Ryuichiro Ashikaga

709 total citations
32 papers, 518 citations indexed

About

Ryuichiro Ashikaga is a scholar working on Radiology, Nuclear Medicine and Imaging, Surgery and Neurology. According to data from OpenAlex, Ryuichiro Ashikaga has authored 32 papers receiving a total of 518 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Radiology, Nuclear Medicine and Imaging, 10 papers in Surgery and 7 papers in Neurology. Recurrent topics in Ryuichiro Ashikaga's work include Advanced MRI Techniques and Applications (10 papers), MRI in cancer diagnosis (6 papers) and Medical Imaging Techniques and Applications (4 papers). Ryuichiro Ashikaga is often cited by papers focused on Advanced MRI Techniques and Applications (10 papers), MRI in cancer diagnosis (6 papers) and Medical Imaging Techniques and Applications (4 papers). Ryuichiro Ashikaga collaborates with scholars based in Japan and Finland. Ryuichiro Ashikaga's co-authors include Osamu Ishida, Y Araki, Yasumasa Nishimura, Yutaka Araki, Takamichi Murakami, Masahiro Okada, Izumi Imaoka, Yukinobu Yagyu, Taro Shimono and Seishi Kumano and has published in prestigious journals such as American Journal of Roentgenology, Medicine and American Journal of Neuroradiology.

In The Last Decade

Ryuichiro Ashikaga

31 papers receiving 504 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryuichiro Ashikaga Japan 13 170 158 144 117 82 32 518
Matakazu Furukawa Japan 13 156 0.9× 194 1.2× 146 1.0× 146 1.2× 160 2.0× 30 622
Govind Mukundan United States 8 313 1.8× 311 2.0× 54 0.4× 62 0.5× 99 1.2× 14 742
J. Cazejust France 11 179 1.1× 179 1.1× 159 1.1× 218 1.9× 52 0.6× 34 577
Tamer Atasever Türkiye 13 208 1.2× 105 0.7× 71 0.5× 77 0.7× 154 1.9× 43 555
A. Julio Martínez United States 13 135 0.8× 156 1.0× 344 2.4× 359 3.1× 133 1.6× 19 828
Serhan Atilla Türkiye 13 150 0.9× 150 0.9× 158 1.1× 36 0.3× 105 1.3× 21 523
Maria Grazia Sommaruga Italy 7 134 0.8× 85 0.5× 174 1.2× 45 0.4× 62 0.8× 9 622
Na-Young Shin South Korea 14 161 0.9× 90 0.6× 130 0.9× 77 0.7× 102 1.2× 28 507
Luca Aiani Italy 10 261 1.5× 142 0.9× 60 0.4× 133 1.1× 160 2.0× 19 654
Yangsean Choi South Korea 17 369 2.2× 180 1.1× 106 0.7× 55 0.5× 92 1.1× 54 729

Countries citing papers authored by Ryuichiro Ashikaga

Since Specialization
Citations

This map shows the geographic impact of Ryuichiro Ashikaga'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 Ryuichiro Ashikaga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuichiro Ashikaga more than expected).

Fields of papers citing papers by Ryuichiro Ashikaga

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryuichiro Ashikaga

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuichiro Ashikaga. A scholar is included among the top collaborators of Ryuichiro Ashikaga 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 Ryuichiro Ashikaga. Ryuichiro Ashikaga 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.
Misaka, Tomofumi, Yukihiko Hashimoto, Ryuichiro Ashikaga, & Takayuki Ishida. (2024). Chemical shift-encoded MRI with compressed sensing combined with parallel imaging for proton density fat fraction measurement of the lumbar vertebral bone marrow. Medicine. 103(15). e37748–e37748.
2.
3.
Hasegawa, Hirokazu, Ryuichiro Ashikaga, Kaoru Okajima, et al.. (2017). Comparison of lesion enhancement between BB Cube and 3D-SPGR images for brain tumors with 1.5-T magnetic resonance imaging. Japanese Journal of Radiology. 35(8). 463–471. 1 indexed citations
4.
Ashikaga, Ryuichiro, Yukinobu Yagyu, Tetsuya Wakayama, et al.. (2015). Contrast enhancement of intracranial lesions at 1.5 T: comparison among 2D spin echo, black-blood (BB) Cube, and BB Cube-FLAIR sequences. European Radiology. 25(11). 3175–3186. 3 indexed citations
5.
Kashiwagi, Nobuo, Hiroto Takahashi, Tomoko Hyodo, et al.. (2013). Intravertebral pneumatocysts of the cervical spine. Neuroradiology. 55(11). 1341–1344. 7 indexed citations
6.
Takahashi, Hiroto, Kazunari Ishii, Tomoko Hyodo, et al.. (2013). Clinical Application of 3D Arterial Spin-Labeled Brain Perfusion Imaging for Alzheimer Disease: Comparison with Brain Perfusion SPECT. American Journal of Neuroradiology. 35(5). 906–911. 30 indexed citations
7.
Kumano, Seishi, Masahiro Okada, Taro Shimono, et al.. (2012). T-staging of gastric cancer of air-filling multidetector-row CT: Comparison with hydro-multidetector-row CT. European Journal of Radiology. 81(11). 2953–2960. 23 indexed citations
8.
Kumano, Seishi, Masahiro Okada, Tomoko Hyodo, et al.. (2012). Optimal dose of contrast medium for depiction of hypervascular HCC on dynamic MDCT. European Journal of Radiology. 81(11). 2978–2983. 14 indexed citations
9.
Shimono, Taro, et al.. (2010). Fourth ventricular mixed germ cell tumor demonstrating adipose tissue in a young adult. Japanese Journal of Radiology. 28(2). 166–168. 1 indexed citations
10.
Okada, Masahiro, Taro Shimono, Rina Ando, et al.. (2009). Adrenal masses: the value of additional fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) in differentiating between benign and malignant lesions. Annals of Nuclear Medicine. 23(4). 349–354. 54 indexed citations
11.
Shimono, Taro, Makoto Hosono, Ryuichiro Ashikaga, et al.. (2008). Ring-shaped lateral ventricular nodules: an incidental finding on brain magnetic resonance imaging. Neuroradiology. 51(3). 145–150. 6 indexed citations
12.
Shimono, Taro, Takahiro Tsuboyama, Masatomo Kuwabara, et al.. (2008). Discordance of motion artifacts on magnetic resonance imaging in Creutzfeldt-Jakob disease: comparison of diffusion-weighted and conventional imaging sequences. Radiation Medicine. 26(3). 151–155. 1 indexed citations
13.
Tsuboyama, Takahiro, Izumi Imaoka, Taro Shimono, et al.. (2008). T2*-sensitized High-resolution Magnetic Resonance Venography Using 3D-PRESTO Technique. Magnetic Resonance in Medical Sciences. 7(2). 73–77. 7 indexed citations
14.
Ashikaga, Ryuichiro, et al.. (2000). Persistent hypoglossal artery associated with arteriovenous malformation: a case report. European Journal of Radiology. 33(1). 59–62. 13 indexed citations
15.
Ashikaga, Ryuichiro, et al.. (2000). Long-Term Results of Lipiodol-Transcatheter Arterial Embolization With Cisplatin or Doxorubicin for Unresectable Hepatocellular Carcinoma. American Journal of Clinical Oncology. 23(6). 564–568. 66 indexed citations
16.
Yamamoto, Takashi, Ryuichiro Ashikaga, Yutaka Araki, & Yasumasa Nishimura. (2000). A case of Marchiafava-Bignami disease: MRI findings on spin-echo and fluid attenuated inversion recovery (FLAIR) images. European Journal of Radiology. 34(2). 141–143. 12 indexed citations
17.
Ashikaga, Ryuichiro, et al.. (1999). MR fluid-attenuated inversion recovery imaging as routine brain T2-weighted imaging. European Journal of Radiology. 32(2). 136–143. 16 indexed citations
18.
Araki, Yutaka, Ryuichiro Ashikaga, Koichi Fujii, et al.. (1998). MR imaging of meniscal tears with discoid lateral meniscus. European Journal of Radiology. 27(2). 153–160. 36 indexed citations
19.
Ashikaga, Ryuichiro, Y Araki, & Osamu Ishida. (1997). MRI of head injury using FLAIR. Neuroradiology. 39(4). 239–242. 114 indexed citations
20.
Ashikaga, Ryuichiro, Y Araki, & Osamu Ishida. (1995). Bilateral aberrant internal carotid arteries. Neuroradiology. 37(8). 655–657. 7 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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