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
2010
A systematic evaluation of the dose-rate constant determined by photon spectrometry for 21 different models of low-energy photon-emitting brachytherapy sources
Chen Z, Nath R. A systematic evaluation of the dose-rate constant determined by photon spectrometry for 21 different models of low-energy photon-emitting brachytherapy sources. Physics In Medicine And Biology 2010, 55: 6089-6104. PMID: 20871136, PMCID: PMC3265933, DOI: 10.1088/0031-9155/55/20/004.Peer-Reviewed Original ResearchImpact of source‐production revision on the dose‐rate constant of interstitial brachytherapy sources
Chen Z, Bongiorni P, Nath R. Impact of source‐production revision on the dose‐rate constant of interstitial brachytherapy sources. Medical Physics 2010, 37: 3607-3610. PMID: 20831068, PMCID: PMC2902542, DOI: 10.1118/1.3453766.Peer-Reviewed Original ResearchA photon spectrometric dose‐rate constant determination for the Advantage™ Pd‐103 brachytherapy source
Chen ZJ, Bongiorni P, Nath R. A photon spectrometric dose‐rate constant determination for the Advantage™ Pd‐103 brachytherapy source. Medical Physics 2010, 37: 672-674. PMID: 20229876, PMCID: PMC2821420, DOI: 10.1118/1.3298011.Peer-Reviewed Original Research
2009
Time dependence of energy spectra of brachytherapy sources and its impact on the half and the tenth value layers
Yue NJ, Chen Z, Hearn RA, Rodgers JJ, Nath R. Time dependence of energy spectra of brachytherapy sources and its impact on the half and the tenth value layers. Medical Physics 2009, 36: 5175-5182. PMID: 19994527, DOI: 10.1118/1.3246843.Peer-Reviewed Original Research
2008
Ice as a water-equivalent solid medium for brachytherapy dosimetric measurements
Song H, Chen Z, Yue N, Wu Q, Yin FF. Ice as a water-equivalent solid medium for brachytherapy dosimetric measurements. Radiation And Environmental Biophysics 2008, 48: 145-151. PMID: 19066926, DOI: 10.1007/s00411-008-0205-9.Peer-Reviewed Original ResearchConceptsSolid phantomWater conversion factorNon-negligible uncertaintiesMono-energetic photonsPrecise positioningLow-energy photon-emitting brachytherapy sourcesChemical compositionBrachytherapy sourcesPositioning advantageDosimetric measurementsExperimental determinationNecessary precisionDosimetric characteristicsPhantomIceBrachytherapy dosimetryPositioningConversion factorPhotonsUncertaintyKeVPhoton energy spectrum emitted by a novel polymer‐encapsulated source and its effect on the dose rate constant
Khan S, Chen ZJ, Nath R. Photon energy spectrum emitted by a novel polymer‐encapsulated source and its effect on the dose rate constant. Medical Physics 2008, 35: 1403-1406. PMID: 18491535, PMCID: PMC2673625, DOI: 10.1118/1.2870231.Peer-Reviewed Original Research
2007
Silver fluorescent x‐ray yield and its influence on the dose rate constant for nine low‐energy brachytherapy source models
Nath R, Chen ZJ. Silver fluorescent x‐ray yield and its influence on the dose rate constant for nine low‐energy brachytherapy source models. Medical Physics 2007, 34: 3785-3793. PMID: 17985624, DOI: 10.1118/1.2775665.Peer-Reviewed Original ResearchPhoton spectrometry for the determination of the dose‐rate constant of low‐energy photon‐emitting brachytherapy sources
Chen ZJ, Nath R. Photon spectrometry for the determination of the dose‐rate constant of low‐energy photon‐emitting brachytherapy sources. Medical Physics 2007, 34: 1412-1430. PMID: 17500473, DOI: 10.1118/1.2713217.Peer-Reviewed Original ResearchConceptsPhoton spectrometry techniquePhoton spectrometryHigh-resolution gamma-ray spectrometerDosimetry techniquesLow-energy photonsPhoton energy spectrumMono-energetic photonsGamma-ray spectrometerLow-energy photon-emitting brachytherapy sourcesBrachytherapy sourcesLow-energy sourcesAbsolute dosimeterPhoton characteristicsEnergy dependenceDetector sensitivityDetector sizeSolid phantomDose rate measurementsPhotonsDosimetric propertiesRadiation dosimetryDose rate constantDose rateSpectrometry techniquesAccurate measurement
2006
Evaluation of the EDR-2 film for relative dosimetry of high-energy photon and electron beams
Ahmad M, Chen Z, Song H, Deng J, Nath R. Evaluation of the EDR-2 film for relative dosimetry of high-energy photon and electron beams. Radiation Protection Dosimetry 2006, 120: 159-162. PMID: 16644932, DOI: 10.1093/rpd/ncj006.Peer-Reviewed Original ResearchConceptsEDR-2 filmsElectron beamRelative dosimetryHigh-energy photonsClinical radiation dosimetryDose profilesPhotonsRadiation dosimetryBeamDose distributionRadiographic filmsSensitometric studyFilmsDosimetryTreatment planning techniquesElectronsDiodesSymmetryKVFlatnessPlanning techniquesDistribution
2005
Dose rate constant of a Cesium‐131 interstitial brachytherapy seed measured by thermoluminescent dosimetry and gamma‐ray spectrometry
Chen Z, Bongiorni P, Nath R. Dose rate constant of a Cesium‐131 interstitial brachytherapy seed measured by thermoluminescent dosimetry and gamma‐ray spectrometry. Medical Physics 2005, 32: 3279-3285. PMID: 16372409, DOI: 10.1118/1.2098127.Peer-Reviewed Original ResearchRelative Biological Effectiveness of 103Pd and 125I Photons for Continuous Low-Dose-Rate Irradiation of Chinese Hamster Cells
Nath R, Bongiorni P, Chen Z, Gragnano J, Rockwell S. Relative Biological Effectiveness of 103Pd and 125I Photons for Continuous Low-Dose-Rate Irradiation of Chinese Hamster Cells. Radiation Research 2005, 163: 501-509. PMID: 15850411, DOI: 10.1667/rr3363.Peer-Reviewed Original ResearchConceptsContinuous low doseRate irradiationDose-rate effectInverse dose-rate effectCGy/hInitial dose rateChinese hamster lung cellsHigher initial dose rateLow doseHamster lung cellsLung cellsDose rateCell survivalX-ray beamRelative biological effectivenessChinese hamster cellsCellsImplantsAverage RBEHamster cellsBiological responsesBiological effectivenessMonoenergetic X-ray beam
2002
Independent monitor unit calculation for intensity modulated radiotherapy using the MIMiC multileaf collimator
Chen Z, Xing L, Nath R. Independent monitor unit calculation for intensity modulated radiotherapy using the MIMiC multileaf collimator. Medical Physics 2002, 29: 2041-2051. PMID: 12349925, DOI: 10.1118/1.1500397.Peer-Reviewed Original Research
2001
Dose rate constant and energy spectrum of interstitial brachytherapy sources
Chen Z, Nath R. Dose rate constant and energy spectrum of interstitial brachytherapy sources. Medical Physics 2001, 28: 86-96. PMID: 11213926, DOI: 10.1118/1.1333748.Peer-Reviewed Original Research