OLEG NVASSILIEVOLEG N VASSILIEV11747VASSILIEV, OLEG NAssociate Professorprns:coAuthorOfcoauthor ofFaculty Rankprns:fullNamefull nameprns:hasAuthorListauthor listprns:hasFacultyRankhas faculty rankprns:hasNetworkhas networkprns:hasPublicationVenuepublished inprns:informationResourceReferenceinformation resource referenceprns:isPrimaryPositionis primary positionprns:maxWeightmaximum weightprns:medlineTAjournal title abbreviationprns:meshDescriptorUIMeSH DescriptorUIprns:meshSemanticGroupNameMeSH semantic group nameprns:minWeightminimum weightprns:numberOfAuthorsnumber of authorsprns:numberOfConnectionsnumber of connectionsprns:numberOfPublicationsnumber of publicationsprns:personIdPerson IDprns:personInPrimaryPositionperson in primary positionprns:positionInDepartmentposition in departmentprns:positionInDivisionposition in divisionprns:predicateNodepredicate nodeprns:publicationDatepublication dateprns:similarTosimilar toprns:sortOrdersort orderprns:uniquenessWeightuniqueness weightprns:yearyearAcademic ArticleArticleDocumentbibo:pmidPubMed IdentifierAddressvivo:address1address line 1vivo:addressCitycityvivo:addressPostalCodepostal codevivo:addressStatestate or provincevivo:authorInAuthorshipselected publicationsvivo:authorRankauthor rank in publicationAuthorshipDepartmentDivisionvivo:hasResearchArearesearch areasvivo:hrJobTitleHR job titleInformation Resourcevivo:linkedAuthorlinked authorvivo:linkedInformationResourcelinked information resourcevivo:mailingAddressmailing addressvivo:personInPositionpositionsPositionvivo:positionInOrganizationposition in organizationvivo:preferredTitlepreferred titlerdf:predicatepredicaterdf:typetyperdfs:labellabelConceptAgentfoaf:firstNamefirst namefoaf:lastNamelast nameOrganizationPerson15719964Cho SH, Vassiliev ON, Lee S, Liu HH, Ibbott GS, Mohan RMedical physicsReference photon dosimetry data and reference phase space data for the 6 MV photon beam from varian clinac 2100 series linear accelerators. Med Phys. 2005 Jan; 32(1):137-48.Med Phys2005-01-01T00:00:002005Reference photon dosimetry data and reference phase space data for the 6 MV photon beam from varian clinac 2100 series linear accelerators.15984678Beddar AS, Briere TM, Mourtada FA, Vassiliev ON, Liu HH, Mohan RMedical physicsMonte Carlo calculations of the absorbed dose and energy dependence of plastic scintillators. Med Phys. 2005 May; 32(5):1265-9.Med Phys2005-05-01T00:00:002005Monte Carlo calculations of the absorbed dose and energy dependence of plastic scintillators.16532947P?nisch F, Titt U, Kry SF, Vassiliev ON, Mohan RMedical physicsMCNPX simulation of a multileaf collimator. Med Phys. 2006 Feb; 33(2):402-4.Med Phys2006-02-01T00:00:002006MCNPX simulation of a multileaf collimator.16872081P?nisch F, Titt U, Vassiliev ON, Kry SF, Mohan RMedical physicsProperties of unflattened photon beams shaped by a multileaf collimator. Med Phys. 2006 Jun; 33(6):1738-46.Med Phys2006-06-01T00:00:002006Properties of unflattened photon beams shaped by a multileaf collimator.16878579Jang SY, Vassiliev ON, Liu HH, Mohan R, Siebers JVMedical physicsDevelopment and commissioning of a multileaf collimator model in monte carlo dose calculations for intensity-modulated radiation therapy. Med Phys. 2006 Mar; 33(3):770-81.Med Phys2006-03-01T00:00:002006Development and commissioning of a multileaf collimator model in monte carlo dose calculations for intensity-modulated radiation therapy.17681966Vassiliev ON, Titt U, Kry SF, Mohan R, Gillin MTRadiation protection dosimetryRadiation safety survey on a flattening filter-free medical accelerator. Radiat Prot Dosimetry. 2007; 124(2):187-90.Radiat Prot Dosimetry2007-08-06T00:00:002007Radiation safety survey on a flattening filter-free medical accelerator.17926952Kry SF, Titt U, Followill D, P?nisch F, Vassiliev ON, White RA, Stovall M, Salehpour MMedical physicsA Monte Carlo model for out-of-field dose calculation from high-energy photon therapy. Med Phys. 2007 Sep; 34(9):3489-99.Med Phys2007-09-01T00:00:002007A Monte Carlo model for out-of-field dose calculation from high-energy photon therapy.18722273Vassiliev ON, Wareing TA, Davis IM, McGhee J, Barnett D, Horton JL, Gifford K, Failla G, Titt U, Mourtada FInternational journal of radiation oncology, biology, physicsFeasibility of a multigroup deterministic solution method for three-dimensional radiotherapy dose calculations. Int J Radiat Oncol Biol Phys. 2008 Sep 01; 72(1):220-7.Int J Radiat Oncol Biol Phys2008-09-01T00:00:002008Feasibility of a multigroup deterministic solution method for three-dimensional radiotherapy dose calculations.Radiation OncologyRadiation PhysicsMD AndersonLAURENCE EDWARDCOURTLAURENCE EDWARD COURT8991COURT, LAURENCE EDWARDAssistant ProfessorSTEPHEN FKRYSTEPHEN F KRY8918KRY, STEPHEN FAssociate ProfessorRADHEMOHANRADHE MOHAN8990MOHAN, RADHEProfessorSAMBEDDARSAM BEDDAR9007BEDDAR, SAMProfessorFALKPOENISCHFALK POENISCH9147POENISCH, FALKAssociate ProfessorDAVID SFOLLOWILLDAVID S FOLLOWILL8527FOLLOWILL, DAVID SProfessorUWETITTUWE TITT9102TITT, UWEAssociate ProfessorDAVID RANDALLGROSSHANSDAVID RANDALL GROSSHANS9270GROSSHANS, DAVID RANDALLAssociate Professor16872067Titt U, Vassiliev ON, P?nisch F, Dong L, Liu H, Mohan RMedical physicsA flattening filter free photon treatment concept evaluation with Monte Carlo. Med Phys. 2006 Jun; 33(6):1595-602.Med Phys2006-06-01T00:00:002006A flattening filter free photon treatment concept evaluation with Monte Carlo.17022221Titt U, Vassiliev ON, P?nisch F, Kry SF, Mohan RMedical physicsMonte Carlo study of backscatter in a flattening filter free clinical accelerator. Med Phys. 2006 Sep; 33(9):3270-3.Med Phys2006-09-01T00:00:002006Monte Carlo study of backscatter in a flattening filter free clinical accelerator.20305334Kry SF, Vassiliev ON, Mohan RPhysics in medicine and biologyOut-of-field photon dose following removal of the flattening filter from a medical accelerator. Phys Med Biol. 2010 Apr 21; 55(8):2155-66.Phys Med Biol2010-03-19T00:00:002010Out-of-field photon dose following removal of the flattening filter from a medical accelerator.16696457Vassiliev ON, Titt U, Kry SF, P?nisch F, Gillin MT, Mohan RMedical physicsMonte Carlo study of photon fields from a flattening filter-free clinical accelerator. Med Phys. 2006 Apr; 33(4):820-7.Med Phys2006-04-01T00:00:002006Monte Carlo study of photon fields from a flattening filter-free clinical accelerator.17011466Jang SY, Liu HH, Wang X, Vassiliev ON, Siebers JV, Dong L, Mohan RInternational journal of radiation oncology, biology, physicsDosimetric verification for intensity-modulated radiotherapy of thoracic cancers using experimental and Monte Carlo approaches. Int J Radiat Oncol Biol Phys. 2006 Nov 01; 66(3):939-48.Int J Radiat Oncol Biol Phys2006-11-01T00:00:002006Dosimetric verification for intensity-modulated radiotherapy of thoracic cancers using experimental and Monte Carlo approaches.17153419Kry SF, Titt U, P?nisch F, Followill D, Vassiliev ON, White RA, Mohan R, Salehpour MMedical physicsA Monte Carlo model for calculating out-of-field dose from a varian 6 MV beam. Med Phys. 2006 Nov; 33(11):4405-13.Med Phys2006-11-01T00:00:002006A Monte Carlo model for calculating out-of-field dose from a varian 6 MV beam.17219152Cho SH, Vassiliev ON, Horton JLRadiation and environmental biophysicsComparison between an event-by-event Monte Carlo code, NOREC, and ETRAN for electron scaled point kernels between 20 keV and 1 MeV. Radiat Environ Biophys. 2007 Mar; 46(1):77-83.Radiat Environ Biophys2007-01-12T00:00:002007Comparison between an event-by-event Monte Carlo code, NOREC, and ETRAN for electron scaled point kernels between 20 keV and 1 MeV.17637397Kry SF, Titt U, P?nisch F, Vassiliev ON, Salehpour M, Gillin M, Mohan RInternational journal of radiation oncology, biology, physicsReduced neutron production through use of a flattening-filter-free accelerator. Int J Radiat Oncol Biol Phys. 2007 Jul 15; 68(4):1260-4.Int J Radiat Oncol Biol Phys2007-07-15T00:00:002007Reduced neutron production through use of a flattening-filter-free accelerator.19190359Kry SF, Howell RM, Polf J, Mohan R, Vassiliev ONPhysics in medicine and biologyTreatment vault shielding for a flattening filter-free medical linear accelerator. Phys Med Biol. 2009 Mar 07; 54(5):1265-73.Phys Med Biol2009-02-03T00:00:002009Treatment vault shielding for a flattening filter-free medical linear accelerator.19223837Vassiliev ON, Kry SF, Chang JY, Balter PA, Titt U, Mohan RJournal of applied clinical medical physicsStereotactic radiotherapy for lung cancer using a flattening filter free Clinac. J Appl Clin Med Phys. 2009 Jan 27; 10(1):14-21.J Appl Clin Med Phys2009-01-27T00:00:002009Stereotactic radiotherapy for lung cancer using a flattening filter free Clinac.17544596Vassiliev ON, Kry SF, Kuban DA, Salehpour M, Mohan R, Titt UInternational journal of radiation oncology, biology, physicsTreatment-planning study of prostate cancer intensity-modulated radiotherapy with a Varian Clinac operated without a flattening filter. Int J Radiat Oncol Biol Phys. 2007 Aug 01; 68(5):1567-71.Int J Radiat Oncol Biol Phys2007-06-04T00:00:002007Treatment-planning study of prostate cancer intensity-modulated radiotherapy with a Varian Clinac operated without a flattening filter.18185001Titt U, Zheng Y, Vassiliev ON, Newhauser WDPhysics in medicine and biologyMonte Carlo investigation of collimator scatter of proton-therapy beams produced using the passive scattering method. Phys Med Biol. 2008 Jan 21; 53(2):487-504.Phys Med Biol2007-12-28T00:00:002007Monte Carlo investigation of collimator scatter of proton-therapy beams produced using the passive scattering method.20057008Vassiliev ON, Wareing TA, McGhee J, Failla G, Salehpour MR, Mourtada FPhysics in medicine and biologyValidation of a new grid-based Boltzmann equation solver for dose calculation in radiotherapy with photon beams. Phys Med Biol. 2010 Feb 07; 55(3):581-98.Phys Med Biol2010-01-07T00:00:002010Validation of a new grid-based Boltzmann equation solver for dose calculation in radiotherapy with photon beams.16552113Vassiliev ON, Titt U, P?nisch F, Kry SF, Mohan R, Gillin MTPhysics in medicine and biologyDosimetric properties of photon beams from a flattening filter free clinical accelerator. Phys Med Biol. 2006 Apr 07; 51(7):1907-17.Phys Med Biol2006-03-21T00:00:002006Dosimetric properties of photon beams from a flattening filter free clinical accelerator.18561666Kry SF, Howell RM, Titt U, Salehpour M, Mohan R, Vassiliev ONMedical physicsEnergy spectra, sources, and shielding considerations for neutrons generated by a flattening filter-free Clinac. Med Phys. 2008 May; 35(5):1906-11.Med Phys2008-05-01T00:00:002008Energy spectra, sources, and shielding considerations for neutrons generated by a flattening filter-free Clinac.74Professor10Assistant Professor14Associate Professor1400 Pressler StHouston77030-4008TX3.545590.00835803103research areas6.40560.016474626coauthor of126.8296.7756960similar to1155selected publicationsAuthorship 3728136Authorship 3731744Authorship 3731752Authorship 3731763Authorship 3732351Authorship 3732362Authorship 3732375Authorship 3732381Authorship 3732394Authorship 3732402Authorship 3733841Authorship 3733855Authorship 3733863Authorship 3733871Authorship 3733884Authorship 3733892Authorship 3733962Authorship 3733971Authorship 3733982Authorship 3733991Authorship 3734001Authorship 3734011Authorship 3734021Authorship 3734883Authorship 3734894Authorship 3734902Authorship 841968Authorship 843250Authorship 843354Authorship 847295Authorship 850117Authorship 854459Authorship 855755Authorship 856390Authorship 856696Authorship 857327Authorship 863089Authorship 863325Authorship 865284CancersReducing the cost of proton radiation therapy. Cancers. 7:688-705.Reducing the cost of proton radiation therapyJournal of Magnetism and Magnetic MaterialsQuantum Monte-Carlo study of phase transitions in Heisenberg chains with long-range interactions. Journal of Magnetism and Magnetic Materials. 226-230:588-589.Quantum Monte-Carlo study of phase transitions in Heisenberg chains with long-range interactionsSoviet Atomic EnergyUsing symmetry properties to modify estimates in calculations of radiation fields by the Monte Carlo method. Soviet Atomic Energy. 60:347-350.Using symmetry properties to modify estimates in calculations of radiation fields by the Monte Carlo methodJournal of Chemical PhysicsMonte Carlo phase diagram for diblock copolymer melts. Journal of Chemical Physics. 124.Monte Carlo phase diagram for diblock copolymer meltsSoviet Physics JournalCalculation of microdosimetric characteristics in electron and gamma-ray irradiated water. Soviet Physics Journal. 31:149-153.Calculation of microdosimetric characteristics in electron and gamma-ray irradiated waterSoviet Physics JournalFluctuations of the energy absorption of electron-photon radiation in a model with collision-grouping elements. Soviet Physics Journal. 30:800-804.Fluctuations of the energy absorption of electron-photon radiation in a model with collision-grouping elementsJournal of Chemical PhysicsFluctuation effects in block copolymer melts. Journal of Chemical Physics. 118:7700-7713.Fluctuation effects in block copolymer meltsSoviet Atomic EnergyEffects of radiation spectra on radiation-effect yields, relative biological effectiveness, and quality coefficients. Soviet Atomic Energy. 70:48-55.Effects of radiation spectra on radiation-effect yields, relative biological effectiveness, and quality coefficientsJournal of Applied PhysicsQuantum Monte Carlo study of a Heisenberg spin system in two dimensions with long-range interactions. Journal of Applied Physics. 89:7329-7331.Quantum Monte Carlo study of a Heisenberg spin system in two dimensions with long-range interactionsPhysica A: Statistical Mechanics and its ApplicationsQuantum Monte-Carlo study of the Heisenberg chain with long-range ferromagnetic interactions. Physica A: Statistical Mechanics and its Applications. 294:139-154.Quantum Monte-Carlo study of the Heisenberg chain with long-range ferromagnetic interactionsPhysica A: Statistical Mechanics and its ApplicationsA model of the radiation-induced bystander effect based on an analogy with ferromagnets. Application to modelling tissue response in a uniform field. Physica A: Statistical Mechanics and its Applications. 416:242-251.A model of the radiation-induced bystander effect based on an analogy with ferromagnets. Application to modelling tissue response in a uniform fieldRadiation Protection DosimetryThe influence of short tracks on the biological effectiveness of radiations. Radiation Protection Dosimetry. 62:179-182.The influence of short tracks on the biological effectiveness of radiationsSurface Review and LettersOptically nonlinear s-polarized electromagnetic waves in multilayered symmetric dielectrics. Surface Review and Letters. 7:89-102.Optically nonlinear s-polarized electromagnetic waves in multilayered symmetric dielectrics21306959Vassiliev ON, Kudchadker RJ, Swanson DA, Bruno TL, van Vulpen M, Frank SJBrachytherapyDisplacement of periurethral stranded seeds and its dosimetric consequences in prostate brachytherapy. Brachytherapy. 2011 Sep-Oct; 10(5):401-8.Brachytherapy2011-02-09T00:00:002011Displacement of periurethral stranded seeds and its dosimetric consequences in prostate brachytherapy.21875820Vassiliev ON, Kudchadker RJ, Kuban DA, Frank SJ, Choi S, Nguyen Q, Lee AKPhysica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)Dosimetric impact of fiducial markers in patients undergoing photon beam radiation therapy. Phys Med. 2012 Jul; 28(3):240-4.Phys Med2011-08-27T00:00:002011Dosimetric impact of fiducial markers in patients undergoing photon beam radiation therapy.D011829Concepts & Ideas36110120.695982Radiation DosageD009010Concepts & Ideas1776710.769888Monte Carlo MethodD010315Objects793520.79739Particle AcceleratorsD004583Concepts & Ideas791680.884224ElectronsAuthorship 9012581Authorship 9013551Authorship 9034952Authorship 9061468Authorship 9180242Authorship 9203381Authorship 9235661Authorship 936384122245202Vassiliev ONInternational journal of radiation oncology, biology, physicsFormulation of the multi-hit model with a non-Poisson distribution of hits. Int J Radiat Oncol Biol Phys. 2012 Jul 15; 83(4):1311-6.Int J Radiat Oncol Biol Phys2012-01-13T00:00:002012Formulation of the multi-hit model with a non-Poisson distribution of hits.22297165Vassiliev ONPhysics in medicine and biologyElectron slowing-down spectra in water for electron and photon sources calculated with the Geant4-DNA code. Phys Med Biol. 2012 Feb 21; 57(4):1087-94.Phys Med Biol2012-02-01T00:00:002012Electron slowing-down spectra in water for electron and photon sources calculated with the Geant4-DNA code.24925886Wang H, Vassiliev ONPhysics in medicine and biologyRadial dose distributions from protons of therapeutic energies calculated with Geant4-DNA. Phys Med Biol. 2014 Jul 21; 59(14):3657-68.Phys Med Biol2014-06-13T00:00:002014Radial dose distributions from protons of therapeutic energies calculated with Geant4-DNA.25920039Newhauser WD, Zhang R, Jones TG, Giebeler A, Taddei PJ, Stewart RD, Lee A, Vassiliev OCancersReducing the cost of proton radiation therapy: the feasibility of a streamlined treatment technique for prostate cancer. Cancers (Basel). 2015 Apr 24; 7(2):688-705.Cancers (Basel)2015-04-24T00:00:002015Reducing the cost of proton radiation therapy: the feasibility of a streamlined treatment technique for prostate cancer.28362271Wang H, Vassiliev ONPhysics in medicine and biologyRadial dose distributions from carbon ions of therapeutic energies calculated with Geant4-DNA. Phys Med Biol. 2017 05 21; 62(10):N219-N227.Phys Med Biol2017-03-31T00:00:002017Radial dose distributions from carbon ions of therapeutic energies calculated with Geant4-DNA.28832343Vassiliev ON, Grosshans DR, Mohan RPhysics in medicine and biologyA new formalism for modelling parameters a and ? of the linear-quadratic model of cell survival for hadron therapy. Phys Med Biol. 2017 Oct 03; 62(20):8041-8059.Phys Med Biol2017-10-03T00:00:002017A new formalism for modelling parameters a and ? of the linear-quadratic model of cell survival for hadron therapy.29411712Vassiliev ON, Kry SF, Grosshans DR, Mohan RPhysics in medicine and biologyAverage stopping powers for electron and photon sources for radiobiological modeling and microdosimetric applications. Phys Med Biol. 2018 03 02; 63(5):055007.Phys Med Biol2018-03-02T00:00:002018Average stopping powers for electron and photon sources for radiobiological modeling and microdosimetric applications.30189421Vassiliev ON, Kry SF, Wang HC, Peterson CB, Chang JY, Mohan RPhysics in medicine and biologyRadiotherapy of lung cancers: FFF beams improve dose coverage at tumor periphery compromised by electronic disequilibrium. Phys Med Biol. 2018 09 28; 63(19):195007.Phys Med Biol2018-09-28T00:00:002018Radiotherapy of lung cancers: FFF beams improve dose coverage at tumor periphery compromised by electronic disequilibrium.D017785Objects1325080.750337Photons24018829Wang X, Yang JN, Li X, Tailor R, Vassilliev O, Brown P, Rhines L, Chang EPhysics in medicine and biologyEffect of spine hardware on small spinal stereotactic radiosurgery dosimetry. Phys Med Biol. 2013 Oct 07; 58(19):6733-47.Phys Med Biol2013-09-09T00:00:002013Effect of spine hardware on small spinal stereotactic radiosurgery dosimetry.Authorship 956019131553958Vassiliev ON, Peterson CB, Cao W, Grosshans DR, Mohan RPhysics in medicine and biologySystematic microdosimetric data for protons of therapeutic energies calculated with Geant4-DNA. Phys Med Biol. 2019 11 04; 64(21):215018.Phys Med Biol2019-11-04T00:00:002019Systematic microdosimetric data for protons of therapeutic energies calculated with Geant4-DNA.Authorship 974968731883390Kry SF, Feygelman V, Balter P, Kn??s T, Charlie Ma CM, Snyder M, Tonner B, Vassiliev ONMedical physicsAAPM Task Group 329: Reference dose specification for dose calculations: Dose-to-water or dose-to-muscle? Med Phys. 2020 Mar; 47(3):e52-e64.Med Phys2020-01-28T00:00:002020AAPM Task Group 329: Reference dose specification for dose calculations: Dose-to-water or dose-to-muscle?Authorship 990380132464080Vassiliev ON, Peterson CB, Grosshans DR, Mohan RThe British journal of radiologyA simple model for calculating relative biological effectiveness of X-rays and gamma radiation in cell survival. Br J Radiol. 2020 Aug; 93(1112):20190949.Br J Radiol2020-06-04T00:00:002020A simple model for calculating relative biological effectiveness of X-rays and gamma radiation in cell survival.Authorship 1013544133692907Vassiliev ONBiomedical physics & engineering expressOn calculation of the average linear energy transfer for radiobiological modelling. Biomed Phys Eng Express. 2021 01; 7(1).Biomed Phys Eng Express2020-11-20T00:00:002020On calculation of the average linear energy transfer for radiobiological modelling.Authorship 1023906234168519Chetvertkov MA, Vassiliev ON, Yang J, Wang HC, Liu AY, Liao Z, Mohan RJournal of radiotherapy in practiceImpact of Intra-Fractional Motion on Dose Distributions in Lung IMRT. J Radiother Pract. 2021 Mar; 20(1):12-16.J Radiother Pract2020-01-09T00:00:002020Impact of Intra-Fractional Motion on Dose Distributions in Lung IMRT.Authorship 1038814135330584Vassiliev ON, Peterson CB, Chang JY, Mohan RJournal of radiotherapy in practiceUsing FFF Beams to Improve the Therapeutic Ratio of Lung SBRT. J Radiother Pract. 2021 Dec; 20(4):419-425.J Radiother Pract2020-07-30T00:00:002020Using FFF Beams to Improve the Therapeutic Ratio of Lung SBRT.Authorship 1043656135401050Vassiliev ON, Peterson CB, Chang JY, Mohan RJournal of radiotherapy in practiceMonte Carlo evaluation of target dose coverage in lung stereotactic body radiation therapy with flattening filter-free beams. J Radiother Pract. 2022 Mar; 21(1):81-87.J Radiother Pract2020-10-16T00:00:002020Monte Carlo evaluation of target dose coverage in lung stereotactic body radiation therapy with flattening filter-free beams.Authorship 1062615136533628Vassiliev ONPhysics in medicine and biologyAccumulation of sublethal radiation damage and its effect on cell survival. Phys Med Biol. 2022 12 19; 68(1).Phys Med Biol2022-12-19T00:00:002022Accumulation of sublethal radiation damage and its effect on cell survival.true1Associate ProfessorAssociate Professortrue1Associate ProfessorAssociate Professortrue1ProfessorProfessortrue1Assistant ProfessorAssistant Professortrue1Associate ProfessorAssociate Professortrue1ProfessorProfessortrue1ProfessorProfessortrue1Associate ProfessorAssociate Professortrue1Associate ProfessorAssociate Professor