Ashok J. Kumar

3.1k total citations · 1 hit paper
45 papers, 2.3k citations indexed

About

Ashok J. Kumar is a scholar working on Surgery, Radiology, Nuclear Medicine and Imaging and Genetics. According to data from OpenAlex, Ashok J. Kumar has authored 45 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Surgery, 11 papers in Radiology, Nuclear Medicine and Imaging and 9 papers in Genetics. Recurrent topics in Ashok J. Kumar's work include Glioma Diagnosis and Treatment (9 papers), Advanced MRI Techniques and Applications (5 papers) and Advanced Neuroimaging Techniques and Applications (5 papers). Ashok J. Kumar is often cited by papers focused on Glioma Diagnosis and Treatment (9 papers), Advanced MRI Techniques and Applications (5 papers) and Advanced Neuroimaging Techniques and Applications (5 papers). Ashok J. Kumar collaborates with scholars based in United States, India and Switzerland. Ashok J. Kumar's co-authors include Gregory N. Fuller, Norman E. Leeds, Raymond Sawaya, Victor A. Levin, Pamela Van Tassel, Moshe Maor, John de Groot, Yang Ji, Karina Eterovic and Charles A. Conrad and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and American Journal of Psychiatry.

In The Last Decade

Ashok J. Kumar

44 papers receiving 2.2k 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.

Malignant Gliomas: MR Imaging Spectrum of Radiation Therapy- and Chemotherapy-induced Necrosis of the Brain after Treatment

2000 507 citations Ashok J. Kumar, Norman E. Leeds et al. Radiology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ashok J. Kumar United States	22	803	743	489	361	270	45	2.3k
Naohiro Tsuyuguchi Japan	22	819 1.0×	754 1.0×	390 0.8×	433 1.2×	426 1.6×	104	2.1k
Katsuyoshi Mineura Japan	25	908 1.1×	858 1.2×	368 0.8×	203 0.6×	484 1.8×	146	2.2k
Benoît Pirotte Belgium	29	1.0k 1.3×	1.2k 1.6×	323 0.7×	337 0.9×	700 2.6×	70	2.4k
Emerson L. Gasparetto Brazil	35	1.2k 1.5×	771 1.0×	858 1.8×	568 1.6×	474 1.8×	213	4.2k
Seiji Hama Japan	25	405 0.5×	479 0.6×	251 0.5×	285 0.8×	395 1.5×	71	2.3k
R. Schober Germany	27	883 1.1×	520 0.7×	330 0.7×	379 1.0×	385 1.4×	102	2.8k
K. Bise Germany	23	356 0.4×	856 1.2×	564 1.2×	127 0.4×	407 1.5×	58	2.2k
Suzanne Laughlin Canada	30	545 0.7×	840 1.1×	486 1.0×	185 0.5×	500 1.9×	82	2.5k
Futoshi Mihara Japan	29	676 0.8×	359 0.5×	279 0.6×	453 1.3×	749 2.8×	108	2.7k

Countries citing papers authored by Ashok J. Kumar

Since Specialization

Citations

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

Fields of papers citing papers by Ashok J. Kumar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ashok J. Kumar. 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 Ashok J. Kumar. The network helps show where Ashok J. Kumar may publish in the future.

Co-authorship network of co-authors of Ashok J. Kumar

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

Kumar, Ashok J., et al.. (2024). Correlation between Antiviral and Steroid Therapies, COVID-19 Severity, and patient Outcomes: A Cross-Sectional Study. 17(12). 23–27. 1 indexed citations

Zinn, Pascal O., Sanjay K. Singh, Aikaterini Kotrotsou, et al.. (2018). A Coclinical Radiogenomic Validation Study: Conserved Magnetic Resonance Radiomic Appearance of Periostin-Expressing Glioblastoma in Patients and Xenograft Models. Clinical Cancer Research. 24(24). 6288–6299. 80 indexed citations

Hassan, Islam, Aikaterini Kotrotsou, Srishti Abrol, et al.. (2017). Silent Sentence Completion Shows Superiority Localizing Wernicke’s Area and Activation Patterns of Distinct Language Paradigms Correlate with Genomics: Prospective Study. Scientific Reports. 7(1). 12054–12054. 8 indexed citations

Kumar, Vinodh A., Jackson Hamilton, L. Anne Hayman, et al.. (2013). Deformable Anatomic Templates Improve Analysis of Gliomas With Minimal Mass Effect in Eloquent Areas. Neurosurgery. 73(3). 534–542. 7 indexed citations

Vu, Thinh, Nandita Guha‐Thakurta, Robyn K. Harrell, et al.. (2011). Imaging Characteristics of Hyperfunctioning Parathyroid Adenomas Using Multiphase Multidectector Computed Tomography. Journal of Computer Assisted Tomography. 35(5). 560–567. 24 indexed citations

Groot, John de, Gregory N. Fuller, Ashok J. Kumar, et al.. (2010). Tumor invasion after treatment of glioblastoma with bevacizumab: radiographic and pathologic correlation in humans and mice. Neuro-Oncology. 12(3). 233–242. 412 indexed citations

Dinesh, Diwakar Singh, Arvind Singh, Vijay Kumar, et al.. (2009). Emergence periodicity of Phlebotomus argentipes annandale and brunetti (Diptera: psychodidae): A laboratory study. Journal of Parasitic Diseases. 33(1-2). 23–27. 3 indexed citations

Sun, Phillip Zhe, Thomas Benner, Ashok J. Kumar, & A. Gregory Sorensen. (2008). Investigation of optimizing and translating pH‐sensitive pulsed‐chemical exchange saturation transfer (CEST) imaging to a 3T clinical scanner. Magnetic Resonance in Medicine. 60(4). 834–841. 127 indexed citations

Kumar, Ashok J., et al.. (2004). Effect of coffee pulp compost on growth and yield attributes of bhendi (Abelmoschus esculentus L.).. 32. 73–77.

10.

Ma, Jingfei, Sanjay K. Singh, Ashok J. Kumar, Norman E. Leeds, & Jiping Zhan. (2004). T2‐weighted spine imaging with a fast three‐point dixon technique: Comparison with chemical shift selective fat suppression. Journal of Magnetic Resonance Imaging. 20(6). 1025–1029. 47 indexed citations

11.

Kumar, Ashok J., et al.. (2003). Leptomeningeal Carcinomatosis Originating from Gastric Cancer. American Journal of Clinical Oncology. 26(2). 165–170. 32 indexed citations

12.

Chan, Ling Ling, Ashok J. Kumar, Norman E. Leeds, & Axel Forman. (2002). Post-epidural analgesia spinal cord infarction: MRI correlation. Acta Neurologica Scandinavica. 105(4). 344–348. 13 indexed citations

13.

Zhou, Xiaohong Joe, Norman E. Leeds, Graeme C. McKinnon, & Ashok J. Kumar. (2002). Characterization of benign and metastatic vertebral compression fractures with quantitative diffusion MR imaging.. American Journal of Neuroradiology. 23(1). 165–70. 111 indexed citations

14.

Leeds, Norman E., Ashok J. Kumar, Xiaohong Joe Zhou, & Graeme C. McKinnon. (2000). Magnetic Resonance Imaging of Benign Spinal Lesions Simulating Metastasis: Role of Diffusion-Weighted Imaging. Topics in Magnetic Resonance Imaging. 11(4). 224–234. 39 indexed citations

15.

Kumar, Ashok J., Norman E. Leeds, Gregory N. Fuller, et al.. (2000). Malignant Gliomas: MR Imaging Spectrum of Radiation Therapy- and Chemotherapy-induced Necrosis of the Brain after Treatment. Radiology. 217(2). 377–384. 507 indexed citations breakdown →

16.

Kumar, Ashok J., et al.. (2000). Imaging and clinical spectrum of rhabdomyosarcoma in children. Clinical Imaging. 24(5). 257–262. 36 indexed citations

17.

Yousem, David M., John A. Arrington, Ashok J. Kumar, & R. Nick Bryan. (1990). Bright lesions on sellar/parasellar T1-weighted scans. Clinical Imaging. 14(2). 99–105. 17 indexed citations

18.

Yousem, David M., J A Arrington, S. James Zinreich, Ashok J. Kumar, & R. Nick Bryan. (1989). Pituitary adenomas: possible role of bromocriptine in intratumoral hemorrhage.. Radiology. 170(1). 239–243. 46 indexed citations

19.

Zinreich, S. James, David W. Kennedy, Ashok J. Kumar, et al.. (1988). MR Imaging of Normal Nasal Cycle. Journal of Computer Assisted Tomography. 12(6). 1014–1019. 48 indexed citations

20.

Reiss, Allan L., et al.. (1988). Preliminary communication: Neuroanatomical variations of the posterior fossa in men with the fragile X (Martin‐Bell) syndrome. American Journal of Medical Genetics. 31(2). 407–414. 58 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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