Hitoshi Aiyama

867 total citations
31 papers, 482 citations indexed

About

Hitoshi Aiyama is a scholar working on Pulmonary and Respiratory Medicine, Genetics and Neurology. According to data from OpenAlex, Hitoshi Aiyama has authored 31 papers receiving a total of 482 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Pulmonary and Respiratory Medicine, 11 papers in Genetics and 10 papers in Neurology. Recurrent topics in Hitoshi Aiyama's work include Glioma Diagnosis and Treatment (11 papers), Brain Metastases and Treatment (11 papers) and Meningioma and schwannoma management (8 papers). Hitoshi Aiyama is often cited by papers focused on Glioma Diagnosis and Treatment (11 papers), Brain Metastases and Treatment (11 papers) and Meningioma and schwannoma management (8 papers). Hitoshi Aiyama collaborates with scholars based in Japan, United States and Taiwan. Hitoshi Aiyama's co-authors include Masaaki Yamamoto, Kengo Nishimura, Chikayuki Ochiai, Hirotaka Ito, Akio Morita, Toshikazu Kimura, Yoshinori Higuchi, Yasunori Sato, Shigeo Sora and Shinya Watanabe and has published in prestigious journals such as Journal of neurosurgery, International Journal of Radiation Oncology*Biology*Physics and Neurosurgery.

In The Last Decade

Hitoshi Aiyama

27 papers receiving 477 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hitoshi Aiyama Japan	14	226	136	120	119	104	31	482
B. A. Lulu United States	14	215 1.0×	202 1.5×	238 2.0×	263 2.2×	209 2.0×	21	824
Costantino De Renzis Italy	13	161 0.7×	136 1.0×	119 1.0×	115 1.0×	174 1.7×	26	489
Othman Bin-Alamer United States	12	128 0.6×	125 0.9×	94 0.8×	137 1.2×	111 1.1×	68	396
W. Saringer Austria	16	98 0.4×	79 0.6×	169 1.4×	375 3.2×	144 1.4×	21	629
Ritu Shah United States	7	113 0.5×	140 1.0×	36 0.3×	39 0.3×	48 0.5×	18	312
Montgomery Martin Canada	7	139 0.6×	75 0.6×	83 0.7×	13 0.1×	84 0.8×	12	300
Paul G. Pagnini United States	10	52 0.2×	70 0.5×	134 1.1×	109 0.9×	168 1.6×	18	302
Kim O. Learned United States	13	73 0.3×	111 0.8×	107 0.9×	277 2.3×	193 1.9×	38	553
Wael Hassaneen United States	11	77 0.3×	164 1.2×	89 0.7×	44 0.4×	107 1.0×	29	386
Riyadh Alokaili Saudi Arabia	10	113 0.5×	207 1.5×	175 1.5×	88 0.7×	70 0.7×	23	634

Countries citing papers authored by Hitoshi Aiyama

Since Specialization

Citations

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

Fields of papers citing papers by Hitoshi Aiyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hitoshi Aiyama

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

Yanaka, Kiyoyuki, et al.. (2024). Symptomatic Cerebellar Cyst Formation after Foramen Magnum Meningioma Removal: A Case Report. Asian Journal of Neurosurgery. 19(3). 531–535.

Yanaka, Kiyoyuki, et al.. (2024). Traumatic Middle Meningeal Artery Aneurysm: A Rare Cause of Recurrent Acute Epidural Hematoma. A Case Report. Asian Journal of Neurosurgery. 19(4). 825–828.

Yanaka, Kiyoyuki, Hitoshi Aiyama, Nobuyuki Takahashi, et al.. (2024). Spontaneous asymptomatic common carotid artery dissection resembling a carotid web: illustrative case. Journal of Neurosurgery Case Lessons. 8(11). 2 indexed citations

Yanaka, Kiyoyuki, et al.. (2024). Significance of upper cervical epidural venous engorgement on head computed tomography in the initial diagnosis of spontaneous intracranial hypotension: patient series. Journal of Neurosurgery Case Lessons. 7(9).

Yomo, Shoji, Takeshi Kondoh, Toru Serizawa, et al.. (2020). Salvage gamma knife radiosurgery for active brain metastases from small-cell lung cancer after whole-brain radiation therapy: a retrospective multi-institutional study (JLGK1701). Journal of Neuro-Oncology. 147(1). 67–76. 8 indexed citations

Yamamoto, Masaaki, Hitoshi Aiyama, Takao Koiso, et al.. (2019). Applicability and limitations of a recently-proposed prognostic grading metric, initial brain metastasis velocity, for brain metastasis patients undergoing stereotactic radiosurgery. Journal of Neuro-Oncology. 143(3). 613–621. 17 indexed citations

Watanabe, Shinya, Masaaki Yamamoto, Takuya Kawabe, et al.. (2019). Long-term follow-up results of stereotactic radiosurgery for vestibular schwannomas larger than 8 cc. Acta Neurochirurgica. 161(7). 1457–1465. 12 indexed citations

Watanabe, Shinya, Noriyuki Kato, Masayuki Sato, et al.. (2019). Treatment Outcomes of Burr-Hole Surgery for Chronic Subdural Hematoma in the Elderly Living Beyond Life Expectancy: A Study Comparing Cure, Recurrence, and Complications in Patients Aged ≥80 Years versus ≤79 Years. World Neurosurgery. 132. e812–e819. 11 indexed citations

Yamamoto, Masaaki, Hitoshi Aiyama, Takao Koiso, et al.. (2018). Validity of a Recently Proposed Prognostic Grading Index, Brain Metastasis Velocity, for Patients With Brain Metastasis Undergoing Multiple Radiosurgical Procedures. International Journal of Radiation Oncology*Biology*Physics. 103(3). 631–637. 24 indexed citations

10.

Higuchi, Yoshinori, Masaaki Yamamoto, Toru Serizawa, et al.. (2018). Modern management for brain metastasis patients using stereotactic radiosurgery: literature review and the authors’ gamma knife treatment experiences. Cancer Management and Research. Volume 10. 1889–1899. 26 indexed citations

11.

Aiyama, Hitoshi, Masaaki Yamamoto, Takuya Kawabe, et al.. (2018). Complications after stereotactic radiosurgery for brain metastases: Incidences, correlating factors, treatments and outcomes. Radiotherapy and Oncology. 129(2). 364–369. 14 indexed citations

12.

Joshi, Rushikesh S., Brian R. Hirshman, Mir Amaan Ali, et al.. (2018). Prognostic Importance of Cumulative Intracranial Tumor Volume in Patients with Gastrointestinal Brain Metastasis Treated with Stereotactic Radiosurgery. World Neurosurgery. 121. e747–e754. 12 indexed citations

13.

Yamamoto, Masaaki, Yoshinori Higuchi, Toru Serizawa, et al.. (2018). Three-stage Gamma Knife treatment for metastatic brain tumors larger than 10 cm3: a 2-institute study including re-analyses of earlier results using competing risk analysis. Journal of neurosurgery. 129(Suppl1). 77–85. 15 indexed citations

14.

Ali, Mir Amaan, Brian R. Hirshman, Bayard Wilson, et al.. (2017). Survival Patterns of 5750 Stereotactic Radiosurgery–Treated Patients with Brain Metastasis as a Function of the Number of Lesions. World Neurosurgery. 107. 944–951.e1. 31 indexed citations

15.

Ali, Mir Amaan, Brian R. Hirshman, Bayard Wilson, et al.. (2017). Improving the Prognostic Value of Disease-Specific Graded Prognostic Assessment Model for Renal Cell Carcinoma by Incorporation of Cumulative Intracranial Tumor Volume. World Neurosurgery. 108. 151–156. 20 indexed citations

16.

Nakai, Kei, Tetsuya Yamamoto, Hitoshi Aiyama, et al.. (2011). Boron neutron capture therapy combined with fractionated photon irradiation for glioblastoma: A recursive partitioning analysis of BNCT patients. Applied Radiation and Isotopes. 69(12). 1790–1792. 27 indexed citations

17.

Aiyama, Hitoshi, Kei Nakai, Tetsuya Yamamoto, et al.. (2011). A clinical trial protocol for second line treatment of malignant brain tumors with BNCT at University of Tsukuba. Applied Radiation and Isotopes. 69(12). 1819–1822. 21 indexed citations

18.

Yamamoto, Tetsuya, Kei Nakai, Tadashi Nariai, et al.. (2011). The status of Tsukuba BNCT trial: BPA-based boron neutron capture therapy combined with X-ray irradiation. Applied Radiation and Isotopes. 69(12). 1817–1818. 27 indexed citations

19.

Kimura, Toshikazu, Akio Morita, Kengo Nishimura, et al.. (2009). SIMULATION OF AND TRAINING FOR CEREBRAL ANEURYSM CLIPPING WITH 3-DIMENSIONAL MODELS. Neurosurgery. 65(4). 719–726. 115 indexed citations

20.

Aiyama, Hitoshi, Shinsuke Suzuki, Takayuki Hirano, et al.. (2009). [Case of enlargement of an intradiploic epidermoid cyst by a head contusion].. PubMed. 61(6). 707–10. 2 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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