Helen Ko

401 total citations
10 papers, 218 citations indexed

About

Helen Ko is a scholar working on Epidemiology, Cardiology and Cardiovascular Medicine and Surgery. According to data from OpenAlex, Helen Ko has authored 10 papers receiving a total of 218 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Epidemiology, 3 papers in Cardiology and Cardiovascular Medicine and 2 papers in Surgery. Recurrent topics in Helen Ko's work include Congenital Heart Disease Studies (5 papers), Congenital Diaphragmatic Hernia Studies (2 papers) and Prenatal Screening and Diagnostics (2 papers). Helen Ko is often cited by papers focused on Congenital Heart Disease Studies (5 papers), Congenital Diaphragmatic Hernia Studies (2 papers) and Prenatal Screening and Diagnostics (2 papers). Helen Ko collaborates with scholars based in United States, Singapore and United Kingdom. Helen Ko's co-authors include Kalyani K. Mehta, Ira A. Parness, Steven A. Kamenir, Shubhika Srivastava, Lewis Steinberg, Wyman W. Lai, Sangeeta Sharma, John T. Doucette, James C. Nielsen and Puneet Bhatla and has published in prestigious journals such as PEDIATRICS, Journal of the American Society of Echocardiography and Circulation Cardiovascular Imaging.

In The Last Decade

Helen Ko

10 papers receiving 210 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Helen Ko United States 8 104 89 68 41 28 10 218
Arwa Nasir United States 8 76 0.7× 35 0.4× 76 1.1× 28 0.7× 12 0.4× 22 253
Mohit Sahni India 7 135 1.3× 33 0.4× 132 1.9× 81 2.0× 84 3.0× 14 320
Rodrigo Soto Chile 9 143 1.4× 109 1.2× 189 2.8× 55 1.3× 16 0.6× 38 393
Janice Burnett United States 6 281 2.7× 113 1.3× 151 2.2× 112 2.7× 23 0.8× 10 345
Amram J. Cohen Israel 9 66 0.6× 140 1.6× 113 1.7× 178 4.3× 6 0.2× 12 289
Abigail Wilpers United States 8 73 0.7× 32 0.4× 43 0.6× 26 0.6× 6 0.2× 19 222
Bashir Hanif Pakistan 10 27 0.3× 171 1.9× 27 0.4× 91 2.2× 57 2.0× 58 290
Lorne Bellan Canada 13 132 1.3× 34 0.4× 30 0.4× 48 1.2× 126 4.5× 33 487
Mei′e Niu China 10 32 0.3× 9 0.1× 80 1.2× 28 0.7× 14 0.5× 35 259
Roger A. Alvarez United States 5 37 0.4× 36 0.4× 70 1.0× 17 0.4× 2 0.1× 14 249

Countries citing papers authored by Helen Ko

Since Specialization
Citations

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

Fields of papers citing papers by Helen Ko

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Helen Ko

This figure shows the co-authorship network connecting the top 25 collaborators of Helen Ko. A scholar is included among the top collaborators of Helen Ko 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 Helen Ko. Helen Ko is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

10 of 10 papers shown
1.
Ko, Helen. (2020). Teaching older adults: an instructional model from Singapore. Educational Gerontology. 46(12). 731–745. 11 indexed citations
2.
Ganigara, Madhusudan, Shubhika Srivastava, Preeti Malik, et al.. (2019). Comparison of chloral hydrate and pentobarbital sedation for pediatric echocardiography. Echocardiography. 36(4). 766–769. 8 indexed citations
3.
Uppu, Santosh C., Justin Weigand, Simon Lee, et al.. (2018). Validation of Right Atrial Area as a Measure of Right Atrial Size and Normal Values of in Healthy Pediatric Population by Two-Dimensional Echocardiography. Pediatric Cardiology. 39(5). 892–901. 6 indexed citations
4.
Simpson, John, Leo Lopez, Philippe Acar, et al.. (2016). Three-dimensional echocardiography in congenital heart disease: an expert consensus document from the European Association of Cardiovascular Imaging and the American Society of Echocardiography. European Heart Journal - Cardiovascular Imaging. 17(10). 1071–1097. 53 indexed citations
5.
Srivastava, Shubhika, et al.. (2016). Impact of changing indications and increased utilization of fetal echocardiography on prenatal detection of congenital heart disease. Congenital Heart Disease. 12(1). 67–73. 12 indexed citations
6.
Bhatla, Puneet, James C. Nielsen, Helen Ko, et al.. (2012). Normal Values of Left Atrial Volume in Pediatric Age Group Using a Validated Allometric Model. Circulation Cardiovascular Imaging. 5(6). 791–796. 30 indexed citations
7.
Mehta, Kalyani K. & Helen Ko. (2004). Filial piety revisited in the context of modernizing Asian societies. Geriatrics and gerontology international. 4(s1). 29 indexed citations
8.
Sharma, Sangeeta, Ira A. Parness, Steven A. Kamenir, et al.. (2003). Screening fetal echocardiography by telemedicine: Efficacy and community acceptance. Journal of the American Society of Echocardiography. 16(3). 202–208. 47 indexed citations
9.
Zeltser, Ilana, Ira A. Parness, Helen Ko, Ian R. Holzman, & Steven A. Kamenir. (2003). Midaortic Syndrome in the Fetus and Premature Newborn: A New Etiology of Nonimmune Hydrops Fetalis and Reversible Fetal Cardiomyopathy. PEDIATRICS. 111(6). 1437–1442. 17 indexed citations
10.
Ko, Helen. (1986). Minuchin's structural therapy for Vietnamese Chinese families: A systems perspective. Contemporary Family Therapy. 8(1). 20–32. 5 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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2026