Takashi Ashikaga

3.3k total citations · 1 hit paper
141 papers, 2.3k citations indexed

About

Takashi Ashikaga is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Takashi Ashikaga has authored 141 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 75 papers in Cardiology and Cardiovascular Medicine, 57 papers in Surgery and 30 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Takashi Ashikaga's work include Coronary Interventions and Diagnostics (37 papers), Cardiac Imaging and Diagnostics (21 papers) and Cardiac electrophysiology and arrhythmias (19 papers). Takashi Ashikaga is often cited by papers focused on Coronary Interventions and Diagnostics (37 papers), Cardiac Imaging and Diagnostics (21 papers) and Cardiac electrophysiology and arrhythmias (19 papers). Takashi Ashikaga collaborates with scholars based in Japan, United States and Netherlands. Takashi Ashikaga's co-authors include David G. Wilder, John W. Frymoyer, B MacPherson, Malcolm H. Pope, Mitsuaki Isobe, Yukio Kishi, Shunji Yoshikawa, Noriyoshi Yamawake, Mitsuhiro Nishizaki and Fujío Numano and has published in prestigious journals such as Circulation, Journal of Clinical Oncology and SHILAP Revista de lepidopterología.

In The Last Decade

Takashi Ashikaga

130 papers receiving 2.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Risk factors in low-back pain. An epidemiological survey.

1983 592 citations John W. Frymoyer, Malcolm H. Pope et al. Journal of Bone and Joint Surgery profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Takashi Ashikaga Japan	22	720	529	470	362	354	141	2.3k
Helen Keen Australia	33	292 0.4×	227 0.4×	996 2.1×	171 0.5×	266 0.8×	157	4.1k
David E. Fish United States	24	352 0.5×	229 0.4×	1.3k 2.7×	384 1.1×	227 0.6×	58	2.3k
Marc R. Barnard United States	32	1.9k 2.6×	342 0.6×	845 1.8×	568 1.6×	326 0.9×	59	4.4k
Alexandros A. Drosos Greece	37	218 0.3×	149 0.3×	329 0.7×	360 1.0×	419 1.2×	156	4.5k
Hyun‐Sook Kim South Korea	19	594 0.8×	114 0.2×	391 0.8×	194 0.5×	162 0.5×	173	1.7k
Pierre‐Yves Scarabin France	39	1.1k 1.5×	130 0.2×	407 0.9×	832 2.3×	283 0.8×	88	5.6k
Müjdat Yenicesu Türkiye	33	666 0.9×	147 0.3×	522 1.1×	540 1.5×	368 1.0×	70	3.1k
C. Roubille France	21	224 0.3×	177 0.3×	275 0.6×	271 0.7×	219 0.6×	68	2.0k
Kenta Ito Japan	27	727 1.0×	106 0.2×	479 1.0×	155 0.4×	293 0.8×	51	2.0k
Jun Ying United States	30	171 0.2×	177 0.3×	548 1.2×	198 0.5×	660 1.9×	104	3.0k

Countries citing papers authored by Takashi Ashikaga

Since Specialization

Citations

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

Fields of papers citing papers by Takashi Ashikaga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takashi Ashikaga

This figure shows the co-authorship network connecting the top 25 collaborators of Takashi Ashikaga. A scholar is included among the top collaborators of Takashi 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 Takashi Ashikaga. Takashi Ashikaga 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

Miyazaki, Ryoichi, et al.. (2025). Optical coherence tomography image with the three circles sign caused by the Z-shape phenomenon. PubMed. 11(1). 50–51. 1 indexed citations

Ashikaga, Takashi, Tetsumin Lee, Ryoichi Miyazaki, et al.. (2024). Methods for treating coronary eruptive calcified nodules. Catheterization and Cardiovascular Interventions. 104(5). 899–906.

Lee, Tetsumin, Masashi Nagase, Toru Misawa, et al.. (2024). The impact of novel scoring balloon and cutting balloon after orbital atherectomy on severely calcified coronary lesion as assessed by optical coherence tomography. Catheterization and Cardiovascular Interventions. 104(2). 213–219. 2 indexed citations

Lee, Tetsumin, Takashi Ashikaga, Toshihiro Nozato, et al.. (2023). Predictors of coronary artery injury after orbital atherectomy as assessed by optical coherence tomography. The International Journal of Cardiovascular Imaging. 39(7). 1367–1374. 3 indexed citations

Mitsui, Kentaro, Tetsumin Lee, Ryoichi Miyazaki, et al.. (2023). Drug‐coated balloon strategy following orbital atherectomy for calcified coronary artery compared with drug‐eluting stent: One‐year outcomes and optical coherence tomography assessment. Catheterization and Cardiovascular Interventions. 102(1). 11–17. 8 indexed citations

Sagawa, Yuichiro, Yasutoshi Nagata, Takanori Yamaguchi, et al.. (2022). Alcohol Consumption Is Associated With Postablation Recurrence but Not Changes in Atrial Substrate in Patients With Atrial Fibrillation: Insight from a High‐Density Mapping Study. Journal of the American Heart Association. 11(13). e025697–e025697. 5 indexed citations

Mitsui, Kentaro, Rentaro Oda, Tetsumin Lee, et al.. (2021). Multiple mycotic aneurysms with infective endocarditis: A case report. Journal of Infection and Chemotherapy. 27(10). 1513–1516. 2 indexed citations

Watanabe, Keita, Yasutoshi Nagata, Shinichiro Okata, et al.. (2021). Impact of the sinus node recovery time after termination of atrial fibrillation during catheter ablation on clinical outcomes in patients with persistent atrial fibrillation. PLoS ONE. 16(11). e0259750–e0259750. 3 indexed citations

Nagata, Yasutoshi, Tetsuo Yamaguchi, Masashi Nagase, et al.. (2019). Effect of diurnal variations in the QRS complex and T waves on the eligibility for subcutaneous implantable cardioverter-defibrillators. Heart Rhythm. 16(6). 913–920. 3 indexed citations

10.

Yoshikawa, Shunji, et al.. (2019). Long-Term Efficacy and Safety of Everolimus-Eluting Stent Implantation in Japanese Patients with Acute Coronary Syndrome: Five-Year Real-World Data from the Tokyo-MD PCI Study. Journal of Interventional Cardiology. 2019. 1–13. 6 indexed citations

11.

Kurabayashi, Manabu, M Asano, Tsukasa Shimura, et al.. (2017). Ultra-long acting calcium channel blockers may decrease accuracy of the acetylcholine provocation test. International Journal of Cardiology. 236. 71–75. 1 indexed citations

12.

Ohigashi, Hirokazu, Natsuko Tamura, Yusuke Ebana, et al.. (2016). Effects of immunosuppressive and biological agents on refractory Takayasu arteritis patients unresponsive to glucocorticoid treatment. Journal of Cardiology. 69(5). 774–778. 37 indexed citations

13.

Ashikaga, Takashi, et al.. (2015). Comparison of outcomes after everolimus-eluting stent implantation in diabetic versus non-diabetic patients in the Tokyo-MD PCI study. Journal of Cardiology. 67(3). 241–247. 17 indexed citations

14.

Ashikaga, Takashi, Mitsuhiro Nishizaki, & Noriyoshi Yamawake. (2008). Difficult stent delivery: Use of an aspiration catheter as a “sheath”. Catheterization and Cardiovascular Interventions. 71(7). 909–912. 4 indexed citations

15.

Harlow, Seth P., David N. Krag, Takashi Ashikaga, et al.. (2001). Gamma probe guided biopsy of the sentinel node in malignant melanoma: a multicentre study. Melanoma Research. 11(1). 45–55. 63 indexed citations

16.

Ashikaga, Takashi, et al.. (1998). Development of sentinel node targeting technique in breast cancer patients. Clinical Imaging. 22(5). 376–376. 10 indexed citations

17.

Kishi, Yukio, et al.. (1997). Co‐culture of Platelets with Activated J774.1 Cells: Effects on Platelet Aggregation and Cyclic Nucleotides. Annals of the New York Academy of Sciences. 811(1). 525–532. 1 indexed citations

18.

Kishi, Yukio, Takashi Ashikaga, & F Numano. (1992). Inhibition of platelet aggregation by prostacyclin is attenuated after exercise in patients with angina pectoris. American Heart Journal. 123(2). 291–297. 20 indexed citations

19.

Kishi, Yukio, Takashi Ashikaga, & Fujío Numano. (1992). Alteration of adenine nucleotide metabolism in coronary smooth muscle cells by activated platelets. Thrombosis Research. 65(4-5). 571–584. 4 indexed citations

20.

Frymoyer, John W., et al.. (1983). Risk factors in low-back pain. An epidemiological survey.. Journal of Bone and Joint Surgery. 65(2). 213–218. 592 indexed citations breakdown →

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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