John Grammatikakis

1.3k total citations
17 papers, 925 citations indexed

About

John Grammatikakis is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, John Grammatikakis has authored 17 papers receiving a total of 925 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Surgery, 5 papers in Pulmonary and Respiratory Medicine and 4 papers in Oncology. Recurrent topics in John Grammatikakis's work include Gastrointestinal disorders and treatments (5 papers), Inflammatory Bowel Disease (4 papers) and Diverticular Disease and Complications (3 papers). John Grammatikakis is often cited by papers focused on Gastrointestinal disorders and treatments (5 papers), Inflammatory Bowel Disease (4 papers) and Diverticular Disease and Complications (3 papers). John Grammatikakis collaborates with scholars based in Greece and Germany. John Grammatikakis's co-authors include Nicholas Gourtsoyiannis, Nickolas Papanikolaou, Panos Prassopoulos, Thomas G. Maris, Panagiotis Prassopoulos, Maria Roussomoustakaki, Manousos Christodoulakis, Eelco de Bree, D.D. Tsiftsis and Kostas Perisinakis and has published in prestigious journals such as The American Journal of Gastroenterology, Radiographics and European Radiology.

In The Last Decade

John Grammatikakis

17 papers receiving 887 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John Grammatikakis Greece 14 671 424 248 217 185 17 925
Rebecca Greenhalgh United Kingdom 13 456 0.7× 429 1.0× 67 0.3× 293 1.4× 185 1.0× 30 832
Aleksandar Radosevic Spain 9 362 0.5× 275 0.6× 58 0.2× 241 1.1× 60 0.3× 22 680
Bo Holmström Sweden 20 1.7k 2.5× 231 0.5× 92 0.4× 123 0.6× 165 0.9× 32 1.9k
Laura Broglia Italy 12 391 0.6× 172 0.4× 78 0.3× 142 0.7× 96 0.5× 40 555
Hasan T. Kirat United States 18 1.3k 1.9× 530 1.3× 276 1.1× 377 1.7× 54 0.3× 34 1.6k
G Pompili Italy 12 294 0.4× 151 0.4× 13 0.1× 94 0.4× 86 0.5× 25 521
Stephan Schleder Germany 13 213 0.3× 214 0.5× 51 0.2× 186 0.9× 45 0.2× 45 517
Peter Darwin United States 15 388 0.6× 38 0.1× 83 0.3× 128 0.6× 45 0.2× 57 644
Daniel P. Geisler United States 16 1.0k 1.5× 72 0.2× 260 1.0× 37 0.2× 73 0.4× 21 1.2k
Lee Alexander Grant United Kingdom 13 257 0.4× 57 0.1× 14 0.1× 110 0.5× 27 0.1× 29 494

Countries citing papers authored by John Grammatikakis

Since Specialization
Citations

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

Fields of papers citing papers by John Grammatikakis

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John Grammatikakis

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

All Works

17 of 17 papers shown
1.
Grammatikakis, John, et al.. (2013). Prognostic significance and diagnostic value of PTEN and p53 expression in endometrial carcinoma. A retrospective clinicopathological and immunohistochemical study.. PubMed. 18(1). 195–201. 22 indexed citations
2.
3.
Gourtsoyiannis, Nicholas, et al.. (2008). Crohn's disease lymphadenopathy: MR imaging findings. European Journal of Radiology. 69(3). 425–428. 25 indexed citations
4.
Κarmiris, Konstantinos, Maria Roussomoustakaki, Maria Tzardi, et al.. (2007). Ileal Malignant Melanoma Causing Intussusception: Report of a Case. Surgery Today. 37(6). 506–509. 15 indexed citations
5.
Gourtsoyiannis, Nicholas, et al.. (2006). Imaging of small intestinal Crohn’s disease: comparison between MR enteroclysis and conventional enteroclysis. European Radiology. 16(9). 1915–1925. 114 indexed citations
6.
Gourtsoyiannis, Nicholas, et al.. (2004). Assessment of Crohn?s disease activity in the small bowel with MR and conventional enteroclysis: preliminary results. European Radiology. 14(6). 1017–1024. 131 indexed citations
7.
Papanikolaou, Nickolas, John Grammatikakis, Thomas G. Maris, et al.. (2003). MR colonography with fecal tagging: comparison between 2D turbo FLASH and 3D FLASH sequences. European Radiology. 13(3). 448–452. 13 indexed citations
8.
Melissas, John, G Schoretsanitis, John Grammatikakis, & Dimitris D. Tsiftsis. (2003). Technical Modification of Laparoscopic Vertical Banded Gastroplasty. Obesity Surgery. 13(1). 132–135. 7 indexed citations
9.
Perisinakis, Kostas, John Damilakis, John Grammatikakis, Nicholas Theocharopoulos, & Nicholas Gourtsoyiannis. (2003). Radiogenic risks from hysterosalpingography. European Radiology. 13(7). 1522–1528. 40 indexed citations
10.
Papanikolaou, Nickolas, Panos Prassopoulos, John Grammatikakis, et al.. (2002). Optimization of a contrast medium suitable for conventional enteroclysis, MR enteroclysis, and virtual MR enteroscopy. Abdominal Imaging. 27(5). 517–522. 16 indexed citations
11.
Gourtsoyiannis, Nicholas, Nickolas Papanikolaou, John Grammatikakis, & Panos Prassopoulos. (2002). MR enteroclysis: technical considerations and clinical applications. European Radiology. 12(11). 2651–2658. 110 indexed citations
12.
Grammatikakis, John, et al.. (2001). Role of conventional radiology in the diagnosis and staging of gastrointestinal tract neoplasms. Seminars in Surgical Oncology. 20(2). 91–108. 9 indexed citations
13.
Prassopoulos, Panagiotis, et al.. (2001). MR Enteroclysis Imaging of Crohn Disease. Radiographics. 21(suppl_1). S161–S172. 153 indexed citations
14.
Gourtsoyiannis, Nicholas, Nickolas Papanikolaou, John Grammatikakis, Thomas G. Maris, & Panos Prassopoulos. (2001). MR enteroclysis protocol optimization: comparison between 3D FLASH with fat saturation after intravenous gadolinium injection and true FISP sequences. European Radiology. 11(6). 908–913. 74 indexed citations
15.
Gourtsoyiannis, Nicholas, Nickolas Papanikolaou, John Grammatikakis, Thomas G. Maris, & Panagiotis Prassopoulos. (2000). MR Imaging of the Small Bowel with a True-FISP Sequence After Enteroclysis with Water Solution. Investigative Radiology. 35(12). 707–711. 62 indexed citations
16.
Bree, Eelco de, John Grammatikakis, Manousos Christodoulakis, & D.D. Tsiftsis. (1998). The clinical significance of acquired jejunoileal diverticula. The American Journal of Gastroenterology. 93(12). 2523–2528. 92 indexed citations
17.
Damilakis, John, et al.. (1996). Accidental Embryo Irradiation During Barium Enema Examinations. Investigative Radiology. 31(4). 242–245. 20 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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