World's Best Scientists 2026 revealed!

D-Index & Metrics

Computer Science

D-Index
64
Citations
12585
World Ranking
2654
National Ranking
1318

Grant T. Gullberg publication distribution in Computer Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Computer Science in 2026. The highlighted bar marks where Grant T. Gullberg sits on this spectrum.

32–41 publications: 7 scientists 42–51 publications: 22 scientists 52–61 publications: 82 scientists 62–71 publications: 134 scientists 72–81 publications: 249 scientists 82–91 publications: 324 scientists 92–101 publications: 421 scientists 102–111 publications: 420 scientists 112–121 publications: 497 scientists 122–131 publications: 544 scientists 132–141 publications: 555 scientists 142–151 publications: 609 scientists 152–161 publications: 559 scientists 162–171 publications: 534 scientists 172–181 publications: 556 scientists 182–191 publications: 583 scientists 192–201 publications: 519 scientists 202–211 publications: 508 scientists 212–221 publications: 490 scientists 222–231 publications: 437 scientists 232–241 publications: 423 scientists 242–251 publications: 408 scientists 252–261 publications: 377 scientists 262–271 publications: 301 scientists 272–281 publications: 335 scientists 282–291 publications: 320 scientists 292–301 publications: 293 scientists 302–311 publications: 250 scientists 312–321 publications: 238 scientists 322–331 publications: 206 scientists 332–341 publications: 209 scientists 342–351 publications: 208 scientists 352–361 publications: 162 scientists 362–371 publications: 176 scientists 372–381 publications: 127 scientists 382–391 publications: 158 scientists 392–401 publications: 128 scientists 402–411 publications: 104 scientists 412–421 publications: 94 scientists 422–431 publications: 99 scientists 432–441 publications: 83 scientists 442–451 publications: 108 scientists 452–461 publications: 73 scientists 462–471 publications: 77 scientists 472–481 publications: 69 scientists 482–491 publications: 84 scientists 492–501 publications: 62 scientists 502–511 publications: 54 scientists 512–521 publications: 57 scientists 522–531 publications: 51 scientists 532–541 publications: 51 scientists 542–551 publications: 32 scientists 552–561 publications: 38 scientists 562–571 publications: 28 scientists 572–581 publications: 43 scientists 582–591 publications: 33 scientists 592–601 publications: 41 scientists 602–611 publications: 32 scientists 612–621 publications: 28 scientists 622–631 publications: 25 scientists 632–641 publications: 27 scientists 642–651 publications: 17 scientists 652–661 publications: 20 scientists 662–671 publications: 17 scientists 672–681 publications: 15 scientists 682–691 publications: 14 scientists 692–701 publications: 21 scientists 702–711 publications: 13 scientists 712–721 publications: 12 scientists 722–731 publications: 19 scientists 732–741 publications: 14 scientists 742–751 publications: 12 scientists 752–761 publications: 10 scientists 762–771 publications: 10 scientists 772–781 publications: 11 scientists 782–791 publications: 10 scientists 792–801 publications: 11 scientists 802–811 publications: 8 scientists 812–821 publications: 8 scientists 822–831 publications: 7 scientists 832–841 publications: 11 scientists 842–851 publications: 10 scientists 852–861 publications: 5 scientists 862–871 publications: 9 scientists 872–881 publications: 4 scientists 882–891 publications: 6 scientists 892–901 publications: 3 scientists 902–911 publications: 6 scientists 912–921 publications: 3 scientists 922–931 publications: 2 scientists 932–941 publications: 2 scientists 942–951 publications: 2 scientists 952–961 publications: 3 scientists 962–971 publications: 3 scientists 972–981 publications: 3 scientists 982–990 publications: 5 scientists 991+ publications: 100 scientists
32 publications 991+

This scientist: 407 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 991 publications or more.

Grant T. Gullberg D-index placement in Computer Science in 2026

The chart shows the D-index (discipline H-index) distribution of Computer Science scientists ranked by Research.com in 2026. The highlighted bar marks where Grant T. Gullberg sits on this spectrum.

30–31 D-Index: 879 scientists 32–33 D-Index: 983 scientists 34–35 D-Index: 918 scientists 36–37 D-Index: 990 scientists 38–39 D-Index: 968 scientists 40–41 D-Index: 907 scientists 42–43 D-Index: 821 scientists 44–45 D-Index: 763 scientists 46–47 D-Index: 689 scientists 48–49 D-Index: 543 scientists 50–51 D-Index: 543 scientists 52–53 D-Index: 518 scientists 54–55 D-Index: 500 scientists 56–57 D-Index: 458 scientists 58–59 D-Index: 400 scientists 60–61 D-Index: 337 scientists 62–63 D-Index: 308 scientists 64–65 D-Index: 292 scientists 66–67 D-Index: 249 scientists 68–69 D-Index: 213 scientists 70–71 D-Index: 192 scientists 72–73 D-Index: 189 scientists 74–75 D-Index: 165 scientists 76–77 D-Index: 139 scientists 78–79 D-Index: 119 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 113 scientists 84–85 D-Index: 88 scientists 86–87 D-Index: 87 scientists 88–89 D-Index: 75 scientists 90–91 D-Index: 69 scientists 92–93 D-Index: 57 scientists 94–95 D-Index: 46 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 34 scientists 100–101 D-Index: 36 scientists 102–103 D-Index: 27 scientists 104–105 D-Index: 37 scientists 106–107 D-Index: 18 scientists 108–109 D-Index: 31 scientists 110–111 D-Index: 19 scientists 112–113 D-Index: 16 scientists 114–115 D-Index: 12 scientists 116–117 D-Index: 20 scientists 118–119 D-Index: 15 scientists 120–121 D-Index: 5 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 8 scientists 126–127 D-Index: 5 scientists 128–129 D-Index: 7 scientists 130 D-Index: 3 scientists 131+ D-Index: 98 scientists
30 D-Index 131+

This scientist: 64 D-Index — 82nd percentile

82% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 131 D-Index or more.

Research.com Recognitions

  • 2004 - IEEE Fellow For contributions to medical imaging technologies.

Overview

Grant T. Gullberg is affiliated with the University of California, San Francisco in the United States. Their research primarily focuses on the field of Medicine with a strong emphasis on Radiology, Nuclear Medicine and Imaging. Additional subfields include Biomedical Engineering, Radiation, Cardiology and Cardiovascular Medicine, and Surgery.

The scientist's research in Medical Imaging Techniques and Applications spans various advanced imaging modalities, including Advanced X-ray and CT Imaging, Advanced MRI Techniques and Applications, Radiomics and Machine Learning in Medical Imaging, Radiation Detection and Scintillator Technologies, Cardiac Imaging and Diagnostics, and Advanced Neuroimaging Techniques and Applications.

Recent published papers by Grant T. Gullberg include:

  • Direct Attenuation Correction Using Deep Learning for Cardiac SPECT: A Feasibility Study, 2021, Journal of Nuclear Medicine
  • Accuracy and Reproducibility of Myocardial Blood Flow Quantification by Single Photon Emission Computed Tomography Imaging in Patients With Known or Suspected Coronary Artery Disease, 2022, Circulation Cardiovascular Imaging
  • CT-less Direct Correction of Attenuation and Scatter in the Image Space Using Deep Learning for Whole-Body FDG PET: Potential Benefits and Pitfalls, 2020, Radiology Artificial Intelligence
  • Compton and Proximity Imaging of Ac In Vivo With a CZT Gamma Camera: A Proof of Principle With Simulations, 2022, IEEE Transactions on Radiation and Plasma Medical Sciences
  • Evaluation of a variable-aperture full-ring SPECT system using large-area pixelated CZT modules: A simulation study for brain SPECT applications, 2021, Medical Physics

Frequent co-authors in Grant T. Gullberg's work include Youngho Seo, Yoonsuk Huh, Uttam Shrestha, Jaewon Yang, and Qiu Huang.

The scientist has published in various venues, with the most frequent being Medical Physics, IEEE Transactions on Medical Imaging, IEEE Transactions on Radiation and Plasma Medical Sciences, Circulation Cardiovascular Imaging, and Journal of Nuclear Medicine.

Grant T. Gullberg was awarded the IEEE Fellow distinction in 2004 for contributions to medical imaging technologies.

Best Publications

  • Correction of nonuniform attenuation in cardiac SPECT imaging.

    B. M.W. Tsui;G. T. Gullberg;E. R. Edgerton;J. G. Ballard

  • Three-dimensional iterative reconstruction algorithms with attenuation and geometric point response correction

    G.L. Zeng;G.T. Gullberg;B.M.W. Tsui;J.A. Terry

  • Unmatched projector/backprojector pairs in an iterative reconstruction algorithm

    G.L. Zeng;G.T. Gullberg

  • Implementation of simultaneous attenuation and detector response correction in SPECT

    B.M.W. Tsui;H.-B. Hu;D.R. Gilland;G.T. Gullberg

  • Emission computer assisted tomography with single-photon and positron annihilation photon emitters.

    Thomas F. Budinger;Stephen E. Derenzo;Grant T. Gullberg;William L. Greenberg

  • Non-uniform attenuation correction using simultaneous transmission and emission converging tomography

    C.-H. Tung;G.T. Gullberg;G.L. Zeng;P.E. Christian

  • An attenuated projector-backprojector for iterative SPECT reconstruction

    G T Gullberg;R H Huesman;J A Malko;N J Pelc

  • THE USE OF FILTERING METHODS TO COMPENSATE FOR CONSTANT ATTENUATION IN SINGLE-PHOTON EMISSION COMPUTED TOMOGRAPHY

    G T Gullberg;T F Budinger

  • Total variation regulated EM algorithm [SPECT reconstruction]

    V.Y. Panin;G.L. Zeng;G.T. Gullberg

  • Reconstruction and visualization of fiber and laminar structure in the normal human heart from ex vivo diffusion tensor magnetic resonance imaging (DTMRI) data.

    Damien Rohmer;Arkadiusz Sitek;Grant T. Gullberg

  • QUANTITATIVE POTENTIALS OF DYNAMIC EMISSION COMPUTED TOMOGRAPHY

    T. F. Budinger;S. E. Derenzo;W. L. Greenberg;G. T. Gullberg

  • Time-of-flight MR flow imaging: selective saturation recovery with gradient refocusing.

    F W Wehrli;A Shimakawa;G T Gullberg;J R MacFall

  • Direct least-squares estimation of spatiotemporal distributions from dynamic SPECT projections using a spatial segmentation and temporal B-splines

    B.W. Reutter;G.T. Gullberg;R.H. Huesman

  • Evaluation of cardiac cone-beam single photon emission computed tomography using observer performance experiments and receiver operating characteristic analysis.

    Benjamin M. W. Tsui;James A. Terry;James A. Terry;Grant T. Gullberg

  • Emission computed tomography

    Unknown

  • SPECT liver imaging using an iterative attenuation correction algorithm and an external flood source

    J.A. Malko;R.L. Van Heertum;G.T. Gullberg;W.P. Kowalsky

  • Application of spherical harmonics to image reconstruction for the Compton camera.

    Roman Basko;Gengsheng L Zeng;Grant T Gullberg

  • Review of convergent beam tomography in single photon emission computed tomography

    G T Gullberg;G L Zeng;F L Datz;P E Christian

  • The geometric transfer function for cone and fan beam collimators

    B M W Tsui;G T Gullberg

  • MR vascular imaging with a fast gradient refocusing pulse sequence and reformatted images from transaxial sections.

    G T Gullberg;F W Wehrli;A Shimakawa;M A Simons

  • A cone-beam tomography algorithm for orthogonal circle-and-line orbit.

    Gengsheng L Zeng;Grant T Gullberg

  • Total variation regulated EM algorithm

    V.Y. Panin;G.L. Zeng;G.T. Gullberg

  • Signal-to-noise efficiency in magnetic resonance imaging

    Dennis L. Parker;Grant T. Gullberg

Frequent Co-Authors

Gengsheng L. Zeng
Gengsheng L. Zeng Utah Valley University
Benjamin M. W. Tsui
Benjamin M. W. Tsui Johns Hopkins University
Jeffrey A. Weiss
Jeffrey A. Weiss University of Utah
Debasis Mitra
Debasis Mitra Columbia University
Michel Defrise
Michel Defrise Vrije Universiteit Brussel
Norbert J. Pelc
Norbert J. Pelc Stanford University
Stephen L. Bacharach
Stephen L. Bacharach University of California, San Francisco
Jinyi Qi
Jinyi Qi University of California, Davis
Gary H. Glover
Gary H. Glover Stanford University

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