T. Okamura

508 total citations
34 papers, 380 citations indexed

About

T. Okamura is a scholar working on Oncology, Radiology, Nuclear Medicine and Imaging and Pharmacology. According to data from OpenAlex, T. Okamura has authored 34 papers receiving a total of 380 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Oncology, 11 papers in Radiology, Nuclear Medicine and Imaging and 8 papers in Pharmacology. Recurrent topics in T. Okamura's work include Drug Transport and Resistance Mechanisms (10 papers), Cholinesterase and Neurodegenerative Diseases (8 papers) and Radiopharmaceutical Chemistry and Applications (7 papers). T. Okamura is often cited by papers focused on Drug Transport and Resistance Mechanisms (10 papers), Cholinesterase and Neurodegenerative Diseases (8 papers) and Radiopharmaceutical Chemistry and Applications (7 papers). T. Okamura collaborates with scholars based in Japan, United Kingdom and United States. T. Okamura's co-authors include Tatsuya Kikuchi, Toshiaki Irie, Ming‐Rong Zhang, Maki Okada, Kiyoshi Fukushi, Hidekatsu Wakizaka, Naoki Hirano, Yasushi Arano, Chie Toramatsu and Makoto Takei and has published in prestigious journals such as NeuroImage, Free Radical Biology and Medicine and Journal of Medicinal Chemistry.

In The Last Decade

T. Okamura

32 papers receiving 369 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
T. Okamura Japan 13 123 96 80 58 55 34 380
Tatsuya Kikuchi Japan 14 143 1.2× 129 1.3× 125 1.6× 126 2.2× 58 1.1× 58 575
Mila Renftel Sweden 6 280 2.3× 245 2.6× 33 0.4× 21 0.4× 79 1.4× 6 752
Elsbeth G. Chikhale United States 8 148 1.2× 184 1.9× 20 0.3× 14 0.2× 63 1.1× 11 466
Ryoichi Saitoh Japan 12 109 0.9× 176 1.8× 33 0.4× 17 0.3× 43 0.8× 20 463
Carmela Inglese Italy 13 279 2.3× 289 3.0× 25 0.3× 34 0.6× 93 1.7× 20 561
Jennifer L. Liras United States 16 186 1.5× 230 2.4× 47 0.6× 22 0.4× 72 1.3× 21 601
П.В. Ершов Russia 14 49 0.4× 229 2.4× 60 0.8× 21 0.4× 9 0.2× 63 547
Éva Hellinger Hungary 6 160 1.3× 92 1.0× 28 0.3× 7 0.1× 43 0.8× 9 400
Nisha K. Ramakrishnan Netherlands 12 84 0.7× 401 4.2× 52 0.7× 80 1.4× 24 0.4× 29 599
Haritha Mandula United States 6 54 0.4× 85 0.9× 47 0.6× 10 0.2× 27 0.5× 7 318

Countries citing papers authored by T. Okamura

Since Specialization
Citations

This map shows the geographic impact of T. Okamura'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 T. Okamura with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. Okamura more than expected).

Fields of papers citing papers by T. Okamura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by T. Okamura. 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 T. Okamura. The network helps show where T. Okamura may publish in the future.

Co-authorship network of co-authors of T. Okamura

This figure shows the co-authorship network connecting the top 25 collaborators of T. Okamura. A scholar is included among the top collaborators of T. Okamura 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 T. Okamura. T. Okamura is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Okamura, T., Tatsuya Kikuchi, Masanao Ogawa, & Ming‐Rong Zhang. (2024). Improved synthesis of 6-bromo-7-[11C]methylpurine for clinical use. EJNMMI Radiopharmacy and Chemistry. 9(1). 10–10. 1 indexed citations
2.
Ishii, Hideki, Tomoteru Yamasaki, T. Okamura, et al.. (2023). Evaluation and improvement of CuI‐mediated 11C‐cyanation. Journal of Labelled Compounds and Radiopharmaceuticals. 66(3). 95–107. 2 indexed citations
3.
Okamura, T., Maki Okada, Tatsuya Kikuchi, Hidekatsu Wakizaka, & Ming‐Rong Zhang. (2017). Kinetics and metabolism of apocynin in the mouse brain assessed with positron-emission tomography. Phytomedicine. 38. 84–89. 5 indexed citations
4.
Kikuchi, Tatsuya, T. Okamura, Maki Okada, et al.. (2016). Benzyl [11C]Hippurate as an Agent for Measuring the Activities of Organic Anion Transporter 3 in the Brain and Multidrug Resistance-Associated Protein 4 in the Heart of Mice. Journal of Medicinal Chemistry. 59(12). 5847–5856. 6 indexed citations
5.
Galante, Eva, T. Okamura, Kerstin Sander, et al.. (2014). Development of Purine-Derived18F-Labeled Pro-drug Tracers for Imaging of MRP1 Activity with PET. Journal of Medicinal Chemistry. 57(3). 1023–1032. 11 indexed citations
6.
Kikuchi, Tatsuya, T. Okamura, Hidekatsu Wakizaka, et al.. (2014). OAT3-Mediated Extrusion of the 99mTc-ECD Metabolite in the Mouse Brain. Journal of Cerebral Blood Flow & Metabolism. 34(4). 585–588. 13 indexed citations
7.
Okada, Maki, Ryuji Nakao, Sotaro Momosaki, et al.. (2013). Improvement of brain uptake for in vivo PET imaging of astrocytic oxidative metabolism using benzyl [1-11C]acetate. Applied Radiation and Isotopes. 78. 102–107. 5 indexed citations
8.
Okamura, T., Tatsuya Kikuchi, Maki Okada, Hidekatsu Wakizaka, & Ming‐Rong Zhang. (2013). Imaging of Activity of Multidrug Resistance–Associated Protein 1 in the Lungs. American Journal of Respiratory Cell and Molecular Biology. 49(3). 335–340. 24 indexed citations
9.
10.
Okamura, T., Tatsuya Kikuchi, & Toshiaki Irie. (2010). PET Imaging of MRP1 Function in the Living Brain: Method Development and Future Perspectives. Current Topics in Medicinal Chemistry. 10(17). 1810–1819. 11 indexed citations
11.
Okamura, T., Tatsuya Kikuchi, Kiyoshi Fukushi, & Toshiaki Irie. (2009). Reactivity of 6-Halopurine Analogs with Glutathione as a Radiotracer for Assessing Function of Multidrug Resistance-Associated Protein 1. Journal of Medicinal Chemistry. 52(22). 7284–7288. 19 indexed citations
12.
Okamura, T., Jun Igarashi, Tatsuya Kikuchi, et al.. (2009). A radiotracer method to study efflux transport of iodide liberated from thyroid hormones via deiodination metabolism in the brain. Life Sciences. 84(23-24). 791–795. 6 indexed citations
13.
Kikuchi, Tatsuya, T. Okamura, Ming‐Rong Zhang, Kiyoshi Fukushi, & Toshiaki Irie. (2009). In vivo evaluation of N‐[18F]fluoroethylpiperidin‐4ylmethyl acetate in rats compared with MP4A as a probe for measuring cerebral acetylcholinesterase activity. Synapse. 64(3). 209–215. 7 indexed citations
14.
Okamura, T., Tatsuya Kikuchi, Kiyoshi Fukushi, Yasushi Arano, & Toshiaki Irie. (2007). A novel noninvasive method for assessing glutathione-conjugate efflux systems in the brain. Bioorganic & Medicinal Chemistry. 15(9). 3127–3133. 24 indexed citations
15.
Kikuchi, Tatsuya, T. Okamura, Kiyoshi Fukushi, et al.. (2007). Cerebral Acetylcholinesterase Imaging: Development of the Radioprobes. Current Topics in Medicinal Chemistry. 7(18). 1790–1799. 20 indexed citations
16.
Okamura, T., et al.. (2007). Improvement of 100W Class Room Temperature Magnetic Refrigerator. 281–288. 33 indexed citations
17.
18.
Kikuchi, Tatsuya, Ming‐Rong Zhang, Nobuo Ikota, et al.. (2005). N-[18F]Fluoroethylpiperidin-4ylmethyl Acetate, a Novel Lipophilic Acetylcholine Analogue for PET Measurement of Brain Acetylcholinesterase Activity. Journal of Medicinal Chemistry. 48(7). 2577–2583. 12 indexed citations
19.
Ono, M., T. Kuriyama, Akihide Oguchi, & T. Okamura. (2005). Cryocooler-Cooled High<tex>$rm T_rm c$</tex>Superconducting Magnet Excited by a Hybrid Semiconductor-HTS Thermoelectric Element. IEEE Transactions on Applied Superconductivity. 15(2). 1516–1519. 2 indexed citations
20.
Kikuchi, Tatsuya, Ming‐Rong Zhang, Nobuo Ikota, et al.. (2004). N-[18F]fluoroethylpiperidin-4-ylmethyl butyrate: a novel radiotracer for quantifying brain butyrylcholinesterase activity by positron emission tomography. Bioorganic & Medicinal Chemistry Letters. 14(8). 1927–1930. 10 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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