Christopher Rajkumar

2.2k total citations · 1 hit paper
39 papers, 573 citations indexed

About

Christopher Rajkumar is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Christopher Rajkumar has authored 39 papers receiving a total of 573 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Cardiology and Cardiovascular Medicine, 17 papers in Surgery and 17 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Christopher Rajkumar's work include Cardiac Imaging and Diagnostics (16 papers), Coronary Interventions and Diagnostics (12 papers) and Acute Myocardial Infarction Research (7 papers). Christopher Rajkumar is often cited by papers focused on Cardiac Imaging and Diagnostics (16 papers), Coronary Interventions and Diagnostics (12 papers) and Acute Myocardial Infarction Research (7 papers). Christopher Rajkumar collaborates with scholars based in United Kingdom, United States and Australia. Christopher Rajkumar's co-authors include Dárrel P. Francis, Rasha Al‐Lamee, Matthew Shun‐Shin, Alexandra N. Nowbar, James P. Howard, Michael Foley, Graham D. Cole, Sayan Sen, Yousif Ahmad and Ricardo Petraco and has published in prestigious journals such as Blood, Journal of the American College of Cardiology and European Heart Journal.

In The Last Decade

Christopher Rajkumar

32 papers receiving 563 citations

Hit Papers

Coronary flow reserve and cardiovascular outcomes: a syst... 2021 2026 2022 2024 2021 50 100 150
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.

  1. Coronary flow reserve and cardiovascular outcomes: a systematic review and meta-analysis
    2021 154 citations Mihir A Kelshiker, Henry Seligman et al. European Heart Journal profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Christopher Rajkumar United Kingdom 9 367 295 226 48 36 39 573
Paulo Cury Rezende Brazil 14 339 0.9× 233 0.8× 159 0.7× 29 0.6× 77 2.1× 61 502
Oriana Scala Italy 11 222 0.6× 150 0.5× 86 0.4× 94 2.0× 62 1.7× 19 432
Eduardo Gomes Lima Brazil 13 362 1.0× 302 1.0× 136 0.6× 18 0.4× 75 2.1× 66 552
Farah Z. Dawood United States 10 572 1.6× 155 0.5× 219 1.0× 65 1.4× 46 1.3× 14 751
Erik Gjertsen Norway 15 720 2.0× 369 1.3× 187 0.8× 69 1.4× 26 0.7× 28 840
Mayanna Lund New Zealand 12 528 1.4× 86 0.3× 100 0.4× 12 0.3× 45 1.3× 37 602
Sylvia Otto Germany 12 228 0.6× 182 0.6× 113 0.5× 11 0.2× 16 0.4× 38 368
A Ferreira Portugal 16 889 2.4× 243 0.8× 340 1.5× 16 0.3× 31 0.9× 136 1.1k
Kaushang Gandhi United States 15 190 0.5× 140 0.5× 43 0.2× 39 0.8× 36 1.0× 23 382
Jo Jo Hai Hong Kong 17 598 1.6× 80 0.3× 65 0.3× 25 0.5× 38 1.1× 53 750

Countries citing papers authored by Christopher Rajkumar

Since Specialization
Citations

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

Fields of papers citing papers by Christopher Rajkumar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Christopher Rajkumar

This figure shows the co-authorship network connecting the top 25 collaborators of Christopher Rajkumar. A scholar is included among the top collaborators of Christopher Rajkumar 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 Christopher Rajkumar. Christopher Rajkumar 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.
Ojha, Utkarsh, Muhammad Mohsin, Fiyyaz Ahmed‐Jushuf, et al.. (2025). Safety, Efficacy, and Effectiveness of Coronary Sinus Reducer Implantation in Refractory Angina. JACC: Cardiovascular Interventions. 18(15). 1864–1877.
2.
Hammond‐Haley, Matthew, Fiyyaz Ahmed‐Jushuf, Christopher Rajkumar, et al.. (2024). A systematic review of enrolment criteria and treatment efficacy for microvascular angina. EuroIntervention. 21(1). 46–57. 1 indexed citations
3.
Foley, Michael, Christopher Rajkumar, Fiyyaz Ahmed‐Jushuf, et al.. (2024). A double-blind, randomised, placebo-controlled trial of the coronary sinus Reducer in refractory angina: design and rationale of the ORBITA-COSMIC trial. EuroIntervention. 20(3). e216–e223. 2 indexed citations
4.
Naqvi, Syed Arsalan Ahmed, Mahmoud El Hajj, Christopher Rajkumar, et al.. (2023). Cardiovascular (CV) Mortality Among Adults Diagnosed with Leukemias: A Retrospective Cohort Study. Blood. 142(Supplement 1). 2426–2426. 2 indexed citations
5.
Rajkumar, Christopher, et al.. (2023). Customer Experience through Virtual Reality Online Shopping. International Journal for Research in Applied Science and Engineering Technology. 11(1). 473–481.
6.
Rajkumar, Christopher, et al.. (2023). Machine learning based monitoring of worker’s health and work place using IoT. AIP conference proceedings. 2963. 20209–20209. 1 indexed citations
7.
Ganesananthan, Sashiananthan, Christopher Rajkumar, Michael Foley, et al.. (2022). Cardiopulmonary exercise testing and efficacy of percutaneous coronary intervention: a substudy of the ORBITA trial. European Heart Journal. 43(33). 3132–3145. 13 indexed citations
8.
Kelshiker, Mihir A, Henry Seligman, James P. Howard, et al.. (2022). CORONARY FLOW RESERVE AND CARDIOVASCULAR OUTCOMES: A SYSTEMATIC REVIEW AND META-ANALYSIS. Journal of the American College of Cardiology. 79(9). 989–989. 3 indexed citations
9.
Kelshiker, Mihir A, Henry Seligman, James P. Howard, et al.. (2021). Coronary flow reserve and cardiovascular outcomes: a systematic review and meta-analysis. European Heart Journal. 43(16). 1582–1593. 154 indexed citations breakdown →
10.
Foley, Michael, Christopher Rajkumar, Matthew Shun‐Shin, et al.. (2021). Achieving Optimal Medical Therapy: Insights From the ORBITA Trial. Journal of the American Heart Association. 10(3). e017381–e017381. 10 indexed citations
11.
McCreanor, Victoria, Alexandra N. Nowbar, Christopher Rajkumar, et al.. (2021). Cost-effectiveness analysis of percutaneous coronary intervention for single-vessel coronary artery disease: an economic evaluation of the ORBITA trial. BMJ Open. 11(2). e044054–e044054. 8 indexed citations
12.
Howard, James P., Frances A. Wood, Judith A. Finegold, et al.. (2021). Side Effect Patterns in a Crossover Trial of Statin, Placebo, and No Treatment. Journal of the American College of Cardiology. 78(12). 1210–1222. 116 indexed citations
13.
Hartley, Adam, Matthew Shun‐Shin, Christopher Rajkumar, et al.. (2021). The Placebo-Controlled Effect of Percutaneous Coronary Intervention on Exercise Induced Changes in Anti-Malondialdehyde-LDL Antibody Levels in Stable Coronary Artery Disease: A Substudy of the ORBITA Trial. Frontiers in Cardiovascular Medicine. 8. 757030–757030. 2 indexed citations
14.
Nowbar, Alexandra N., Christopher Rajkumar, Rasha Al‐Lamee, & Dárrel P. Francis. (2021). Controversies in revascularisation for stable coronary artery disease. Clinical Medicine. 21(2). 114–118. 4 indexed citations
15.
Al‐Lamee, Rasha, Michael Foley, Christopher Rajkumar, & Alexandra N. Nowbar. (2021). Recruitment for placebo-controlled trials of interventional procedures: a patient-centred approach. EuroIntervention. 17(12). e963–e965. 1 indexed citations
16.
Al‐Lamee, Rasha, Christopher Rajkumar, Sashiananthan Ganesananthan, & Allen Jeremias. (2021). Optimising physiological endpoints of percutaneous coronary intervention. EuroIntervention. 16(18). e1470–e1483. 6 indexed citations
17.
Jabbour, Richard J., Henry Seligman, Christopher Rajkumar, et al.. (2020). Balloon-Assisted Tracking (BAT) of an Uncrossable Aortic Valve During Transcatheter Aortic Valve Implantation. Cardiovascular revascularization medicine. 21(11). 33–35.
18.
Sharp, Alexander, S.M. Afzal Sohaib, Matthew Shun‐Shin, et al.. (2019). Improving haemodynamic optimization of cardiac resynchronization therapy for heart failure*. Physiological Measurement. 40(4). 04NT01–04NT01.
19.
Rajkumar, Christopher, Norman Qureshi, Fu Siong Ng, Vasileios Panoulas, & Phang Boon Lim. (2017). Adenosine induced ventricular fibrillation in a structurally normal heart: a case report. Journal of Medical Case Reports. 11(1). 21–21. 4 indexed citations
20.
Rajkumar, Christopher, Simon Claridge, Tom Jackson, et al.. (2016). Diagnosis and management of iatrogenic cardiac perforation caused by pacemaker and defibrillator leads. EP Europace. 19(6). euw074–euw074. 41 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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