2020
A general-purpose Monte Carlo particle transport code based on inverse transform sampling for radiotherapy dose calculation
Liang Y, Muhammad W, Hart GR, Nartowt BJ, Chen ZJ, Yu JB, Roberts KB, Duncan JS, Deng J. A general-purpose Monte Carlo particle transport code based on inverse transform sampling for radiotherapy dose calculation. Scientific Reports 2020, 10: 9808. PMID: 32555530, PMCID: PMC7300009, DOI: 10.1038/s41598-020-66844-7.Peer-Reviewed Original ResearchConceptsPhoton transportBoundary crossing algorithmMonte Carlo particle transport codeMonte Carlo methodTransport simulationsAcceptance-rejection samplingRadiotherapy dose calculationsPhoto-electric effectParticle transport codeEGSnrc simulationsCarlo methodBremsstrahlung eventsInelastic scatteringPair productionRayleigh scatteringThread divergenceMC simulationsTransport codeMC codeHistory schemeParticle transportCrossing algorithmInverseElectron transportSimulation accuracy
2019
Results of a pilot/phase II study of gamma knife radiosurgery for brain metastases and implications for future prospective clinical trials
Yu J, Singh C, Bindra R, Contessa J, Husain Z, Hansen J, Park H, Roberts K, Bond J, Tien C, Guo F, Colaco R, Housri N, Magnuson W, Mahajan A, Omay S, Chiang V. Results of a pilot/phase II study of gamma knife radiosurgery for brain metastases and implications for future prospective clinical trials. Journal Of Radiation Oncology 2019, 8: 39-46. DOI: 10.1007/s13566-018-0370-7.Peer-Reviewed Original ResearchYale-New Haven HospitalPhase II studyBrain metastasesClinical trialsII studyKnife radiosurgeryLocal controlPre-defined primary endpointWhole-brain radiation treatmentFuture prospective clinical trialsEvaluable brain metastasesSymptomatic radiation necrosisMedian patient ageLocal control ratePhase 2 studyGood local controlProspective clinical trialsNumber of metastasesLarge clinical trialsProportional hazards regressionFuture clinical trialsGamma knife radiosurgeryImportant clinical variablesStandard clinical practiceNew Haven Hospital
2018
A Pilot/Phase II Study of Stereotactic Radiosurgery for Brain Metastases Using Rational Dose Selection
Yu J, Singh C, Bindra R, Contessa J, Husain Z, Hansen J, Park H, Roberts K, Bond J, Tien C, Guo F, Colaco R, Housri N, Magnuson W, Omay B, Chiang V. A Pilot/Phase II Study of Stereotactic Radiosurgery for Brain Metastases Using Rational Dose Selection. International Journal Of Radiation Oncology • Biology • Physics 2018, 102: e372-e373. DOI: 10.1016/j.ijrobp.2018.07.1113.Peer-Reviewed Original Research
2016
A Novel Prognostic Index for Ocular Adnexal Lymphoma
Meeks M, Park H, Yu J, Roberts K, Foss F, Wilson L. A Novel Prognostic Index for Ocular Adnexal Lymphoma. Blood 2016, 128: 3597. DOI: 10.1182/blood.v128.22.3597.3597.Peer-Reviewed Original ResearchOcular adnexal lymphomaNovel prognostic indexOverall survivalIndolent histologiesPrognostic indexRelative survivalAdnexal lymphomaGroup IIGroup IGroup I. Group IEnd Results (SEER) databaseSuperior overall survivalCohort of patientsProportional hazards analysisKaplan-Meier estimatesLacrimal gland tumorsHeterogeneous patient populationLarge national databaseAggressive histologyDistant diseaseConjunctival tumorsHazard ratioPrognostic factorsRare malignancyIndependent predictorsRadiation Oncology Drug Prescription Patterns in Medicare Part D
Maroongroge S, Roberts K, Yu J. Radiation Oncology Drug Prescription Patterns in Medicare Part D. International Journal Of Radiation Oncology • Biology • Physics 2016, 96: e395-e396. DOI: 10.1016/j.ijrobp.2016.06.1625.Peer-Reviewed Original ResearchA Comparison of Pharmacologic Pain and Psychiatric Management by Radiation Oncologists and Medical Oncologists in Medicare Part D
Maroongroge S, Roberts K, Yu J. A Comparison of Pharmacologic Pain and Psychiatric Management by Radiation Oncologists and Medical Oncologists in Medicare Part D. International Journal Of Radiation Oncology • Biology • Physics 2016, 96: e511-e512. DOI: 10.1016/j.ijrobp.2016.06.1911.Peer-Reviewed Original Research
2015
Pediatric Brainstem Glioma Survival After Definitive Radiation Therapy With or Without Concurrent Chemotherapy: A Nationwide Comparison
Park H, Yeboa D, Lester-Coll N, Corso C, Mancini B, Bindra R, Roberts K, Yu J, Rutter C. Pediatric Brainstem Glioma Survival After Definitive Radiation Therapy With or Without Concurrent Chemotherapy: A Nationwide Comparison. International Journal Of Radiation Oncology • Biology • Physics 2015, 93: e504-e505. DOI: 10.1016/j.ijrobp.2015.07.1836.Peer-Reviewed Original ResearchHistorical trends of radiotherapy use in prevalent malignancies over 38 years in SEER
Yeboa D, Aneja S, Montana G, Roberts K, Yu J. Historical trends of radiotherapy use in prevalent malignancies over 38 years in SEER. Journal Of Radiation Oncology 2015, 4: 11-17. DOI: 10.1007/s13566-015-0182-y.Peer-Reviewed Original ResearchIntensity-modulated radiation therapyProstate cancerRadiation therapyEnd Results (SEER) databaseAmerican Joint CommitteeBreast cancer treatmentUse of RTInitial therapyMethodsThe SurveillanceRT receiptNonmetastatic patientsResults databaseCommon malignancyTherapy utilizationColorectal cancerLung cancerPrevalent malignancyCancer sitesRadiotherapy useHigh incidenceMedical treatmentJoint CommitteeDisease sitesPersistent decreaseTherapy
2014
Historical Trends of Radiation Therapy Use in Prevalent Malignancies
Yeboa D, Roberts K, Aneja S, Yu J. Historical Trends of Radiation Therapy Use in Prevalent Malignancies. International Journal Of Radiation Oncology • Biology • Physics 2014, 90: s599-s600. DOI: 10.1016/j.ijrobp.2014.05.1796.Peer-Reviewed Original Research
2012
A 35-year History of Radiation Therapy Utilization Across the United States
Aneja S, Roberts K, Wilson L, Haffty B, Montana G, Yu J. A 35-year History of Radiation Therapy Utilization Across the United States. International Journal Of Radiation Oncology • Biology • Physics 2012, 84: s546-s547. DOI: 10.1016/j.ijrobp.2012.07.1457.Peer-Reviewed Original ResearchProton Radiation Therapy for Prostate Cancer in the Medicare Population: Patterns of Care and Comparison of Early Toxicity With Intensity Modulated Radiation Therapy
Yu J, Soulos P, Herrin J, Cramer L, Potosky A, Roberts K, Gross C. Proton Radiation Therapy for Prostate Cancer in the Medicare Population: Patterns of Care and Comparison of Early Toxicity With Intensity Modulated Radiation Therapy. International Journal Of Radiation Oncology • Biology • Physics 2012, 84: s13. DOI: 10.1016/j.ijrobp.2012.07.040.Peer-Reviewed Original ResearchSkull Base Chordoma and Chondrosarcoma: An Update of National Radiation Therapy Patterns and Survival Outcomes in the Modern Era
Park H, Roberts K, Yu J. Skull Base Chordoma and Chondrosarcoma: An Update of National Radiation Therapy Patterns and Survival Outcomes in the Modern Era. International Journal Of Radiation Oncology • Biology • Physics 2012, 84: s286-s287. DOI: 10.1016/j.ijrobp.2012.07.748.Peer-Reviewed Original ResearchUnderstanding Costs and Value of Newer Radiation Modalities Among Older Women With Breast Cancer
Sen S, Soulos P, Frick K, Long J, Roberts K, Yu J, Evans S, Chagpar A, Gross C. Understanding Costs and Value of Newer Radiation Modalities Among Older Women With Breast Cancer. International Journal Of Radiation Oncology • Biology • Physics 2012, 84: s35. DOI: 10.1016/j.ijrobp.2012.07.096.Peer-Reviewed Original ResearchTemporal Trends in Radiation Modalities Among Older Women With Favorable Risk Breast Cancer
Roberts K, Soulos P, Yu J, Evans S, Long J, Gross C. Temporal Trends in Radiation Modalities Among Older Women With Favorable Risk Breast Cancer. International Journal Of Radiation Oncology • Biology • Physics 2012, 84: s34. DOI: 10.1016/j.ijrobp.2012.07.093.Peer-Reviewed Original ResearchShort-term complications and use of breast brachytherapy in the national Medicare population in 2008-2009.
Presley C, Soulos P, Herrin J, Roberts K, Yu J, Killelea B, Lesnikoski B, Long J, Gross C. Short-term complications and use of breast brachytherapy in the national Medicare population in 2008-2009. Journal Of Clinical Oncology 2012, 30: 1030-1030. DOI: 10.1200/jco.2012.30.15_suppl.1030.Peer-Reviewed Original ResearchWhole breast irradiationHospital referral regionsBone complicationsClinical characteristicsSkin complicationsReferral regionsEarly-stage breast cancerNational treatment patternsOne-year overallReceipt of chemotherapyNumber of comorbiditiesShort-term complicationsDeep tissuesNational Medicare populationAdjuvant radiationComplication rateTreatment patternsDiagnosis codesBreast cancerMedicare claimsMedicare populationComplicationsMedicare beneficiariesTreatment groupsClinical practiceProton radiotherapy for prostate cancer in the Medicare population: Patterns of care and comparison of early toxicity with IMRT.
Yu J, Soulos P, Cramer L, Roberts K, Herrin J, Potosky A, Gross C. Proton radiotherapy for prostate cancer in the Medicare population: Patterns of care and comparison of early toxicity with IMRT. Journal Of Clinical Oncology 2012, 30: 4651-4651. DOI: 10.1200/jco.2012.30.15_suppl.4651.Peer-Reviewed Original ResearchProstate cancer patientsSix monthsShort-term toxicityOne-yearCancer patientsPRT patientsProstate cancerProton radiotherapyLogistic regressionTreatment-related complicationsOne-year outcomesCumulative complication rateMultivariable logistic regressionPatient-reported outcomesPatterns of careConditional logistic regressionHigher socioeconomic statusGU complicationsGU toxicityComplication rateEarly toxicityDiagnosis codesLong-term effectsRadiation therapyMedicare populationThe influence of physician densities and patient characteristics on the decision to treat prostate cancer patients with varying clinical benefit.
Yu J, Aneja S, Makarov D, Roberts K, Gross C. The influence of physician densities and patient characteristics on the decision to treat prostate cancer patients with varying clinical benefit. Journal Of Clinical Oncology 2012, 30: 19-19. DOI: 10.1200/jco.2012.30.5_suppl.19.Peer-Reviewed Original ResearchHealth system factorsHealth service areasCurative therapyUrologist densityClinical benefitProstate cancerRadiation oncologistsPhysician densitySystem factorsRadiation oncologist densityEnd Results (SEER) databaseLower likelihoodReceipt of treatmentMarital statusProstate cancer patientsHigher likelihoodLogistic regression modelsArea Resource FilePatient characteristicsPatient factorsInitial treatmentResults databasePatient populationCancer patientsProper therapyThe influence of regional radiation oncologist and urologist capacities on treatment choice for prostate cancer management.
Yu J, Aneja S, Makarov D, Roberts K, Gross C. The influence of regional radiation oncologist and urologist capacities on treatment choice for prostate cancer management. Journal Of Clinical Oncology 2012, 30: 108-108. DOI: 10.1200/jco.2012.30.5_suppl.108.Peer-Reviewed Original ResearchHealth service areasOnly surgical treatmentSurgical treatmentHealth system characteristicsProstate cancer managementTreatment choiceCancer managementRadiation oncologistsRadiation oncologist densityEnd Results (SEER) databaseSeparate logistic regression modelsHealth system dataLogistic regression modelsArea Resource FileUse of RTUrologist densityHospital densityPatient factorsResults databaseSurgical interventionUrology serviceTreatment modalitiesProstate cancerNCI's SurveillanceRadiation therapy
2011
The Influence of Regional Radiation Oncologist and Urologist Capacities on Treatment Choice for Prostate Cancer
Aneja S, Gross C, Makarov D, Roberts K, Yu J. The Influence of Regional Radiation Oncologist and Urologist Capacities on Treatment Choice for Prostate Cancer. International Journal Of Radiation Oncology • Biology • Physics 2011, 81: s552. DOI: 10.1016/j.ijrobp.2011.06.869.Peer-Reviewed Original Research
2008
Detection of Occult Brain Metastasis with High Resolution MRI using Double vs. Single Dose Gadolinium
Chamberlain D, Yu J, Roberts K, Higgins S, Mani S, Ozturk A, Chiang V, Knisely J. Detection of Occult Brain Metastasis with High Resolution MRI using Double vs. Single Dose Gadolinium. International Journal Of Radiation Oncology • Biology • Physics 2008, 72: s230-s231. DOI: 10.1016/j.ijrobp.2008.06.702.Peer-Reviewed Original Research
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