J G M Kok

2.2k total citations · 1 hit paper
32 papers, 1.3k citations indexed

About

J G M Kok is a scholar working on Radiation, Radiology, Nuclear Medicine and Imaging and Pulmonary and Respiratory Medicine. According to data from OpenAlex, J G M Kok has authored 32 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Radiation, 21 papers in Radiology, Nuclear Medicine and Imaging and 19 papers in Pulmonary and Respiratory Medicine. Recurrent topics in J G M Kok's work include Advanced Radiotherapy Techniques (26 papers), Radiation Therapy and Dosimetry (17 papers) and Advanced MRI Techniques and Applications (14 papers). J G M Kok is often cited by papers focused on Advanced Radiotherapy Techniques (26 papers), Radiation Therapy and Dosimetry (17 papers) and Advanced MRI Techniques and Applications (14 papers). J G M Kok collaborates with scholars based in Netherlands, Germany and United States. J G M Kok's co-authors include Bas W. Raaymakers, J J W Lagendijk, Bram van Asselen, Alexander Raaijmakers, S.P.M. Crijns, Karel C Smit, J. Wolthaus, Kevin J. Brown, Johan Overweg and Marco van Vulpen and has published in prestigious journals such as Physics in Medicine and Biology, Medical Physics and Radiotherapy and Oncology.

In The Last Decade

J G M Kok

30 papers receiving 1.2k 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.

Integrating a 1.5 T MRI scanner with a 6 MV accelerator: proof of concept

2009 469 citations Bas W. Raaymakers, J J W Lagendijk et al. Physics in Medicine and Biology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J G M Kok Netherlands	16	1.1k	829	820	122	43	32	1.3k
Bradley M. Oborn Australia	19	936 0.8×	648 0.8×	807 1.0×	91 0.7×	67 1.6×	65	1.1k
O. Zeidan United States	19	1.2k 1.1×	717 0.9×	904 1.1×	268 2.2×	31 0.7×	69	1.4k
Cheryl Duzenli Canada	20	1.1k 1.0×	842 1.0×	712 0.9×	319 2.6×	43 1.0×	67	1.3k
Johannes C.J. de Boer Netherlands	21	949 0.9×	621 0.7×	902 1.1×	139 1.1×	18 0.4×	40	1.2k
Joakim Medin Sweden	22	1.3k 1.1×	492 0.6×	1.2k 1.4×	168 1.4×	169 3.9×	47	1.5k
B.W. Raaymakers Netherlands	10	818 0.7×	634 0.8×	646 0.8×	127 1.0×	34 0.8×	24	950
J. Wolthaus Netherlands	21	1.7k 1.6×	1.4k 1.7×	1.2k 1.5×	329 2.7×	46 1.1×	53	1.9k
Michael K. Fix Switzerland	23	1.2k 1.1×	782 0.9×	928 1.1×	414 3.4×	37 0.9×	114	1.4k
Kenneth P. Gall United States	14	1.1k 1.0×	567 0.7×	824 1.0×	212 1.7×	42 1.0×	30	1.4k
N. Jornet Spain	20	1.2k 1.1×	782 0.9×	787 1.0×	270 2.2×	52 1.2×	52	1.3k

Countries citing papers authored by J G M Kok

Since Specialization

Citations

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

Fields of papers citing papers by J G M Kok

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J G M Kok. 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 J G M Kok. The network helps show where J G M Kok may publish in the future.

Co-authorship network of co-authors of J G M Kok

This figure shows the co-authorship network connecting the top 25 collaborators of J G M Kok. A scholar is included among the top collaborators of J G M Kok 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 J G M Kok. J G M Kok 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

Akdağ, Osman, et al.. (2021). OC-0502 Real-time cardiorespiratory motion management for MRI-guided stereotactic arrythmia radioablation. Radiotherapy and Oncology. 161. S384–S385.

Tijssen, Rob H.N., et al.. (2019). Design and feasibility of a flexible, on-body, high impedance coil receive array for a 1.5 T MR-linac. Physics in Medicine and Biology. 64(18). 185004–185004. 22 indexed citations

Pooter, Jacco de, S. Woodings, J. Wolthaus, et al.. (2018). Commissioning of a water calorimeter as a primary standard for absorbed dose to water in magnetic fields. Physics in Medicine and Biology. 64(3). 35013–35013. 14 indexed citations

Woodings, S., J.J. Bluemink, Yury Niatsetski, et al.. (2018). Beam characterisation of the 1.5 T MRI-linac. Physics in Medicine and Biology. 63(8). 85015–85015. 59 indexed citations

Hackett, S., Bram van Asselen, J. Wolthaus, et al.. (2018). Spiraling contaminant electrons increase doses to surfaces outside the photon beam of an MRI-linac with a perpendicular magnetic field. Physics in Medicine and Biology. 63(9). 95001–95001. 41 indexed citations

Meles, Sanne K., J G M Kok, Bauke M. de Jong, et al.. (2018). The cerebral metabolic topography of spinocerebellar ataxia type 3. NeuroImage Clinical. 19. 90–97. 2 indexed citations

Lätt, Jimmy, Fredrik Åhs, M Fredrikson, et al.. (2017). Diffusion tensor imaging and tractography of the white matter in normal aging: The rate-of-change differs between segments within tracts. Magnetic Resonance Imaging. 45. 113–119. 17 indexed citations

Woodings, S., J. Wolthaus, Bram van Asselen, et al.. (2017). Performance of a PTW 60019 microDiamond detector in a 1.5 T MRI-linac. Physics in Medicine and Biology. 63(5). 05NT04–05NT04. 25 indexed citations

Houweling, A.C., J. Wolthaus, S. Woodings, et al.. (2016). Performance of a cylindrical diode array for use in a 1.5 T MR-linac. Physics in Medicine and Biology. 61(3). N80–N89. 43 indexed citations

10.

Wang, Li, Zhifei Wen, Marco van Vulpen, et al.. (2016). Biological responses of human solid tumor cells to X‐ray irradiation within a 1.5‐Tesla magnetic field generated by a magnetic resonance imaging–linear accelerator. Bioelectromagnetics. 37(7). 471–480. 11 indexed citations

11.

Wolthaus, J., et al.. (2015). TH-CD-204-04: Automated Beam Modeling for a Hybrid MRI Radiotherapy System. Medical Physics. 42(6Part43). 3732–3732. 1 indexed citations

12.

Smit, Karel C, J G M Kok, J J W Lagendijk, & Bas W. Raaymakers. (2014). Performance of a multi-axis ionization chamber array in a 1.5 T magnetic field. Physics in Medicine and Biology. 59(7). 1845–1855. 31 indexed citations

13.

Smit, Karel C, et al.. (2014). Relative dosimetry in a 1.5 T magnetic field: an MR-linac compatible prototype scanning water phantom. Physics in Medicine and Biology. 59(15). 4099–4109. 37 indexed citations

14.

Smit, Karel C, Bram van Asselen, J G M Kok, et al.. (2013). Towards reference dosimetry for the MR-linac: magnetic field correction of the ionization chamber reading. Physics in Medicine and Biology. 58(17). 5945–5957. 99 indexed citations

15.

Crijns, S.P.M., J G M Kok, J J W Lagendijk, & Bas W. Raaymakers. (2011). Towards MRI-guided linear accelerator control: gating on an MRI accelerator. Physics in Medicine and Biology. 56(15). 4815–4825. 40 indexed citations

16.

Raaymakers, Bas W., Johannes C.J. de Boer, S.P.M. Crijns, et al.. (2011). Integrated megavoltage portal imaging with a 1.5 T MRI linac. Physics in Medicine and Biology. 56(19). N207–N214. 36 indexed citations

17.

Kok, J G M, et al.. (2009). Installation of the 1.5 T MRI accelerator next to clinical accelerators: impact of the fringe field. Physics in Medicine and Biology. 54(18). N409–N415. 16 indexed citations

18.

Overweg, Johan, J G M Kok, Alexander Raaijmakers, et al.. (2009). INTEGRATED 1.5 T MRI AND ACCELERATOR: PROOF OF CONCEPT FOR REAL-TIM E MRI GUIDED RADIOTHERAPY. Radiotherapy and Oncology. 92. S33–S33. 1 indexed citations

19.

Raaymakers, Bas W., Alexander Raaijmakers, J G M Kok, et al.. (2009). Dosimetry for the MRI accelerator: the impact of a magnetic field on the response of a Farmer NE2571 ionization chamber. Physics in Medicine and Biology. 54(10). 2993–3002. 129 indexed citations

20.

Kok, J G M. (2001). Fixed bending current for Elekta SL25 linear accelerators. Journal of Medical Engineering & Technology. 25(4). 169–172. 1 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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