Ahmed Hammad

1.3k total citations · 1 hit paper
23 papers, 947 citations indexed

About

Ahmed Hammad is a scholar working on Surgery, Hepatology and Physiology. According to data from OpenAlex, Ahmed Hammad has authored 23 papers receiving a total of 947 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Surgery, 10 papers in Hepatology and 7 papers in Physiology. Recurrent topics in Ahmed Hammad's work include Liver Disease and Transplantation (8 papers), Organ Transplantation Techniques and Outcomes (7 papers) and Nutrition and Health in Aging (7 papers). Ahmed Hammad is often cited by papers focused on Liver Disease and Transplantation (8 papers), Organ Transplantation Techniques and Outcomes (7 papers) and Nutrition and Health in Aging (7 papers). Ahmed Hammad collaborates with scholars based in Egypt, Japan and Canada. Ahmed Hammad's co-authors include Shinji Üemoto, Toshimi Kaido, Shinya Okumura, Yuhei Hamaguchi, Nobuya Inagaki, Y. Tamai, Atsushi Kobayashi, Kohei Ogawa, Yasuhiro Fujimoto and Akira Mori and has published in prestigious journals such as Nutrients, World Journal of Surgery and Nutrition.

In The Last Decade

Ahmed Hammad

23 papers receiving 935 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.

Proposal for new diagnostic criteria for low skeletal muscle mass based on computed tomography imaging in Asian adults

2016 388 citations Yuhei Hamaguchi, Toshimi Kaido et al. Nutrition profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ahmed Hammad Egypt	12	631	357	258	197	180	23	947
Y. Tamai Japan	3	509 0.8×	236 0.7×	152 0.6×	105 0.5×	121 0.7×	3	658
Stef Levolger Netherlands	13	1.2k 1.9×	423 1.2×	202 0.8×	178 0.9×	342 1.9×	21	1.5k
Kostan W. Reisinger Netherlands	17	766 1.2×	537 1.5×	43 0.2×	72 0.4×	296 1.6×	25	1.3k
Tushar Gohel United States	11	206 0.3×	247 0.7×	24 0.1×	61 0.3×	204 1.1×	29	674
Peter van Duijvendijk Netherlands	18	159 0.3×	635 1.8×	33 0.1×	38 0.2×	454 2.5×	45	1.1k
Annic Baumgartner Switzerland	10	372 0.6×	154 0.4×	7 0.0×	116 0.6×	203 1.1×	19	819
Tomoaki Yatabe Japan	22	143 0.2×	507 1.4×	30 0.1×	188 1.0×	172 1.0×	94	1.2k
Julio Santoyo Santoyo Spain	15	78 0.1×	529 1.5×	315 1.2×	195 1.0×	67 0.4×	102	722
Tristan Struja Switzerland	13	171 0.3×	164 0.5×	8 0.0×	171 0.9×	147 0.8×	42	848
Magdalena Pisarska Poland	26	288 0.5×	1.6k 4.4×	23 0.1×	53 0.3×	670 3.7×	100	1.9k

Countries citing papers authored by Ahmed Hammad

Since Specialization

Citations

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

Fields of papers citing papers by Ahmed Hammad

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ahmed Hammad

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

Bhat, Mamatha, Sergi Clotet‐Freixas, Cristina Baciu, et al.. (2021). Combined proteomic/transcriptomic signature of recurrence post-liver transplantation for hepatocellular carcinoma beyond Milan. Clinical Proteomics. 18(1). 27–27. 11 indexed citations

Azhie, Amirhossein, et al.. (2021). Metabolic Complications in Liver Transplantation Recipients: How We Can Optimize Long‐Term Survival. Liver Transplantation. 27(10). 1468–1478. 17 indexed citations

Hammad, Ahmed, et al.. (2020). Treatment challenges of sigmoid-shaped esophagus and severe achalasia. Annals of Medicine and Surgery. 61. 30–34. 9 indexed citations

Tung, Stephanie, Laura Davis, Julie Hallet, et al.. (2019). Population-Level Symptom Assessment Following Pancreaticoduodenectomy for Adenocarcinoma. JAMA Surgery. 154(11). e193348–e193348. 30 indexed citations

Hammad, Ahmed, et al.. (2018). Reconstruction of Complex Midline Abdominal Wall Defects, Is There a Gold Standard?. 1(1). 1–11. 1 indexed citations

Kaido, Toshimi, Ahmed Hammad, Shintaro Yagi, et al.. (2018). The Impact of Preoperative Hemoglobin Level on the Short‐Term Outcomes After Living Donor Liver Transplantation. World Journal of Surgery. 42(12). 4081–4089. 4 indexed citations

Aliyev, Vusal, Kentaro Yasuchika, Ahmed Hammad, et al.. (2018). A huge intraductal papillary neoplasm of the bile duct treated by right trisectionectomy after right portal vein embolization. Annals of Hepato-Biliary-Pancreatic Surgery. 22(2). 150–150. 2 indexed citations

Aliyev, Vusal, Shintaro Yagi, Ahmed Hammad, et al.. (2018). Sclerosing encapsulating peritonitis after living-donor liver transplantation: A case series, Kyoto experience. Annals of Hepato-Biliary-Pancreatic Surgery. 22(2). 144–144. 4 indexed citations

Latchana, Nicholas, Laura Davis, Natalie G. Coburn, et al.. (2018). Population-based study of the impact of surgical and adjuvant therapy at the same or a different institution on survival of patients with pancreatic adenocarcinoma. BJS Open. 3(1). 85–94. 8 indexed citations

10.

Aliyev, Vusal, Kentaro Yasuchika, Ahmed Hammad, et al.. (2017). Pancreatico-Gastric Fistula: A Rare Complication of Intraductal Papillary Mucinous Neoplasm. JOP, journal of the pancreas. 18(4). 2 indexed citations

11.

Hammad, Ahmed, Toshimi Kaido, Yuhei Hamaguchi, et al.. (2017). Impact of sarcopenic overweight on the outcomes after living donor liver transplantation. HepatoBiliary Surgery and Nutrition. 6(6). 367–378. 25 indexed citations

12.

Aliyev, Vusal, Kentaro Yasuchika, Ahmed Hammad, et al.. (2017). Coexistent End-stage Nonalcoholic Steatohepatitis and Colon Cancer: Should We Do Liver Transplantation?. Transplantation Proceedings. 49(7). 1649–1651. 1 indexed citations

13.

Hammad, Ahmed, Toshimi Kaido, Vusal Aliyev, Claudia Mandato, & Shinji Üemoto. (2017). Nutritional Therapy in Liver Transplantation. Nutrients. 9(10). 1126–1126. 56 indexed citations

14.

Kaido, Toshimi, Y. Tamai, Yuhei Hamaguchi, et al.. (2016). Effects of pretransplant sarcopenia and sequential changes in sarcopenic parameters after living donor liver transplantation. Nutrition. 33. 195–198. 73 indexed citations

15.

Hamaguchi, Yuhei, Toshimi Kaido, Shinya Okumura, et al.. (2016). Proposal for new diagnostic criteria for low skeletal muscle mass based on computed tomography imaging in Asian adults. Nutrition. 32(11-12). 1200–1205. 388 indexed citations breakdown →

16.

Hammad, Ahmed, Toshimi Kaido, Kohei Ogawa, et al.. (2015). Liver transplantation for advanced hepatocellular carcinoma in patients with Child-Pugh A and B. Surgery Today. 46(2). 248–254. 15 indexed citations

17.

Kamo, Naoko, Toshimi Kaido, Ahmed Hammad, et al.. (2015). Impact of elderly donors for liver transplantation: A single‐center experience. Liver Transplantation. 21(5). 591–598. 17 indexed citations

18.

Hammad, Ahmed, Toshimi Kaido, & Shinji Üemoto. (2014). Perioperative nutritional therapy in liver transplantation. Surgery Today. 45(3). 271–283. 27 indexed citations

19.

Hamaguchi, Yuhei, Toshimi Kaido, Shinya Okumura, et al.. (2014). Impact of quality as well as quantity of skeletal muscle on outcomes after liver transplantation. Liver Transplantation. 20(11). 1413–1419. 197 indexed citations

20.

Hammad, Ahmed, Toshimi Kaido, Kohei Ogawa, et al.. (2014). Perioperative Changes in Nutritional Parameters and Impact of Graft Size in Patients Undergoing Adult Living Donor Liver Transplantation. Liver Transplantation. 20(12). 1486–1496. 3 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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