Daniel J. O’Brien

1.1k total citations
25 papers, 839 citations indexed

About

Daniel J. O’Brien is a scholar working on Radiation, Pulmonary and Respiratory Medicine and Biomedical Engineering. According to data from OpenAlex, Daniel J. O’Brien has authored 25 papers receiving a total of 839 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Radiation, 10 papers in Pulmonary and Respiratory Medicine and 5 papers in Biomedical Engineering. Recurrent topics in Daniel J. O’Brien's work include Advanced Radiotherapy Techniques (11 papers), Radiation Therapy and Dosimetry (10 papers) and Radiation Detection and Scintillator Technologies (6 papers). Daniel J. O’Brien is often cited by papers focused on Advanced Radiotherapy Techniques (11 papers), Radiation Therapy and Dosimetry (10 papers) and Radiation Detection and Scintillator Technologies (6 papers). Daniel J. O’Brien collaborates with scholars based in United States, Ireland and France. Daniel J. O’Brien's co-authors include Gabriel O. Sawakuchi, George Carman, David A. Roberts, Geoffrey S. Ibbott, Ronald S. Kuzo, Randolph J. Lipchik, Yü Liu, Lawrence R. Goodman, Timothy L. McAuliffe and Jessica A. Gorman and has published in prestigious journals such as Nature, Journal of Biological Chemistry and Applied Physics Letters.

In The Last Decade

Daniel J. O’Brien

25 papers receiving 820 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Daniel J. O’Brien United States 13 351 323 288 149 140 25 839
Mario Reiser Germany 14 80 0.2× 85 0.3× 60 0.2× 25 0.2× 45 0.3× 42 512
Yohei Inaba Japan 24 186 0.5× 224 0.7× 824 2.9× 2 0.0× 103 0.7× 96 1.4k
Aiming Lu United States 19 36 0.1× 131 0.4× 662 2.3× 2 0.0× 69 0.5× 56 952
F. Röhner Switzerland 8 24 0.1× 119 0.4× 153 0.5× 4 0.0× 152 1.1× 11 1.1k
Philippe Coulon France 19 82 0.2× 94 0.3× 909 3.2× 2 0.0× 12 0.1× 32 1.2k
Krishnarao Tangella United States 16 143 0.4× 51 0.2× 73 0.3× 2 0.0× 76 0.5× 37 952
Noboru Nakano Japan 12 54 0.2× 69 0.2× 28 0.1× 2 0.0× 138 1.0× 45 643
C. C. Chamberlain United States 15 191 0.5× 177 0.5× 202 0.7× 1 0.0× 10 0.1× 30 643
Lee E. Farr United States 15 190 0.5× 153 0.5× 339 1.2× 2 0.0× 63 0.5× 58 1.5k
Scott Penfold Australia 12 461 1.3× 547 1.7× 296 1.0× 36 0.3× 50 684

Countries citing papers authored by Daniel J. O’Brien

Since Specialization
Citations

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

Fields of papers citing papers by Daniel J. O’Brien

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Daniel J. O’Brien. 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 Daniel J. O’Brien. The network helps show where Daniel J. O’Brien may publish in the future.

Co-authorship network of co-authors of Daniel J. O’Brien

This figure shows the co-authorship network connecting the top 25 collaborators of Daniel J. O’Brien. A scholar is included among the top collaborators of Daniel J. O’Brien 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 Daniel J. O’Brien. Daniel J. O’Brien 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.
O’Brien, Daniel J. & Gabriel O. Sawakuchi. (2017). Monte Carlo study of the chamber-phantom air gap effect in a magnetic field. Medical Physics. 44(7). 3830–3838. 48 indexed citations
2.
O’Brien, Daniel J., et al.. (2017). Dosimetry in the presence of strong magnetic fields. Journal of Physics Conference Series. 847. 12055–12055. 17 indexed citations
3.
4.
O’Brien, Daniel J., David A. Roberts, Geoffrey S. Ibbott, & Gabriel O. Sawakuchi. (2016). Reference dosimetry in magnetic fields: formalism and ionization chamber correction factors. Medical Physics. 43(8Part1). 4915–4927. 141 indexed citations
5.
O’Brien, Daniel J., et al.. (2016). Phase correlation applied to the 3D registration of CT and CBCT image volumes. Physica Medica. 32(4). 618–624. 4 indexed citations
6.
Wen, Zhifei, et al.. (2016). SU-G-BRB-08: Investigation On the Magnetic Field Effect On TLDs, OSLDs, and Gafchromic Films Using An MR-Linac. Medical Physics. 43(6Part24). 3632–3632. 8 indexed citations
7.
O’Brien, Daniel J. & Gabriel O. Sawakuchi. (2016). TH-CD-BRA-07: MRI-Linac Dosimetry: Parameters That Change in a Magnetic Field. Medical Physics. 43(6Part45). 3874–3874. 2 indexed citations
8.
O’Brien, Daniel J., Luis León Vintró, & Brendan McClean. (2015). Small field detector correction factors kQclin,Qmsrfclin,fmsr for silicon-diode and diamond detectors with circular 6 MV fields derived using both empirical and numerical methods. Medical Physics. 43(1). 411–423. 46 indexed citations
9.
10.
O’Brien, Daniel J., Brendan McClean, & Luis León Vintró. (2012). A source occlusion independent method for reporting small field output factors. Physica Medica. 28(4). 340–340. 1 indexed citations
11.
O’Brien, Daniel J., Franz Brückert, Béatrice Schaack, et al.. (2011). Diamagnetically trapped arrays of living cells above micromagnets. Lab on a Chip. 11(18). 3153–3153. 45 indexed citations
12.
Dempsey, Nora M., et al.. (2010). Diamagnetic trapping of cells above micro magnets. HAL (Le Centre pour la Communication Scientifique Directe). 1 indexed citations
13.
Kustov, Mikhail, P. Laczkowski, K. Hasselbach, et al.. (2010). Magnetic characterization of micropatterned Nd–Fe–B hard magnetic films using scanning Hall probe microscopy. Journal of Applied Physics. 108(6). 48 indexed citations
14.
O’Brien, Daniel J., et al.. (2008). A Dual Metaheuristic Solution to the Min-RWA Problem. 1–3. 5 indexed citations
15.
Yarlagadda, Shridhar, et al.. (2008). Normal Incidence Free Space Optical Data Porting to Embedded Communication Links. IEEE Transactions on Components and Packaging Technologies. 31(1). 32–38. 9 indexed citations
16.
Yao, Peng, Garrett J. Schneider, Janusz Murakowski, et al.. (2004). Multilayer three-dimensional photolithography with traditional planar method. Applied Physics Letters. 85(17). 3920–3922. 16 indexed citations
17.
Park, Tae‐Sik, Daniel J. O’Brien, & George Carman. (2003). Phosphorylation of CTP Synthetase on Ser36, Ser330, Ser354, and Ser454 Regulates the Levels of CTP and Phosphatidylcholine Synthesis in Saccharomyces cerevisiae. Journal of Biological Chemistry. 278(23). 20785–20794. 40 indexed citations
18.
Goodman, Lawrence R., Randolph J. Lipchik, Ronald S. Kuzo, et al.. (2000). Subsequent Pulmonary Embolism: Risk after a Negative Helical CT Pulmonary Angiogram— Prospective Comparison with Scintigraphy. Radiology. 215(2). 535–542. 182 indexed citations
19.
Alladio, F., F. Crisanti, Alessandro Mancuso, et al.. (1999). Correlation among geodesic curvature of the magnetic field lines, plasma rotation and improved confinement regimes in present tokamak experiments. Physics of Plasmas. 6(6). 2472–2485. 2 indexed citations
20.
Ostrander, Darin, Daniel J. O’Brien, Jessica A. Gorman, & George Carman. (1998). Effect of CTP Synthetase Regulation by CTP on Phospholipid Synthesis in Saccharomyces cerevisiae. Journal of Biological Chemistry. 273(30). 18992–19001. 109 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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