Henry Ma

17.3k total citations
132 papers, 2.6k citations indexed

About

Henry Ma is a scholar working on Epidemiology, Pulmonary and Respiratory Medicine and Neurology. According to data from OpenAlex, Henry Ma has authored 132 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 83 papers in Epidemiology, 39 papers in Pulmonary and Respiratory Medicine and 34 papers in Neurology. Recurrent topics in Henry Ma's work include Acute Ischemic Stroke Management (75 papers), Cerebrovascular and Carotid Artery Diseases (36 papers) and Stroke Rehabilitation and Recovery (23 papers). Henry Ma is often cited by papers focused on Acute Ischemic Stroke Management (75 papers), Cerebrovascular and Carotid Artery Diseases (36 papers) and Stroke Rehabilitation and Recovery (23 papers). Henry Ma collaborates with scholars based in Australia, United States and Canada. Henry Ma's co-authors include Geoffrey A. Donnan, Stephen M. Davis, Thanh G. Phan, John Ly, David W. Howells, Leonid Churilov, Mark Parsons, Julianne L. Holloway, Reena Rai and Jason A. Burdick and has published in prestigious journals such as JAMA, Journal of Clinical Investigation and SHILAP Revista de lepidopterología.

In The Last Decade

Henry Ma

123 papers receiving 2.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Henry Ma Australia 29 1.1k 597 489 416 375 132 2.6k
David Chiu United States 26 890 0.8× 819 1.4× 811 1.7× 273 0.7× 162 0.4× 143 3.4k
Tae‐Hee Cho France 26 1.2k 1.1× 522 0.9× 572 1.2× 278 0.7× 476 1.3× 126 2.5k
Robert W. Regenhardt United States 27 1.0k 0.9× 869 1.5× 506 1.0× 406 1.0× 379 1.0× 123 2.6k
Justin F. Fraser United States 38 1.5k 1.4× 987 1.7× 669 1.4× 291 0.7× 347 0.9× 145 3.8k
Sönke Langner Germany 28 526 0.5× 479 0.8× 651 1.3× 173 0.4× 228 0.6× 155 2.7k
Iris Q. Grunwald Germany 29 1.4k 1.3× 1.1k 1.9× 970 2.0× 283 0.7× 171 0.5× 159 2.8k
Christopher P. Kellner United States 36 1.1k 1.0× 2.2k 3.7× 446 0.9× 325 0.8× 258 0.7× 224 3.7k
Suresh Patel United States 30 1.3k 1.2× 2.1k 3.5× 938 1.9× 166 0.4× 278 0.7× 84 3.9k
Allan D. Levi United States 49 346 0.3× 741 1.2× 293 0.6× 631 1.5× 116 0.3× 228 7.3k
Roman Sztajzel Switzerland 28 1.0k 1.0× 813 1.4× 1.1k 2.3× 92 0.2× 90 0.2× 103 2.7k

Countries citing papers authored by Henry Ma

Since Specialization
Citations

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

Fields of papers citing papers by Henry Ma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Henry Ma

This figure shows the co-authorship network connecting the top 25 collaborators of Henry Ma. A scholar is included among the top collaborators of Henry Ma 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 Henry Ma. Henry Ma 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.
Tse, Tamara, Leonid Churilov, Thomas Lindén, et al.. (2025). Trajectory of depressive symptoms in a longitudinal stroke cohort. Journal of Stroke and Cerebrovascular Diseases. 34(3). 108197–108197. 1 indexed citations
2.
Wu, Teddy Y., Henry Zhao, Leonid Churilov, et al.. (2025). Ultra-Early Hematoma Expansion Is Associated With Ongoing Hematoma Growth and Poor Functional Outcome. Stroke. 56(4). 838–847. 3 indexed citations
3.
Vikram, Holenarasipur R., Michael B. Gotway, Rodrigo Cartin‐Ceba, et al.. (2025). An Observational Analysis of a Large Cohort of Pneumocystis jirovecii Pneumonia. Open Forum Infectious Diseases. 12(7). ofaf390–ofaf390. 1 indexed citations
4.
Ma, Henry, et al.. (2024). Estimating the cost of visiting hospital outpatient. BMJ Neurology Open. 6(1). e000576–e000576. 2 indexed citations
5.
6.
Valente, Michael, Andrew Bivard, Bernard Yan, et al.. (2024). Determinants of infarct progression and perfusion core growth in transferred LVO patients from remote regions. Frontiers in Neurology. 15. 1 indexed citations
7.
Rothwell, Peter M., Linxin Li, Shelagh B. Coutts, et al.. (2024). Rapid outpatient transient ischemic attack clinic and stroke service activity during the SARS-CoV-2 pandemic: a multicenter time series analysis. Frontiers in Neurology. 15. 1351769–1351769. 1 indexed citations
8.
Tse, Tamara, Gerald Choon‐Huat Koh, Philip Yap, et al.. (2024). Characterization and individual-level prediction of cognitive state in the first year after ‘mild’ stroke. PLoS ONE. 19(8). e0308103–e0308103. 1 indexed citations
9.
Cadilhac, Dominique A., Joosup Kim, Monique F. Kilkenny, et al.. (2022). Determining the sensitivity of emergency dispatcher and paramedic diagnosis of stroke: statewide registry linkage study. SHILAP Revista de lepidopterología. 3(4). e12750–e12750. 11 indexed citations
10.
Beare, Richard, Grethe Andersen, Henry Ma, et al.. (2022). Can Helicopters Solve the Transport Dilemma for Patients With Symptoms of Large-Vessel Occlusion Stroke in Intermediate Density Areas? A Simulation Model Based on Real Life Data. Frontiers in Neurology. 13. 861259–861259. 4 indexed citations
11.
Zhang, Shenpeng R., Hyun Ah Kim, Hannah X. Chu, et al.. (2021). Large-Scale Multivariate Analysis to Interrogate an Animal Model of Stroke: Novel Insights Into Poststroke Pathology. Stroke. 52(11). 3661–3669. 1 indexed citations
12.
Puri, Chetanya, Nan Huang, Henry Ma, et al.. (2021). A Personalized Bayesian Approach for Early Intervention in Gestational Weight Gain Management Toward Pregnancy Care. IEEE Access. 9. 160946–160957. 2 indexed citations
13.
Bivard, Andrew, Leonid Churilov, Henry Ma, et al.. (2021). Does variability in automated perfusion software outputs for acute ischemic stroke matter? Reanalysis of EXTEND perfusion imaging. CNS Neuroscience & Therapeutics. 28(1). 139–144. 7 indexed citations
14.
Thirugnanachandran, Tharani, Henry Ma, Melissa Mitchell, et al.. (2021). Topographic Evolution of Anterior Cerebral Artery Infarction and Its Impact on Motor Impairment. Cerebrovascular Diseases. 51(2). 248–258.
15.
Phan, Thanh G., Natasha Krishnadas, Vivien Wai Yun Lai, et al.. (2019). Meta-Analysis of Accuracy of the Spot Sign for Predicting Hematoma Growth and Clinical Outcomes. Stroke. 50(8). 2030–2036. 27 indexed citations
16.
Ma, Henry, et al.. (2018). The GLOBE Zika Education and Prevention Project: Citizen Science for Global Health. AGU Fall Meeting Abstracts. 2018. 1 indexed citations
17.
Asgari, Hamed, et al.. (2018). On thermal expansion behavior of invar alloy fabricated by modulated laser powder bed fusion. Materials & Design. 160. 895–905. 79 indexed citations
18.
Kawano, Hiroyuki, Andrew Bivard, Longting Lin, et al.. (2016). Perfusion computed tomography in patients with stroke thrombolysis. Brain. 140(3). aww338–aww338. 28 indexed citations
19.
Singhal, Shaloo, Henry Ma, Ronil V. Chandra, et al.. (2016). Examining Subcortical Infarcts in the Era of Acute Multimodality CT Imaging. Frontiers in Neurology. 7. 220–220. 17 indexed citations
20.
Ma, Henry, Shuji Arakawa, David W. Howells, et al.. (2006). Inflammation following stroke. Journal of Clinical Neuroscience. 13(1). 1–8. 175 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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