Hakan Ay

13.7k total citations
95 papers, 5.5k citations indexed

About

Hakan Ay is a scholar working on Epidemiology, Pulmonary and Respiratory Medicine and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Hakan Ay has authored 95 papers receiving a total of 5.5k indexed citations (citations by other indexed papers that have themselves been cited), including 56 papers in Epidemiology, 46 papers in Pulmonary and Respiratory Medicine and 26 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Hakan Ay's work include Acute Ischemic Stroke Management (56 papers), Cerebrovascular and Carotid Artery Diseases (39 papers) and Venous Thromboembolism Diagnosis and Management (12 papers). Hakan Ay is often cited by papers focused on Acute Ischemic Stroke Management (56 papers), Cerebrovascular and Carotid Artery Diseases (39 papers) and Venous Thromboembolism Diagnosis and Management (12 papers). Hakan Ay collaborates with scholars based in United States, Türkiye and South Korea. Hakan Ay's co-authors include Walter J. Koroshetz, A. Gregory Sorensen, Karen L. Furie, Aneesh B. Singhal, Ethem Murat Arsava, Wade S. Smith, Pamela W. Schaefer, Ramón González, Lee H. Schwamm and İlknur Ay and has published in prestigious journals such as Circulation, Annals of Internal Medicine and Neurology.

In The Last Decade

Hakan Ay

93 papers receiving 5.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hakan Ay United States 39 3.2k 2.3k 1.5k 1.0k 927 95 5.5k
Adrià Arboix Spain 53 3.2k 1.0× 2.4k 1.0× 1.7k 1.1× 1.3k 1.3× 381 0.4× 199 6.4k
E. Bernd Ringelstein Germany 43 2.2k 0.7× 2.5k 1.1× 1.5k 1.0× 1.6k 1.5× 719 0.8× 123 5.7k
Natalia S. Rost United States 43 3.7k 1.1× 1.5k 0.7× 2.1k 1.4× 777 0.7× 597 0.6× 183 6.5k
Robert J. Wityk United States 49 3.6k 1.1× 3.3k 1.4× 2.7k 1.8× 1.1k 1.1× 721 0.8× 112 8.1k
Dong‐Wha Kang South Korea 53 4.7k 1.5× 4.2k 1.8× 3.5k 2.3× 1.3k 1.3× 1.3k 1.4× 264 8.9k
Shyam Prabhakaran United States 42 4.3k 1.4× 2.0k 0.9× 2.5k 1.6× 1.1k 1.0× 470 0.5× 274 7.0k
Jukka Putaala Finland 42 3.5k 1.1× 1.7k 0.8× 2.4k 1.6× 1.4k 1.3× 305 0.3× 231 6.2k
Martin Grond Germany 35 4.0k 1.3× 1.7k 0.7× 1.9k 1.2× 783 0.8× 503 0.5× 108 5.7k
Moon‐Ku Han South Korea 38 2.2k 0.7× 1.3k 0.6× 1.3k 0.8× 762 0.7× 532 0.6× 222 4.1k
Guy Rordorf United States 41 2.5k 0.8× 1.9k 0.8× 2.9k 1.9× 656 0.6× 1.3k 1.3× 73 5.8k

Countries citing papers authored by Hakan Ay

Since Specialization
Citations

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

Fields of papers citing papers by Hakan Ay

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hakan Ay

This figure shows the co-authorship network connecting the top 25 collaborators of Hakan Ay. A scholar is included among the top collaborators of Hakan Ay 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 Hakan Ay. Hakan Ay 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.
Layton, J. Bradley, Colin Anderson‐Smits, Hakan Ay, et al.. (2025). A Comparative Real‐World Study Evaluating the Safety of Immune Globulin Infusion (Human) 10% Solution and Other Intravenous Immunoglobulin Therapies for the Treatment of Chronic Inflammatory Demyelinating Polyradiculoneuropathy. Pharmacoepidemiology and Drug Safety. 34(3). e70124–e70124. 1 indexed citations
2.
3.
Li, Zhaoyang, András Nagy, Dirk Lindner, et al.. (2024). Tolerability and Safety of Large-Volume Hyaluronidase-Facilitated Subcutaneous Immunoglobulin 10% Administered with or without Dose Ramp-Up: A Phase 1 Study in Healthy Participants. Journal of Clinical Immunology. 44(7). 148–148. 1 indexed citations
4.
Wright, Clinton B., Alexander P. Auchus, Alan J. Lerner, et al.. (2021). Effect of Intensive Versus Standard Blood Pressure Control on Stroke Subtypes. Hypertension. 77(4). 1391–1398. 3 indexed citations
5.
Jeon, Pyoung, Young-Wook Kim, Dong‐Ik Kim, et al.. (2021). White matter hyperintensity determines ischemic stroke severity in symptomatic carotid artery stenosis. Neurological Sciences. 42(8). 3367–3374. 12 indexed citations
6.
Winzeck, Stefan, Steven J. T. Mocking, Mark J.R.J. Bouts, et al.. (2019). Ensemble of Convolutional Neural Networks Improves Automated Segmentation of Acute Ischemic Lesions Using Multiparametric Diffusion-Weighted MRI. American Journal of Neuroradiology. 40(6). 938–945. 38 indexed citations
7.
Rocha, Eva, Ruijun Ji, Hakan Ay, et al.. (2019). Reduced Ischemic Lesion Growth with Heparin in Acute Ischemic Stroke. Journal of Stroke and Cerebrovascular Diseases. 28(6). 1500–1508. 4 indexed citations
8.
Arsava, Ethem Murat, Johanna Helenius, Mine Hayriye Sorgun, et al.. (2017). Assessment of the Predictive Validity of Etiologic Stroke Classification. JAMA Neurology. 74(4). 419–419. 66 indexed citations
9.
Park, Kwang‐Yeol, İlknur Ay, J. Caceres, et al.. (2017). New biomarker for acute ischaemic stroke: plasma glycogen phosphorylase isoenzyme BB. Journal of Neurology Neurosurgery & Psychiatry. 89(4). 404–409. 15 indexed citations
10.
Mawet, Jérôme, Katharina Eikermann‐Haerter, Kwang‐Yeol Park, et al.. (2015). Sensitivity to acute cerebral ischemic injury in migraineurs. Neurology. 85(22). 1945–1949. 26 indexed citations
11.
12.
Maas, Matthew B., Karen L. Furie, Michael H. Lev, et al.. (2009). National Institutes of Health Stroke Scale Score Is Poorly Predictive of Proximal Occlusion in Acute Cerebral Ischemia. Stroke. 40(9). 2988–2993. 113 indexed citations
13.
Maas, Matthew B., Michael H. Lev, Hakan Ay, et al.. (2009). Collateral Vessels on CT Angiography Predict Outcome in Acute Ischemic Stroke. Stroke. 40(9). 3001–3005. 288 indexed citations
14.
Wang, Harris H., Nina M. Menezes, Mingwang Zhu, et al.. (2008). Physiological noise in MR images: An indicator of the tissue response to ischemia?. Journal of Magnetic Resonance Imaging. 27(4). 866–871. 14 indexed citations
15.
Saver, Jeffrey L., Chelsea S. Kidwell, Gregory W. Albers, et al.. (2007). A multicenter pooled, patient-level data analysis of diffusion-weighted MRI in TIA patients. Stroke. 38(2). 463–463. 27 indexed citations
16.
Benner, Thomas, Hakan Ay, Mingwang Zhu, et al.. (2006). Effect of using local arterial input functions on cerebral blood flow estimation. Journal of Magnetic Resonance Imaging. 24(1). 57–65. 27 indexed citations
17.
Benner, Thomas, Hakan Ay, Mingwang Zhu, et al.. (2006). Automated perfusion‐weighted MRI using localized arterial input functions. Journal of Magnetic Resonance Imaging. 24(5). 1133–1139. 35 indexed citations
18.
Ay, Hakan, Karen L. Furie, Aneesh B. Singhal, et al.. (2005). An evidence‐based causative classification system for acute ischemic stroke. Annals of Neurology. 58(5). 688–697. 481 indexed citations
19.
Ay, Hakan, Jamary Oliveira‐Filho, Ferdinando S. Buonanno, et al.. (2002). ‘Footprints’ of Transient Ischemic Attacks: A Diffusion-Weighted MRI Study. Cerebrovascular Diseases. 14(3-4). 177–186. 84 indexed citations
20.
Ay, Hakan, et al.. (1999). Potential Usefulness of Basic Fibroblast Growth Factor as a Treatment for Stroke. Cerebrovascular Diseases. 9(3). 131–135. 80 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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