Brian O’Sullivan

55.4k total citations · 16 hit papers
591 papers, 33.9k citations indexed

About

Brian O’Sullivan is a scholar working on Pulmonary and Respiratory Medicine, Otorhinolaryngology and Surgery. According to data from OpenAlex, Brian O’Sullivan has authored 591 papers receiving a total of 33.9k indexed citations (citations by other indexed papers that have themselves been cited), including 294 papers in Pulmonary and Respiratory Medicine, 260 papers in Otorhinolaryngology and 200 papers in Surgery. Recurrent topics in Brian O’Sullivan's work include Head and Neck Cancer Studies (259 papers), Sarcoma Diagnosis and Treatment (136 papers) and Head and Neck Surgical Oncology (64 papers). Brian O’Sullivan is often cited by papers focused on Head and Neck Cancer Studies (259 papers), Sarcoma Diagnosis and Treatment (136 papers) and Head and Neck Surgical Oncology (64 papers). Brian O’Sullivan collaborates with scholars based in Canada, United States and United Kingdom. Brian O’Sullivan's co-authors include Charles Catton, Shao Hui Huang, Jay S. Wunder, Steven D. Freedman, Robert S. Bell, Aileen M. Davis, John Waldron, Rita A. Kandel, Fei‐Fei Liu and Jolie Ringash and has published in prestigious journals such as New England Journal of Medicine, The Lancet and JAMA.

In The Last Decade

Brian O’Sullivan

574 papers receiving 33.3k citations

Hit Papers

Preoperative versus postoperative radiotherapy in soft-ti... 2002 2026 2010 2018 2002 2017 2009 2007 2006 250 500 750 1000
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. Preoperative versus postoperative radiotherapy in soft-tissue sarcoma of the limbs: a randomised trial
    2002 1.1k citations Brian O’Sullivan, Aileen M. Davis et al. profile →
  2. Head and neck cancers—major changes in the American Joint Committee on cancer eighth edition cancer staging manual
    2017 1.1k citations Brian O’Sullivan et al. profile →
  3. Cystic fibrosis
    2009 968 citations Brian O’Sullivan et al. profile →
  4. Cystic Fibrosis Pulmonary Guidelines
    2007 765 citations Patrick A. Flume, Brian O’Sullivan et al. American Journal of Respiratory and Critical Care Medicine profile →
  5. Hyperfractionated or accelerated radiotherapy in head and neck cancer: a meta-analysis
    2006 752 citations Jean Bourhis, Jacques Bernier et al. profile →
  6. Caspase 3–mediated stimulation of tumor cell repopulation during cancer radiotherapy
    2011 706 citations Wei Shi, Fei‐Fei Liu et al. profile →
  7. Expanding global access to radiotherapy
    2015 683 citations Brian O’Sullivan, Mary Gospodarowicz et al. The Lancet Oncology profile →
  8. Prognostic Significance of p16 INK4A and Human Papillomavirus in Patients With Oropharyngeal Cancer Treated on TROG 02.02 Phase III Trial
    2010 571 citations Danny Rischin, Richard J. Young et al. Journal of Clinical Oncology profile →
  9. Critical Impact of Radiotherapy Protocol Compliance and Quality in the Treatment of Advanced Head and Neck Cancer: Results From TROG 02.02
    2010 548 citations Lester J. Peters, Brian O’Sullivan et al. Journal of Clinical Oncology profile →
  10. Delineation of the neck node levels for head and neck tumors: A 2013 update. DAHANCA, EORTC, HKNPCSG, NCIC CTG, NCRI, RTOG, TROG consensus guidelines
    2013 525 citations Quynh‐Thu Le, Brian O’Sullivan et al. Radiotherapy and Oncology profile →
  11. Late radiation morbidity following randomization to preoperative versus postoperative radiotherapy in extremity soft tissue sarcoma
    2005 503 citations Aileen M. Davis, Brian O’Sullivan et al. Radiotherapy and Oncology profile →
  12. Overview of the 8th Edition TNM Classification for Head and Neck Cancer
    2017 457 citations Shao Hui Huang, Brian O’Sullivan profile →
  13. Deintensification Candidate Subgroups in Human Papillomavirus–Related Oropharyngeal Cancer According to Minimal Risk of Distant Metastasis
    2013 438 citations Brian O’Sullivan, Shao Hui Huang et al. Journal of Clinical Oncology profile →
  14. CT-based delineation of organs at risk in the head and neck region: DAHANCA, EORTC, GORTEC, HKNPCSG, NCIC CTG, NCRI, NRG Oncology and TROG consensus guidelines
    2015 422 citations Jean Bourhis, Brian O’Sullivan et al. Radiotherapy and Oncology profile →
  15. Refining American Joint Committee on Cancer/Union for International Cancer Control TNM Stage and Prognostic Groups for Human Papillomavirus–Related Oropharyngeal Carcinomas
    2015 301 citations Shao Hui Huang, Wei Xu et al. Journal of Clinical Oncology profile →
  16. Proposal for the 8th edition of the AJCC/UICC staging system for nasopharyngeal cancer in the era of intensity‐modulated radiotherapy
    2015 253 citations Brian O’Sullivan, Wei Xu et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Brian O’Sullivan Canada 90 16.5k 11.2k 11.0k 10.9k 4.5k 591 33.9k
Jatin P. Shah United States 106 6.3k 0.4× 12.6k 1.1× 19.0k 1.7× 14.1k 1.3× 3.9k 0.9× 582 36.5k
David I. Rosenthal United States 79 8.5k 0.5× 6.9k 0.6× 9.1k 0.8× 12.7k 1.2× 2.4k 0.5× 518 24.8k
Randal S. Weber United States 78 7.8k 0.5× 10.1k 0.9× 14.8k 1.3× 16.1k 1.5× 3.8k 0.9× 405 28.7k
Luigi Mariani Italy 84 8.8k 0.5× 10.6k 0.9× 7.5k 0.7× 1.4k 0.1× 6.6k 1.5× 451 32.0k
Jean Bourhis France 77 12.7k 0.8× 9.2k 0.8× 9.4k 0.9× 13.4k 1.2× 4.4k 1.0× 582 30.7k
Benny Zee Hong Kong 73 6.0k 0.4× 9.8k 0.9× 6.0k 0.5× 4.2k 0.4× 2.6k 0.6× 324 23.2k
Quynh‐Thu Le United States 79 7.0k 0.4× 7.8k 0.7× 5.8k 0.5× 7.4k 0.7× 6.7k 1.5× 461 25.4k
Laurence Collette Belgium 79 15.2k 0.9× 12.7k 1.1× 11.3k 1.0× 1.6k 0.1× 2.2k 0.5× 317 31.6k
C. René Leemans Netherlands 81 8.5k 0.5× 11.7k 1.0× 9.1k 0.8× 14.2k 1.3× 6.4k 1.4× 532 33.8k
Valerie W. Rusch United States 116 39.0k 2.4× 16.4k 1.5× 9.9k 0.9× 1.2k 0.1× 5.7k 1.3× 546 50.0k

Countries citing papers authored by Brian O’Sullivan

Since Specialization
Citations

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

Fields of papers citing papers by Brian O’Sullivan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Brian O’Sullivan. 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 Brian O’Sullivan. The network helps show where Brian O’Sullivan may publish in the future.

Co-authorship network of co-authors of Brian O’Sullivan

This figure shows the co-authorship network connecting the top 25 collaborators of Brian O’Sullivan. A scholar is included among the top collaborators of Brian O’Sullivan 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 Brian O’Sullivan. Brian O’Sullivan 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.
Bahig, Houda, Apostolos Christopoulos, Édith Filion, et al.. (2025). Artificial Intelligence Model for Imaging-Based Extranodal Extension Detection and Outcome Prediction in Human Papillomavirus−Positive Oropharyngeal Cancer. JAMA Otolaryngology–Head & Neck Surgery. 152(1). 7–7.
2.
O’Sullivan, Brian, Jie Su, Andrew Hope, et al.. (2022). Inter-rater concordance and operating definitions of radiologic nodal feature assessment in human papillomavirus-positive oropharyngeal carcinoma. Oral Oncology. 125. 105716–105716. 8 indexed citations
3.
Liu, Xiaoyang, Farhad Maleki, Nikesh Muthukrishnan, et al.. (2021). Site-Specific Variation in Radiomic Features of Head and Neck Squamous Cell Carcinoma and Its Impact on Machine Learning Models. Cancers. 13(15). 3723–3723. 5 indexed citations
4.
Huang, Shao Hui, Lin Lu, Brian O’Sullivan, et al.. (2018). Radiologic-Pathologic Correlation of Tumor Thickness and Its Prognostic Importance in Squamous Cell Carcinoma of the Oral Cavity: Implications for the Eighth Edition Tumor, Node, Metastasis Classification. American Journal of Neuroradiology. 39(10). 1896–1902. 41 indexed citations
5.
O’Sullivan, Brian, James D. Brierley, David R. Byrd, et al.. (2017). The TNM classification of malignant tumours—towards common understanding and reasonable expectations. The Lancet Oncology. 18(7). 849–851. 187 indexed citations
6.
Hosni, Ali, Caitlin McMullen, Shao Hui Huang, et al.. (2017). Lymph node ratio relationship to regional failure and distant metastases in oral cavity cancer. Radiotherapy and Oncology. 124(2). 225–231. 27 indexed citations
7.
Hui, Angela Bik‐Yu, Alice Lin, Wei Xu, et al.. (2013). Potentially Prognostic miRNAs in HPV-Associated Oropharyngeal Carcinoma. Clinical Cancer Research. 19(8). 2154–2162. 88 indexed citations
8.
Le, Quynh‐Thu, Richard Fisher, Kelly S. Oliner, et al.. (2012). Prognostic and Predictive Significance of Plasma HGF and IL-8 in a Phase III Trial of Chemoradiation with or without Tirapazamine in Locoregionally Advanced Head and Neck Cancer. Clinical Cancer Research. 18(6). 1798–1807. 41 indexed citations
9.
Hui, Angela Bik‐Yu, Jeff Bruce, Nehad M. Alajez, et al.. (2011). Significance of Dysregulated Metadherin and MicroRNA-375 in Head and Neck Cancer. Clinical Cancer Research. 17(24). 7539–7550. 78 indexed citations
10.
Alajez, Nehad M., Michelle Lenarduzzi, Emma Ito, et al.. (2011). miR-218 Suppresses Nasopharyngeal Cancer Progression through Downregulation of Survivin and the SLIT2-ROBO1 Pathway. Cancer Research. 71(6). 2381–2391. 241 indexed citations
11.
Velec, Michael, John Waldron, Brian O’Sullivan, et al.. (2010). Cone-Beam CT Assessment of Interfraction and Intrafraction Setup Error of Two Head-and-Neck Cancer Thermoplastic Masks. International Journal of Radiation Oncology*Biology*Physics. 76(3). 949–955. 63 indexed citations
12.
Hui, Angela Bik‐Yu, Michelle Lenarduzzi, Levi Waldron, et al.. (2010). Comprehensive MicroRNA Profiling for Head and Neck Squamous Cell Carcinomas. Clinical Cancer Research. 16(4). 1129–1139. 321 indexed citations
13.
Peters, Lester J., Brian O’Sullivan, J. Giralt, et al.. (2010). Critical Impact of Radiotherapy Protocol Compliance and Quality in the Treatment of Advanced Head and Neck Cancer: Results From TROG 02.02. Journal of Clinical Oncology. 28(18). 2996–3001. 548 indexed citations breakdown →
14.
Rischin, Danny, Richard J. Young, Richard Fisher, et al.. (2010). Prognostic Significance of p16 INK4A and Human Papillomavirus in Patients With Oropharyngeal Cancer Treated on TROG 02.02 Phase III Trial. Journal of Clinical Oncology. 28(27). 4142–4148. 571 indexed citations breakdown →
15.
Alajez, Nehad M., Joseph D. Mocanu, Wei Shi, et al.. (2008). Efficacy of Systemically Administered Mutant Vesicular Stomatitis Virus (VSVΔ51) Combined with Radiation for Nasopharyngeal Carcinoma. Clinical Cancer Research. 14(15). 4891–4897. 18 indexed citations
16.
Flume, Patrick A., Brian O’Sullivan, Karen A. Robinson, et al.. (2007). Cystic Fibrosis Pulmonary Guidelines. American Journal of Respiratory and Critical Care Medicine. 176(10). 957–969. 765 indexed citations breakdown →
17.
Pisters, Peter W. T. & Brian O’Sullivan. (2002). Retroperitoneal sarcomas: combined modality treatment approaches. Current Opinion in Oncology. 14(4). 400–405. 48 indexed citations
18.
Davis, Aileen M., Anthony M. Griffin, Jay S. Wunder, et al.. (2000). Predictors of functional outcomes following limb salvage surgery for lower-extremity soft tissue sarcoma. Journal of Surgical Oncology. 73(4). 206–211. 118 indexed citations
19.
Warde, Padraig, Brian O’Sullivan, John Waldron, et al.. (2000). A phase II study of Biotene in the treatment of postradiation xerostomia in patients with head and neck cancer. Supportive Care in Cancer. 8(3). 203–208. 67 indexed citations
20.
Menconi, Michael J., et al.. (1994). PRIOR EXPOSURE TO ENDOTOXIN EXACERBATES LIPOPOLYSACCHARIDE-INDUCED HYPOXEMIA AND ALVEOLITIS IN ANESTHETIZED SWINE. Shock. 2(5). 362–369. 12 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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