A maximum likelihood proton path formalism for application in proton computed tomography RW Schulte, SN Penfold, JT Tafas, KE Schubert Medical physics 35 (11), 4849-4856, 2008 | 129 | 2008 |

Total variation superiorization schemes in proton computed tomography image reconstruction SN Penfold, RW Schulte, Y Censor, AB Rosenfeld Medical physics 37 (11), 5887-5895, 2010 | 93 | 2010 |

Monte Carlo investigation of the increased radiation deposition due to gold nanoparticles using kilovoltage and megavoltage photons in a 3D randomized cell model M Douglass, E Bezak, S Penfold Medical physics 40 (7), 071710, 2013 | 70 | 2013 |

Review of Geant4-DNA applications for micro and nanoscale simulations S Incerti, M Douglass, S Penfold, S Guatelli, E Bezak Physica Medica 32 (10), 1187-1200, 2016 | 48 | 2016 |

Image reconstruction and Monte Carlo simulations in the development of proton computed tomography for applications in proton radiation therapy SN Penfold | 43 | 2010 |

A more accurate reconstruction system matrix for quantitative proton computed tomography SN Penfold, AB Rosenfeld, RW Schulte, KE Schubert Medical physics 36 (10), 4511-4518, 2009 | 43 | 2009 |

Block-iterative and string-averaging projection algorithms in proton computed tomography image reconstruction S Penfold, RW Schulte, Y Censor, V Bashkirov, S McAllister, K Schubert, ... | 40 | 2010 |

Systems and methodologies for proton computed tomography Y Censor, SN Penfold, RW Schulte US Patent 9,207,193, 2015 | 31 | 2015 |

Dosimetric comparison of stopping power calibration with dual‐energy CT and single‐energy CT in proton therapy treatment planning J Zhu, SN Penfold Medical physics 43 (6Part1), 2845-2854, 2016 | 28 | 2016 |

Development of a randomized 3D cell model for Monte Carlo microdosimetry simulations M Douglass, E Bezak, S Penfold Medical physics 39 (6Part1), 3509-3519, 2012 | 26 | 2012 |

High performance computing for three dimensional proton computed tomography (HPC-PCT) N Karonis, G Coutrakon, K Duffin, B Erdelyi, K Naglich, S Penfold, ... US Patent 8,766,180, 2014 | 17 | 2014 |

Development of proton computed tomography for applications in proton therapy V Bashkirov, R Schulte, G Coutrakon, B Erdelyi, K Wong, H Sadrozinski, ... AIP Conference Proceedings 1099 (1), 460-463, 2009 | 17 | 2009 |

Sparsity constrained split feasibility for dose-volume constraints in inverse planning of intensity-modulated photon or proton therapy S Penfold, R Zalas, M Casiraghi, M Brooke, Y Censor, R Schulte Physics in Medicine & Biology 62 (9), 3599, 2017 | 15 | 2017 |

Detector development for proton computed tomography (pCT) HFW Sadrozinski, V Bashkirov, B Colby, G Coutrakon, B Erdelyi, D Fusi, ... 2011 IEEE Nuclear Science Symposium Conference Record, 4457-4461, 2011 | 15 | 2011 |

Proton computed tomography: Update on current status VA Bashkirov, RW Schulte, SN Penfold, AB Rosenfeld 2007 IEEE Nuclear Science Symposium Conference Record 6, 4685-4688, 2007 | 12 | 2007 |

Techniques in iterative proton CT image reconstruction S Penfold, Y Censor Sensing and Imaging 16 (1), 19, 2015 | 11 | 2015 |

Mounting fitting of heat sink and method of removing the same S Manabe, K Sato US Patent 6,711,019, 2004 | 8 | 2004 |

Geometrical optimization of a particle tracking system for proton computed tomography SN Penfold, AB Rosenfeld, RW Schulte, HFW Sadrozinksi Radiation Measurements 46 (12), 2069-2072, 2011 | 7 | 2011 |

The effect of tissue inhomogeneities on the accuracy of proton path reconstruction for proton computed tomography K Wong, B Erdelyi, R Schulte, V Bashkirov, G Coutrakon, H Sadrozinski, ... AIP Conference Proceedings 1099 (1), 476-480, 2009 | 7 | 2009 |

Blockiterative and string-averaging projection algorithms in proton computed tomography image reconstruction of Biomedical Mathematics: Promising Directions in Imaging, Therapy … SN Penfold, RW Schulte, Y Censor, V Bashkirov, S McAllister, ... Y. Censor, M. Jiang and G. Wang, Madison, WI: Medical Physics Publishing, 2009 | 7 | 2009 |