2022
Dosimetric study of Varian Universal Multi-Channel Cylinder System for High-Dose-Rate 192Ir Brachytherapy
Tien CJ, Damast S, Chen ZJ. Dosimetric study of Varian Universal Multi-Channel Cylinder System for High-Dose-Rate 192Ir Brachytherapy. Brachytherapy 2022, 21: 244-254. PMID: 34996715, DOI: 10.1016/j.brachy.2021.11.001.Peer-Reviewed Original Research
2020
A prototype open-ended multichannel intracavitary-interstitial hybrid applicator for gynecological high-dose-rate brachytherapy
Tien CJ, Chen Z. A prototype open-ended multichannel intracavitary-interstitial hybrid applicator for gynecological high-dose-rate brachytherapy. Radiological Physics And Technology 2020, 13: 187-194. PMID: 32424632, DOI: 10.1007/s12194-020-00567-2.Peer-Reviewed Original ResearchConceptsPrescription doseRate brachytherapyHybrid applicatorPrior patientsRisk doseMinimum doseOAR D2ccMultichannel applicatorCentral tandemDoseTarget coverageInterstitial needlesPatientsApplicator bodyBrachytherapyDistal endOpen distal endsPeripheral needlesPeripheral channelsSilico studiesNeedleBowelBladderD2ccRectum
2018
Extended duration of dilator use beyond 1 year may reduce vaginal stenosis after intravaginal high-dose-rate brachytherapy
Stahl JM, Qian JM, Tien CJ, Carlson DJ, Chen Z, Ratner ES, Park HS, Damast S. Extended duration of dilator use beyond 1 year may reduce vaginal stenosis after intravaginal high-dose-rate brachytherapy. Supportive Care In Cancer 2018, 27: 1425-1433. PMID: 30187220, DOI: 10.1007/s00520-018-4441-5.Peer-Reviewed Original ResearchConceptsVaginal stenosisEndometrial carcinomaMultivariable Cox proportional hazardsMultivariable Cox regression analysisVD useAcademic tertiary referral centerTertiary referral centerCox regression analysisLog-rank testCox proportional hazardsDevelopment of gradeDilator usePelvic radiotherapyReferral centerNoncompliant patientsPrimary outcomeAdjuvant brachytherapyEC patientsConclusionsThe riskRate brachytherapyProportional hazardsOptimal durationPatientsBrachytherapyStudy period
2017
Dose-Volume Predictors of Esophagitis After Thoracic Stereotactic Body Radiation Therapy
Harder EM, Chen Z, Park HS, Mancini BR, Decker RH. Dose-Volume Predictors of Esophagitis After Thoracic Stereotactic Body Radiation Therapy. American Journal Of Clinical Oncology 2017, 40: 477-482. PMID: 26017483, DOI: 10.1097/coc.0000000000000195.Peer-Reviewed Original ResearchConceptsStepwise selection techniqueRadiation therapyThoracic stereotactic body radiation therapyStereotactic hypofractionated radiation therapyStereotactic body radiation therapyDose-volume predictorsNormal tissue complication probabilityHypofractionated radiation therapyMultivariate logistic regressionProbability estimatesBody radiation therapyPlanning target volumeEsophageal toxicityEsophagitis ratesCTCAE v4.0Dosimetric predictorsPulmonary tumorsInstitutional databaseRadiotherapy parameters
2016
Pulmonary dose-volume predictors of radiation pneumonitis following stereotactic body radiation therapy
Harder EM, Park HS, Chen Z, Decker RH. Pulmonary dose-volume predictors of radiation pneumonitis following stereotactic body radiation therapy. Practical Radiation Oncology 2016, 6: e353-e359. PMID: 27156424, DOI: 10.1016/j.prro.2016.01.015.Peer-Reviewed Original ResearchConceptsMean lung doseStereotactic body radiation therapyRisk of gradeRadiation pneumonitisMultivariable logistic regressionBody radiation therapyDosimetric predictorsRadiation therapyMaximum doseLogistic regressionRP rateBest dosimetric predictorCardiac dosimetric parametersDose-volume predictorsPercent of lungVolume of lungGross tumor volumeBackward stepwise eliminationLung V10Lung doseMean doseTotal lungUnivariate analysisPulmonary volumesTumor volume
2015
Concomitant Imaging Dose and Cancer Risk in Image Guided Thoracic Radiation Therapy
Zhang Y, Wu H, Chen Z, Knisely JP, Nath R, Feng Z, Bao S, Deng J. Concomitant Imaging Dose and Cancer Risk in Image Guided Thoracic Radiation Therapy. International Journal Of Radiation Oncology • Biology • Physics 2015, 93: 523-531. PMID: 26460994, DOI: 10.1016/j.ijrobp.2015.06.034.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge FactorsAgedAged, 80 and overAorta, ThoracicBody SizeBreastChildChild, PreschoolCone-Beam Computed TomographyFemaleHeartHumansLungMaleMiddle AgedMonte Carlo MethodOrgans at RiskPhantoms, ImagingPhotonsPrecision MedicineProtonsRadiation DosageRadiography, ThoracicRadiotherapy, Image-GuidedRisk AssessmentSex FactorsSpinal CordThoracic WallThoraxConceptsConcomitant imaging doseThoracic radiation therapyCancer riskRadiation therapyMean dosesCardiac substructuresKilovoltage cone-beamImaging doseAdverse eventsPediatric patientsMedian dosesCancer patientsRight ventricleExtra radiation doseSpinal cordHigh dosesPatientsCone beamPlanning CT imagesChest dimensionsDosesPatient sizeImaging guidanceTherapyDose
2013
Acute toxicity and risk of infection during total skin electron beam therapy for mycosis fungoides
Lloyd S, Chen Z, Foss FM, Girardi M, Wilson LD. Acute toxicity and risk of infection during total skin electron beam therapy for mycosis fungoides. Journal Of The American Academy Of Dermatology 2013, 69: 537-543. PMID: 23849563, DOI: 10.1016/j.jaad.2013.04.063.Peer-Reviewed Original ResearchMeSH KeywordsAcute DiseaseAdultAge FactorsAgedAnalysis of VarianceCohort StudiesDermatomycosesDose Fractionation, RadiationDose-Response Relationship, RadiationElectronsFemaleHumansIncidenceMaleMiddle AgedMultivariate AnalysisMycosis FungoidesNeoplasm InvasivenessNeoplasm StagingPrognosisRadiodermatitisRadiotherapy DosageRetrospective StudiesRisk AssessmentSeverity of Illness IndexSex FactorsSkin Diseases, BacterialSkin NeoplasmsWhole-Body IrradiationConceptsTotal skin electron beam therapyMycosis fungoidesSkin infectionsElectron beam therapyAcute toxicityBeam therapyAcute treatment toxicityRetrospective study designIncidence of infectionRisk of infectionCommon toxicitiesTreatment toxicityCutaneous infectionsSkin painBaseline incidenceToxicity gradeGrade 3Modern seriesGrade 2Grade 1Consecutive coursesFungoidesInfectionStudy designGrade 4
2011
An integrated approach to segmentation and nonrigid registration for application in image-guided pelvic radiotherapy
Lu C, Chelikani S, Papademetris X, Knisely JP, Milosevic MF, Chen Z, Jaffray DA, Staib LH, Duncan JS. An integrated approach to segmentation and nonrigid registration for application in image-guided pelvic radiotherapy. Medical Image Analysis 2011, 15: 772-785. PMID: 21646038, PMCID: PMC3164526, DOI: 10.1016/j.media.2011.05.010.Peer-Reviewed Original ResearchAlgorithmsBayes TheoremFemaleHumansImaging, Three-DimensionalMaleProstatic NeoplasmsRadiographic Image EnhancementRadiographic Image Interpretation, Computer-AssistedRadiotherapy, Computer-AssistedReproducibility of ResultsSensitivity and SpecificitySubtraction TechniqueSystems IntegrationTomography, X-Ray ComputedUterine Cervical NeoplasmsKilovoltage Imaging Doses in the Radiotherapy of Pediatric Cancer Patients
Deng J, Chen Z, Roberts KB, Nath R. Kilovoltage Imaging Doses in the Radiotherapy of Pediatric Cancer Patients. International Journal Of Radiation Oncology • Biology • Physics 2011, 82: 1680-1688. PMID: 21477943, DOI: 10.1016/j.ijrobp.2011.01.062.Peer-Reviewed Original ResearchConceptsPediatric cancer patientsCancer patientsTesticular shieldingSpinal cordKilovoltage cone-beamCBCT dosesMean dosesClinical conditionsDose reductionLarge dosesFemoral headPatientsCBCT scansCone beamDosesFull-fan modeOptical nerveCBCT fieldCordDose increaseImaging dosesScanning protocolOARsRadiotherapyHalf-fan mode
1999
Combined use of transverse and scout computed tomography scans to localize radioactive seeds in an interstitial brachytherapy implant
Yue N, Chen Z, Bond J, Son Y, Nath R. Combined use of transverse and scout computed tomography scans to localize radioactive seeds in an interstitial brachytherapy implant. Medical Physics 1999, 26: 502-505. PMID: 10227350, DOI: 10.1118/1.598548.Peer-Reviewed Original Research