Chio Okuyama

1.2k total citations
70 papers, 869 citations indexed

About

Chio Okuyama is a scholar working on Radiology, Nuclear Medicine and Imaging, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, Chio Okuyama has authored 70 papers receiving a total of 869 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Radiology, Nuclear Medicine and Imaging, 22 papers in Pulmonary and Respiratory Medicine and 13 papers in Surgery. Recurrent topics in Chio Okuyama's work include Medical Imaging Techniques and Applications (19 papers), Medical Imaging and Pathology Studies (10 papers) and Advanced MRI Techniques and Applications (8 papers). Chio Okuyama is often cited by papers focused on Medical Imaging Techniques and Applications (19 papers), Medical Imaging and Pathology Studies (10 papers) and Advanced MRI Techniques and Applications (8 papers). Chio Okuyama collaborates with scholars based in Japan, United States and United Kingdom. Chio Okuyama's co-authors include Tsunehiko Nishimura, Yo Ushijima, Takao Kubota, Kei Yamada, Takako Suzuki, Toshihide Yoshida, Kana Kobayashi, Tomoki Nakamura, Takuji Yamagami and Shinya Kagawa and has published in prestigious journals such as Stroke, Journal of Neurology Neurosurgery & Psychiatry and European Journal of Nuclear Medicine and Molecular Imaging.

In The Last Decade

Chio Okuyama

67 papers receiving 840 citations

Peers

Chio Okuyama

RNMI

PRM

CCM

SURGE

PHYSI

Jahae Kim South Korea

Kyoung Sook Won South Korea

Mateen Moghbel United States

J. Jiménez‐Bonilla Spain

Tae Joo Jeon South Korea

Shigemi Futami Japan

G. Ferlin Italy

Wakoh Takahashi Japan

Shigeaki Higashiyama Japan

Qiang Huang China

Jahae Kim South Korea

Chio Okuyama

356 ×0.9

RNMI

186 ×0.9

PRM

105 ×0.7

CCM

122 ×0.8

SURGE

91 ×0.7

PHYSI

Citations per year, relative to Chio Okuyama Chio Okuyama (= 1×) peers Jahae Kim

Countries citing papers authored by Chio Okuyama

Since Specialization

Citations

This map shows the geographic impact of Chio Okuyama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Chio Okuyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Chio Okuyama more than expected).

Fields of papers citing papers by Chio Okuyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Chio Okuyama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Chio Okuyama. The network helps show where Chio Okuyama may publish in the future.

Co-authorship network of co-authors of Chio Okuyama

This figure shows the co-authorship network connecting the top 25 collaborators of Chio Okuyama. A scholar is included among the top collaborators of Chio Okuyama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Chio Okuyama. Chio Okuyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Koyasu, Sho, Chiaki Suzuki, Keigo Honda, Chio Okuyama, & Yuji Nakamoto. (2025). Enhanced Bone Pseudometastasis Due to Granulocyte Colony-stimulating Factor. 2(1).

Okuyama, Chio, Tatsuya Higashi, Koichi Ishizu, et al.. (2024). New objective simple evaluation methods of amyloid PET/CT using whole-brain histogram and Top20%-Map. Annals of Nuclear Medicine. 38(9). 763–773. 1 indexed citations

Miyamoto, Masaomi, Chio Okuyama, Shinya Kagawa, et al.. (2023). Radiation dosimetry and pharmacokinetics of the tau PET tracer florzolotau (18F) in healthy Japanese subjects. Annals of Nuclear Medicine. 37(5). 300–309. 3 indexed citations

Yamauchi, Hiroshi, et al.. (2022). Misery Perfusion and Tau Deposition in Atherosclerotic Major Cerebral Artery Disease: A ¹⁸ F-Florzolotau Positron Emission Tomography Study. Stroke. 53(12). e500–e503. 8 indexed citations

Yamauchi, Hiroshi, et al.. (2022). Neuronal Alterations in Secondary Thalamic Degeneration Due to Cerebral Infarction: A ¹¹ C-Flumazenil Positron Emission Tomography Study. Stroke. 53(10). 3153–3163. 7 indexed citations

Ubukata, Shiho, Naoya Oishi, Tatsuya Higashi, et al.. (2020). <p>Spatial Patterns of Amyloid Deposition in Patients with Chronic Focal or Diffuse Traumatic Brain Injury Using <sup>18</sup>F-FPYBF-2 PET</p>. Neuropsychiatric Disease and Treatment. Volume 16. 2719–2732. 8 indexed citations

Sano, Yuko, Chio Okuyama, Tomoko Iehara, et al.. (2012). New semi-quantitative 123I-MIBG estimation method compared with scoring system in follow-up of advanced neuroblastoma: utility of total MIBG retention ratio versus scoring method. Annals of Nuclear Medicine. 26(6). 462–470. 4 indexed citations

Yamagami, Takuji, et al.. (2011). Evaluation of hepatocyte growth factor plasmid therapeutic effect by 99mTc-hexakis-2-methyoxy-isobutylisonitrile blood flow scintigraphy in a rat model of hind limb ischemia. Nuclear Medicine Communications. 32(9). 818–823. 1 indexed citations

Okuyama, Chio, Kenichi Nakajima, Tsuguru Hatta, et al.. (2011). Incremental prognostic value of myocardial perfusion single photon emission computed tomography for patients with diabetes and chronic kidney disease. Nuclear Medicine Communications. 32(10). 913–919. 17 indexed citations

10.

Yamagami, Takuji, Keiichi Kanda, Chio Okuyama, & Tsunehiko Nishimura. (2009). Tc-99m-MIBI scintigraphy in evaluating the effect of hepatocyte growth factor gene therapy for peripheral arteriosclerosis obliterans. Annals of Nuclear Medicine. 23(2). 205–208. 2 indexed citations

11.

Okuyama, Chio, Takao Kubota, Shigenori Matsushima, Yo Ushijima, & Tsunehiko Nishimura. (2009). Intense F-18 FDG Accumulation in Idiopathic Tumoral Calcinosis. Clinical Nuclear Medicine. 34(4). 230–232. 6 indexed citations

12.

Kubota, Takao, Yo Ushijima, Chio Okuyama, & Tsunehiko Nishimura. (2005). A region-of-interest template for three-dimensional stereotactic surface projection images: Initial application to the analysis of Alzheimer??s disease and mild cognitive impairment. Nuclear Medicine Communications. 27(1). 37–44. 8 indexed citations

13.

Okuyama, Chio, Takao Kubota, Kei Yamada, et al.. (2005). Pitfalls of FDG-PET for the diagnosis of osteoblastic bone metastases in patients with breast cancer. European Journal of Nuclear Medicine and Molecular Imaging. 32(11). 1253–1258. 167 indexed citations

14.

Goto, Mariko, et al.. (2005). Assessment of the solid-state gamma camera to depict axillary sentinel lymph nodes in breast cancer patients. Annals of Nuclear Medicine. 19(7). 627–631. 5 indexed citations

15.

Kobayashi, Kana, et al.. (2005). Do short-time SPECT images of bone scintigraphy improve the diagnostic value in the evaluation of solitary lesions in the thoracic spine in patients with extraskeletal malignancies?. Annals of Nuclear Medicine. 19(7). 557–566. 15 indexed citations

16.

Hirota, T, et al.. (2004). Small pulmonary arteriovenous fistulae revealed by scintigraphy during selective injection of⁹⁹Tc^m-macroaggregated albumin. British Journal of Radiology. 77(917). 445–448. 5 indexed citations

17.

Okuyama, Chio, et al.. (2002). Utility of follow-up studies using meta-[123I]iodobenzylguanidine scintigraphy for detecting recurrent neuroblastoma. Nuclear Medicine Communications. 23(7). 663–672. 16 indexed citations

18.

Ushijima, Yo, et al.. (2002). Relationship between cognitive function and regional cerebral blood flow in Alzheimerʼs disease. Nuclear Medicine Communications. 23(8). 779–784. 23 indexed citations

19.

Sugihara, Hiroki, et al.. (1999). Reverse redistribution of Tc-99m-tetrofosmin in patients with acute myocardial infarction. Annals of Nuclear Medicine. 13(1). 43–47. 20 indexed citations

20.

Sugihara, Hiroki, Noriyuki Kinoshita, Tomoki Nakamura, et al.. (1998). Reverse redistribution of Tc-99m-tetrofosmin in exercise myocardial SPECT in patients with hypertrophic cardiomyopathy. Annals of Nuclear Medicine. 12(5). 287–292. 13 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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