Ryan E. Longman

1.4k total citations
41 papers, 995 citations indexed

About

Ryan E. Longman is a scholar working on Obstetrics and Gynecology, Surgery and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, Ryan E. Longman has authored 41 papers receiving a total of 995 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Obstetrics and Gynecology, 10 papers in Surgery and 9 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in Ryan E. Longman's work include Prenatal Screening and Diagnostics (8 papers), Pregnancy and preeclampsia studies (5 papers) and Ovarian cancer diagnosis and treatment (5 papers). Ryan E. Longman is often cited by papers focused on Prenatal Screening and Diagnostics (8 papers), Pregnancy and preeclampsia studies (5 papers) and Ovarian cancer diagnosis and treatment (5 papers). Ryan E. Longman collaborates with scholars based in United States, Israel and Moldova. Ryan E. Longman's co-authors include Alison G. Cahill, Anthony Odibo, Elaine F. Remmers, Marie Griffiths, Grant W. Cannon, George A. Macones, Ronald L. Wilder, Kimberly A. Roehl, Ying Du and Timothy R.B. Johnson and has published in prestigious journals such as Nature Genetics, The Journal of Immunology and Radiology.

In The Last Decade

Ryan E. Longman

39 papers receiving 965 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryan E. Longman United States 16 272 250 186 170 166 41 995
Ewa Głowacka Poland 16 286 1.1× 512 2.0× 40 0.2× 106 0.6× 64 0.4× 66 902
Patrizia Accorsi Italy 21 61 0.2× 172 0.7× 57 0.3× 266 1.6× 290 1.7× 111 1.3k
Mizanur Rahman Sweden 15 149 0.5× 428 1.7× 102 0.5× 101 0.6× 45 0.3× 35 712
Natasha Singh United Kingdom 16 124 0.5× 149 0.6× 93 0.5× 204 1.2× 27 0.2× 55 973
Weimin Yang China 16 133 0.5× 84 0.3× 33 0.2× 324 1.9× 85 0.5× 55 1.0k
Andrzej Malinowski Poland 16 294 1.1× 497 2.0× 46 0.2× 148 0.9× 37 0.2× 130 923
René Wenzl Austria 27 1.1k 4.1× 599 2.4× 89 0.5× 120 0.7× 144 0.9× 107 2.0k
Kazimierz Pityński Poland 17 443 1.6× 147 0.6× 32 0.2× 92 0.5× 31 0.2× 104 905
Junlong Zhang China 16 52 0.2× 131 0.5× 107 0.6× 232 1.4× 50 0.3× 48 754
Laurence Loubière United Kingdom 13 56 0.2× 161 0.6× 39 0.2× 152 0.9× 167 1.0× 14 747

Countries citing papers authored by Ryan E. Longman

Since Specialization
Citations

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

Fields of papers citing papers by Ryan E. Longman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan E. Longman. 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 Ryan E. Longman. The network helps show where Ryan E. Longman may publish in the future.

Co-authorship network of co-authors of Ryan E. Longman

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan E. Longman. A scholar is included among the top collaborators of Ryan E. Longman 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 Ryan E. Longman. Ryan E. Longman 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.
Abramowicz, Jacques S., et al.. (2025). O-RADS US Version 2022 Improves Patient Risk Stratification When Compared with O-RADS US Version 2019. Radiology. 314(3). e242200–e242200. 1 indexed citations
2.
Lengyel, Ernst, et al.. (2025). The Ultrasonography Characteristics of Borderline Ovarian Tumor Subtypes. Journal of Ultrasound in Medicine. 44(11). 2133–2146.
3.
Whitney, Heather M., Hui Li, Jacques S. Abramowicz, et al.. (2025). Hybrid artificial intelligence echogenic components‐based diagnosis of adnexal masses on ultrasound. Medical Physics. 52(7). e17983–e17983.
4.
Morgan, Jessica, et al.. (2024). Management of monochorionic diamniotic twin gestation affected by Type‐II selective fetal growth restriction: cost‐effectiveness analysis. Ultrasound in Obstetrics and Gynecology. 65(1). 39–46. 1 indexed citations
5.
Longman, Ryan E., et al.. (2023). Diagnostic Performance of Ultrasonography-Based Risk Models in Differentiating Between Benign and Malignant Ovarian Tumors in a US Cohort. JAMA Network Open. 6(7). e2323289–e2323289. 13 indexed citations
6.
Longman, Ryan E., et al.. (2020). Immunological Role of the Maternal Uterine Microbiome in Pregnancy: Pregnancies Pathologies and Alterated Microbiota. Frontiers in Immunology. 10. 2823–2823. 55 indexed citations
7.
Harper, Lorie M., Amelia Sutton, Ryan E. Longman, & Anthony Odibo. (2014). An economic analysis of prenatal cytogenetic technologies for sonographically detected fetal anomalies. American Journal of Medical Genetics Part A. 164(5). 1192–1197. 13 indexed citations
8.
Conner, Shayna N., Ryan E. Longman, & Alison G. Cahill. (2014). The role of ultrasound in the diagnosis of fetal genetic syndromes. Best Practice & Research Clinical Obstetrics & Gynaecology. 28(3). 417–428. 18 indexed citations
9.
Tuuli, Methodius G., Lucy Liu, Ryan E. Longman, et al.. (2014). Infectious morbidity is higher after second-stage compared with first-stage cesareans. American Journal of Obstetrics and Gynecology. 211(4). 410.e1–410.e6. 19 indexed citations
10.
Theilen, Lauren H., Vincent M. Mellnick, Ryan E. Longman, et al.. (2014). Utility of magnetic resonance imaging for suspected appendicitis in pregnant women. American Journal of Obstetrics and Gynecology. 212(3). 345.e1–345.e6. 39 indexed citations
11.
Conner, Shayna N., Methodius G. Tuuli, Ryan E. Longman, et al.. (2013). Impact of obesity on incision-to-delivery interval and neonatal outcomes at cesarean delivery. American Journal of Obstetrics and Gynecology. 209(4). 386.e1–386.e6. 35 indexed citations
12.
Sehn, Jennifer K., et al.. (2013). Ovarian complete hydatidiform mole: case study with molecular analysis and review of the literature. Human Pathology. 44(12). 2861–2864. 4 indexed citations
13.
Stout, Molly J., Anthony Odibo, Anthony Shanks, et al.. (2012). Fibroid tumors are not a risk factor for adverse outcomes in twin pregnancies. American Journal of Obstetrics and Gynecology. 208(1). 68.e1–68.e5. 8 indexed citations
14.
Harper, Lorie M., Anthony Odibo, Kimberly A. Roehl, et al.. (2011). Risk of preterm delivery and growth restriction in twins discordant for structural anomalies. American Journal of Obstetrics and Gynecology. 206(1). 70.e1–70.e5. 5 indexed citations
15.
Zhong, Yan, et al.. (2011). The Genetic Sonogram. Journal of Ultrasound in Medicine. 30(4). 463–469. 7 indexed citations
16.
Longman, Ryan E. & Timothy R.B. Johnson. (2007). Viral respiratory disease in pregnancy. Current Opinion in Obstetrics & Gynecology. 19(2). 120–125. 46 indexed citations
17.
Dracheva, Svetlana, Elaine F. Remmers, Stephen Chen, et al.. (2000). An Integrated Genetic Linkage Map with 1137 Markers Constructed from Five F2 Crosses of Autoimmune Disease-Prone and -Resistant Inbred Rat Strains. Genomics. 63(2). 202–226. 17 indexed citations
18.
Kawahito, Yutaka, Elaine F. Remmers, R L Wilder, et al.. (1998). A genetic linkage map of rat chromosome 20 derived from five F 2 crosses. Immunogenetics. 48(5). 335–338. 7 indexed citations
19.
Kawahito, Yutaka, Grant W. Cannon, Pércío S. Gulko, et al.. (1998). Localization of Quantitative Trait Loci Regulating Adjuvant-Induced Arthritis in Rats: Evidence for Genetic Factors Common to Multiple Autoimmune Diseases. The Journal of Immunology. 161(8). 4411–4419. 90 indexed citations
20.
Gulko, Pércío S., Yutaka Kawahito, Elaine F. Remmers, et al.. (1998). Identification of a new non‐major histocompatibility complex genetic locus on chromosome 2 that controls disease severity in collagen‐induced arthritis in rats. Arthritis & Rheumatism. 41(12). 2122–2131. 72 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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