Kinuya Seigo, Kuwabara Yasuo, Inoue Kentaro, Sakamoto Setsu, Shimosegawa Eku, Takeoka Keiko, Takeda Yoshihiro, Toyama Hiroshi, Niio Yasuo, Nishiyama Yoshihiro, Yoshinaga Keiichiro, Yoshimura Mana
Department of Nuclear Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan,
Ann Nucl Med. 2014 Dec;28(10):1032-8. doi: 10.1007/s12149-014-0893-y. Epub 2014 Aug 12.
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.
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.
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 %. (18)F-FDG accounted for 98.2 % (505,990 examinations). PET examinations using (11)C-methionine have been increasing, with 3,352 examinations in 2012. The number of new PET studies using (11)C-PIB PET was 695. (131)I-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 (131)I 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.
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.
自1982年起，日本核医学实践调查小组委员会每5年在全国范围内开展一次核医学实践调查，以了解当代核医学实践及其多年来的变化情况。
该小组委员会向所有核医学机构发放问卷，内容包括2012年6月30日期间的检查数量和类别，以及放射性药物的种类和剂量。随后估算出2012年的总数。
共有1167家机构回复了调查，其中包括14家体外分析机构和266家PET中心。回复率为92%。总共安装了1425台伽马相机，5年减少了9%。双头相机和SPECT/CT混合型扫描仪分别占84%和10.5%。2012年单光子示踪剂研究数量为115万例，意味着5年减少了19%，10年减少了29%。除脑灌注研究和前哨淋巴结闪烁显像外，其他研究均有减少。骨闪烁显像为主要检查项目（38.7%），其次依次为心脏检查（29.4%）和脑灌注研究（18.5%）。SPECT研究从42.3%增至47.2%。与上次调查相比，PET中心也从212家增至295家。135家PET中心安装了一台或两台内部回旋加速器。PET研究5年增长了25.5%，其中肿瘤学占96.3%。（18）F-FDG占98.2%（505,990例检查）。使用（11）C-蛋氨酸的PET检查一直在增加，2012年有3352例检查。使用（11）C-PIB PET的新PET研究数量为695例。（131）I放射性碘靶向治疗有所增加，包括3644例甲状腺癌患者（53.6%）和4889例甲状腺功能亢进患者（17.9%）。采用30mCi（131）I的门诊甲状腺床消融治疗占癌症患者的21.0%。住院病房数量5年从158间降至135间。自1992年以来，体外放射分析一直在持续下降，2012年研究数量为900万例。
在本次调查中，单光子检查呈持续下降趋势。相比之下，SPECT/CT混合型扫描仪检查数量有所增加。肿瘤学领域的PET/CT研究和放射性核素靶向治疗稳步增加。
