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba shi, Chiba ken, 263 8555, Japan
    Igaku Butsuri 23:140-6. 2003
    ..Practical procedures for commissioning and constancy testing are documented along with the methodologies against various sources of uncertainty. We propose this guideline for quality assurance of heavy charged particle radiotherapy...
  52. ncbi Different radiation susceptibility among five strains of mice detected by a skin reaction
    Mayumi Iwakawa
    Frontier Research Center, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba shi, Chiba ken 263 8555, Japan
    J Radiat Res (Tokyo) 44:7-13. 2003
    ....
  53. ncbi A simplified system for reading time-resolved photoluminescence
    Hiroshi Yasuda
    National Institute of Radiological Sciences, Anagawa 4 9 1, Inage, Chiba shi 263 8555, Japan
    J Radiat Res (Tokyo) 43:S63-5. 2002
    ..It is thus expected that this system will be conveniently used for searching new PL materials that would be more suitable for space radiation dosimetry...
  54. ncbi A CT calibration method based on the polybinary tissue model for radiotherapy treatment planning
    Nobuyuki Kanematsu
    Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, Chiba 263 8555, Japan
    Phys Med Biol 48:1053-64. 2003
    ....
  55. ncbi Time resolved photoluminescence from a phosphate glass (GD-300) irradiated with heavy ions and gamma rays
    Hiroshi Yasuda
    National Institute of Radiological Sciences, Anagawa 4 9 1, Inage, Chiba shi 263 8555, Japan
    Health Phys 84:373-5. 2003
    ..In contrast, the photoluminescence afterglows for the heavy ions were stable over the whole range after excitation. These results indicate that the process of photoluminescence-center formation is different for heavy ions and gamma rays...
  56. ncbi Dose estimation by ESR on tooth enamel from two workers exposed to radiation due to the JCO accident
    Kunio Shiraishi
    Environmental Radiation Protection System Research Group, National Institute of Radiological Sciences, Japan
    J Radiat Res 43:331-5. 2002
    ..3 +/- 3.4 and 10.8 +/- 3.3 Gy, 11.7 +/- 3.5 and 11.4 +/- 3.4 Gy, respectively. The estimated doses were found to be similar and not dependent on the tooth positions, whether the buccal or lingual sides in each tooth...
  57. ncbi Gamma-irradiation effect: variation of photosynthetic activity of Euglena
    T Sakashita
    National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage, Chiba 263 8555, Japan
    Biomed Environ Sci 15:261-7. 2002
    ....
  58. ncbi Analysis of alpha- and beta-tubulin genes of Bombyx mori using an EST database
    Hideki Kawasaki
    Faculty of Agriculture, Utsunomiya University, 350 Mine, Utsunomiya, 321 8505, Tochigi, Japan
    Insect Biochem Mol Biol 33:131-7. 2003
    ....
  59. ncbi Inhibition of DNA-double strand break repair by antimony compounds
    Sentaro Takahashi
    Environmental and Toxicological Research Group, National Institute of Radiological Sciences, 4 9 1 Anagawa, Inage Ku, 263 8555, Chiba, Japan
    Toxicology 180:249-56. 2002
    ..This is the first report to indicate that antimony compounds may inhibit the repair of radiation-induced DNA DSB...
  60. ncbi Histological and elemental changes in the rat brain after local irradiation with carbon ion beams
    Sentaro Takahashi
    Environmental and Toxicological Research Group, National Institute of Radiological Sciences, Anagawa 4 9 1, Inage Ku, Chiba shi, Chiba 263 8555, Japan
    J Radiat Res 43:143-52. 2002
    ....
  61. ncbi Keratinocytes control the proliferation and differentiation of cultured epidermal melanocytes from ultraviolet radiation B-induced pigmented spots in the dorsal skin of hairless mice
    Tomohisa Hirobe
    Radiation Hazards Research Group, National Institute of Radiological Sciences, Anagawa, Inage Ku, Chiba, Japan
    Pigment Cell Res 15:391-9. 2002
    ..These results suggest that the increased proliferative and differentiative activities of mouse epidermal melanocytes from UVB-induced pigmented spots are regulated by keratinocytes, rather than melanocytes...
  62. ncbi Radio-sensitive murine thymoma cell line 3SB: characterization of its apoptosis-resistant variants induced by repeated X-irradiation
    H Hama-Inaba
    Bioregulation Research Group, National Institute of Radiological Sciences, Chiba, Japan
    Mutat Res 403:85-94. 1998
    ..Present result suggests that the induction of X-ray resistance by repeated X-irradiation might be achieved, at least partly, by the enhanced resistance to the ceramide-mediated apoptosis...