Roger Ackroyd

3.8k total citations · 1 hit paper
85 papers, 2.7k citations indexed

About

Roger Ackroyd is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, Roger Ackroyd has authored 85 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 74 papers in Surgery, 38 papers in Pulmonary and Respiratory Medicine and 24 papers in Gastroenterology. Recurrent topics in Roger Ackroyd's work include Esophageal and GI Pathology (32 papers), Esophageal Cancer Research and Treatment (31 papers) and Gastroesophageal reflux and treatments (21 papers). Roger Ackroyd is often cited by papers focused on Esophageal and GI Pathology (32 papers), Esophageal Cancer Research and Treatment (31 papers) and Gastroesophageal reflux and treatments (21 papers). Roger Ackroyd collaborates with scholars based in United Kingdom, Australia and Malaysia. Roger Ackroyd's co-authors include Malcolm Reed, Nicola J. Brown, C Kelty, David I. Watson, Peter G. Devitt, C J Stoddard, David Mitton, Timothy J. Stephenson, Martin Gough and Warwick J. Teague and has published in prestigious journals such as Annals of Surgery, Gut and BMJ.

In The Last Decade

Roger Ackroyd

83 papers receiving 2.6k 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.

The History of Photodetection and Photodynamic Therapy¶

2001 516 citations Roger Ackroyd, Nicola J. Brown et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Roger Ackroyd United Kingdom	25	1.7k	1.3k	635	625	285	85	2.7k
Hyun Joo Lee South Korea	32	728 0.4×	1.1k 0.9×	119 0.2×	452 0.7×	113 0.4×	168	3.0k
Arthur M. Olsen United States	23	1.1k 0.7×	918 0.7×	890 1.4×	321 0.5×	249 0.9×	54	2.2k
Mamoru Tanaka Japan	23	193 0.1×	925 0.7×	108 0.2×	741 1.2×	446 1.6×	104	2.0k
Jia‐Feng Wu Taiwan	31	1.1k 0.7×	547 0.4×	281 0.4×	57 0.1×	164 0.6×	186	3.4k
Yang K. Chen United States	30	2.4k 1.4×	2.1k 1.6×	194 0.3×	249 0.4×	101 0.4×	95	3.4k
Roberto Coppola Italy	32	1.5k 0.9×	870 0.7×	167 0.3×	403 0.6×	77 0.3×	196	3.4k
Byung Ik Kim South Korea	37	1.4k 0.8×	944 0.7×	484 0.8×	59 0.1×	82 0.3×	125	3.6k
Tsutomu Yoshida Japan	25	446 0.3×	637 0.5×	187 0.3×	67 0.1×	586 2.1×	214	2.6k
Daisuke Yoshioka Japan	24	943 0.6×	256 0.2×	91 0.1×	479 0.8×	43 0.2×	189	1.8k
Daniel Couturier France	35	1.6k 0.9×	586 0.4×	865 1.4×	45 0.1×	56 0.2×	226	4.3k

Countries citing papers authored by Roger Ackroyd

Since Specialization

Citations

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

Fields of papers citing papers by Roger Ackroyd

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Roger Ackroyd

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

Akhter, Zainab, Judith Rankin, Dries Ceulemans, et al.. (2019). Pregnancy after bariatric surgery and adverse perinatal outcomes: A systematic review and meta-analysis. PLoS Medicine. 16(8). e1002866–e1002866. 125 indexed citations

Ackroyd, Roger, et al.. (2012). A Study Examining the Complications Associated with Gastric Banding. Obesity Surgery. 23(1). 56–59. 24 indexed citations

Pereira, Stephen P., Lakshmana Ayaru, Roger Ackroyd, et al.. (2010). The pharmacokinetics and safety of porfimer after repeated administration 30–45 days apart to patients undergoing photodynamic therapy. Alimentary Pharmacology & Therapeutics. 32(6). 821–827. 10 indexed citations

Khan, Mansoor A., et al.. (2010). Randomized controlled trial of laparoscopic anterior versus posterior fundoplication for gastro‐oesophageal reflux disease. ANZ Journal of Surgery. 80(7-8). 500–505. 17 indexed citations

Bright, Tim, David I. Watson, William Tam, et al.. (2008). Prospective Randomized Trial of Argon Plasma Coagulation Ablation Versus Endoscopic Surveillance of Barrett’s Esophagus in Patients Treated with Antisecretory Medication. Digestive Diseases and Sciences. 54(12). 2606–2611. 18 indexed citations

Rajendra, Shanmugarajah, et al.. (2007). Helicobacter pylori, Ethnicity, and the Gastroesophageal Reflux Disease Spectrum: A Study from the East. Helicobacter. 12(2). 177–183. 48 indexed citations

Alam, Imran, et al.. (2006). Laparoscopic Gastric Bypass in a Patient with Malrotation of the Intestine. Obesity Surgery. 16(6). 777–779. 11 indexed citations

Ackroyd, Roger, J Mouïel, Jean‐Marc Chevallier, & F. Daoud. (2006). Cost-Effectiveness and Budget Impact of Obesity Surgery in Patients With Type-2 Diabetes in Three European Countries. Obesity Surgery. 16(11). 1488–1503. 75 indexed citations

Mitton, David & Roger Ackroyd. (2006). Photodynamic therapy for Barrett's oesophagus and oesophageal carcinoma—How I do it. Photodiagnosis and Photodynamic Therapy. 3(2). 96–98. 3 indexed citations

10.

Gough, Martin, Roger Ackroyd, Ali W. Majeed, & Nigel C. Bird. (2005). Prediction of Malignant Potential in Reflux Disease: Are Cytokine Polymorphisms Important?. The American Journal of Gastroenterology. 100(5). 1012–1018. 25 indexed citations

11.

Ackroyd, Roger, et al.. (2005). Argon plasma coagulation ablation of Barrett's oesophagus. Scandinavian Journal of Gastroenterology. 40(6). 617–628. 8 indexed citations

12.

Mitton, David & Roger Ackroyd. (2004). Photodynamic therapy in oesophageal carcinoma: an overview. Photochemical & Photobiological Sciences. 3(9). 839–850. 14 indexed citations

13.

Ackroyd, Roger, et al.. (2004). Barrett's oesophagus and photodynamic therapy (PDT). Photodiagnosis and Photodynamic Therapy. 1(3). 203–209. 5 indexed citations

14.

Mitton, David, et al.. (2004). Photodynamic therapy and photodiagnosis for Barrett's oesophagus and early oesophageal carcinoma. Photodiagnosis and Photodynamic Therapy. 1(4). 319–334. 4 indexed citations

15.

Ackroyd, Roger, William Tam, Mark Schoeman, Peter G. Devitt, & David I. Watson. (2004). Prospective randomized controlled trial of argon plasma coagulation ablation vs. endoscopic surveillance of patients with Barrett's esophagus after antireflux surgery. Gastrointestinal Endoscopy. 59(1). 1–7. 59 indexed citations

16.

Gunasekera, Rohan, Roger Ackroyd, & C J Stoddard. (2003). Complete rectal obstruction due to ischaemia following elective abdominal aortic aneurysm surgery. The Surgeon. 1(2). 114–117. 1 indexed citations

17.

Tam, William, Roger Ackroyd, Mark Schoeman, P. Devitt, & David I. Watson. (2002). Randomised controlled trial of ablation of Barrett's oesophagus with argon plasma coagulation in postfundoplication patients: 1-year data. Journal of Gastroenterology and Hepatology. 17. 1 indexed citations

18.

Ackroyd, Roger, et al.. (2000). Photodynamic therapy for dysplastic Barrett's oesophagus: a prospective, double blind, randomised, placebo controlled trial. Gut. 47(5). 612–617. 148 indexed citations

19.

Ackroyd, Roger, et al.. (2000). Aminolevulinic acid-induced photodynamic therapy: safe and effective ablation of dysplasia in Barrett’s esophagus. Diseases of the Esophagus. 13(1). 18–22. 25 indexed citations

20.

Ackroyd, Roger, et al.. (1997). Surveillance of Barrett’s esophagus: A need for guidelines?. Diseases of the Esophagus. 10(3). 185–189. 16 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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