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Nuclear medicine practice in Japan: a report of the seventh nationwide survey in 2012

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Abstract

Objective

The Subcommittee on the Survey of Nuclear Medical Practice in Japan has performed a nationwide survey of nuclear medicine practice every 5 years since 1982 to survey contemporary nuclear medicine practice and its changes over the years.

Methods

The subcommittee sent questionnaires, including the number and category of examinations as well as the kind and dose of the radiopharmaceuticals during the 30 days of June 2012, to all the nuclear medicine institutes. The total numbers for the year 2012 were then estimated.

Results

A total of 1,167 institutes responded to the survey, including the 14 in vitro assay institutes and 266 PET centers. The recovery rate was 92 %. The number of gamma cameras installed was 1,425 in total, with 9 % decrease in 5 years. Dual-head cameras and hybrid SPECT/CT scanners accounted for 84 and 10.5 %, respectively. The number of single-photon tracer studies in 2012 was 1.15 million which means decrease in 19 % in 5 years and 29 % in 10 years. All but cerebral perfusion study and sentinel lymphoscintigraphy have decreased. Bone scintigraphy was a leading examination (38.7 %), followed by cardiac studies (29.4 %) and cerebral perfusion study (18.5 %) in order. SPECT studies showed an increase from 42.3 to 47.2 %. PET centers have also increased from 212 to 295, as compared to the last survey. The 135 PET centers have installed one or two in-house cyclotrons. PET studies showed 25.5 % increase in 5 years, with oncology accounting for 96.3 %. 18F-FDG accounted for 98.2 % (505,990 examinations). PET examinations using 11C-methionine have been increasing, with 3,352 examinations in 2012. The number of new PET studies using 11C-PIB PET was 695. 131I-radioiodine targeted therapies showed an increase, including 3,644 patients (53.6 %) for thyroid cancer and 4,889 patients (17.9 %) for hyperthyroidism. Out-patient thyroid bed ablation therapy with 30 mCi of 131I accounted for 21.0 % of cancer patients. The number of admission rooms decreased from 158 to 135 in 5 years. In vitro radioassays have been declining continuously since 1992, with the number of studies of 9.0 million in 2012.

Conclusions

Single-photon examinations showed a continuous tendency toward a decline in the survey. In contrast, the number of hybrid SPECT/CT scanner examinations has increased. PET/CT study in the oncology field and radionuclide targeted therapy have steadily increased.

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Acknowledgments

We thank the institutes all over Japan for answering the questionnaires and the staff at JRIA for analyzing these data and preparing the manuscript. This report was presented in the annual meeting of the Society of Nuclear Medicine and Molecular Imaging at St. Louis in June 2014. The content of this article was published in Radioisotopes 2013; 62:545–608 in Japanese. The second publication of the material in this article in English was approved by the editorial boards of Radioisotopes and Annals of Nuclear Medicine.

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Authors and Affiliations

  1. Department of Nuclear Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan

    Seigo Kinuya

  2. Fukuoka University Hospital, Fukuoka, Japan

    Yasuo Kuwabara

  3. Tohoku University, Sendai, Japan

    Kentaro Inoue

  4. Dokkyo Medical University, Mibu-machi, Japan

    Setsu Sakamoto

  5. Osaka University, Osaka, Japan

    Eku Shimosegawa & Keiko Takeoka

  6. Okayama University, Okayama, Japan

    Yoshihiro Takeda

  7. Fujita Health University, Toyoake, Japan

    Hiroshi Toyama

  8. Teikyo University Chiba Medical Center, Ichihara, Japan

    Yasuo Niio

  9. Kagawa University, Takamatsu, Japan

    Yoshihiro Nishiyama

  10. Hokkaido University, Sapporo, Japan

    Keiichiro Yoshinaga

  11. Tokyo Medical University, Tokyo, Japan

    Mana Yoshimura

Authors
  1. Seigo Kinuya
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  2. Yasuo Kuwabara
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  3. Kentaro Inoue
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  4. Setsu Sakamoto
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  5. Eku Shimosegawa
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  6. Keiko Takeoka
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  7. Yoshihiro Takeda
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  8. Hiroshi Toyama
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  9. Yasuo Niio
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  10. Yoshihiro Nishiyama
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  11. Keiichiro Yoshinaga
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  12. Mana Yoshimura
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Corresponding author

Correspondence to Seigo Kinuya.

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Kinuya, S., Kuwabara, Y., Inoue, K. et al. Nuclear medicine practice in Japan: a report of the seventh nationwide survey in 2012. Ann Nucl Med 28, 1032–1038 (2014). https://doi.org/10.1007/s12149-014-0893-y

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  • DOI: https://doi.org/10.1007/s12149-014-0893-y

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