2022
A small footprint couch‐top support device for image‐guided radiotherapy of heavy patients
Chen H, Morley K, Rodriguez R, Draeger E, Hassan M, Chen Z. A small footprint couch‐top support device for image‐guided radiotherapy of heavy patients. Journal Of Applied Clinical Medical Physics 2022, 23: e13788. PMID: 36267043, PMCID: PMC9797158, DOI: 10.1002/acm2.13788.Peer-Reviewed Original Research
2020
Clinically-implementable template plans for multidwell treatments using Leipzig-style applicators in 192Ir surface brachytherapy
Draeger E, Pinkham DW, Chen ZJ, Tien CJ. Clinically-implementable template plans for multidwell treatments using Leipzig-style applicators in 192Ir surface brachytherapy. Brachytherapy 2020, 20: 401-409. PMID: 33288488, DOI: 10.1016/j.brachy.2020.09.019.Peer-Reviewed Original ResearchA 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 accuracyFeasibility of using multiple-dwell positions in 192Ir Leipzig-style brachytherapy surface applicators to expand target coverage and clinical application
Tien CJ, Pinkham DW, Chen ZJ. Feasibility of using multiple-dwell positions in 192Ir Leipzig-style brachytherapy surface applicators to expand target coverage and clinical application. Brachytherapy 2020, 19: 532-543. PMID: 32327342, DOI: 10.1016/j.brachy.2020.03.002.Peer-Reviewed Original Research
2019
Deployment and performance of model-based dose calculation algorithm in 192Ir shielded cylinder brachytherapy
Tien CJ, Chen ZJ. Deployment and performance of model-based dose calculation algorithm in 192Ir shielded cylinder brachytherapy. Brachytherapy 2019, 18: 883-889. PMID: 31444132, DOI: 10.1016/j.brachy.2019.07.006.Peer-Reviewed Original Research
2017
On the use of bolus for pacemaker dose measurement and reduction in radiation therapy
Yan H, Guo F, Zhu D, Stryker S, Trumpore S, Roberts K, Higgins S, Nath R, Chen Z, Liu W. On the use of bolus for pacemaker dose measurement and reduction in radiation therapy. Journal Of Applied Clinical Medical Physics 2017, 19: 125-131. PMID: 29152840, PMCID: PMC5768029, DOI: 10.1002/acm2.12229.Peer-Reviewed Original Research
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
2011
Testicular Doses in Image-Guided Radiotherapy of Prostate Cancer
Deng J, Chen Z, Yu JB, Roberts KB, Peschel RE, Nath R. Testicular Doses in Image-Guided Radiotherapy of Prostate Cancer. International Journal Of Radiation Oncology • Biology • Physics 2011, 82: e39-e47. PMID: 21489702, DOI: 10.1016/j.ijrobp.2011.01.071.Peer-Reviewed Original ResearchConceptsImage-guided radiotherapyTesticular dosesFull-fan modeProstate cancerFemoral headLess doseCBCT scansHalf-fan modeProstate cancer patientsKilovoltage cone-beamCancer patientsIntensity-modulated radiotherapy (IMRT) treatmentKilovoltage CBCTSuperior-inferior directionCone beamDosesCBCT fieldProstate patientsRectumDoseProstateMore doseRadiotherapy treatmentPatientsRadiotherapyKilovoltage 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
2009
2D‐3D registration for prostate radiation therapy based on a statistical model of transmission images
Munbodh R, Tagare HD, Chen Z, Jaffray DA, Moseley DJ, Knisely JP, Duncan JS. 2D‐3D registration for prostate radiation therapy based on a statistical model of transmission images. Medical Physics 2009, 36: 4555-4568. PMID: 19928087, DOI: 10.1118/1.3213531.Peer-Reviewed Original ResearchAlgorithmsData Interpretation, StatisticalHumansImage Interpretation, Computer-AssistedImaging, Three-DimensionalInformation Storage and RetrievalMalePattern Recognition, AutomatedPhantoms, ImagingProstatic NeoplasmsRadiographic Image EnhancementRadiotherapy, ConformalReproducibility of ResultsSensitivity and SpecificitySubtraction Technique
2008
Clinical implementation of enhanced dynamic wedges into the Pinnacle treatment planning system: Monte Carlo validation and patient-specific QA
Ahmad M, Deng J, Lund MW, Chen Z, Kimmett J, Moran MS, Nath R. Clinical implementation of enhanced dynamic wedges into the Pinnacle treatment planning system: Monte Carlo validation and patient-specific QA. Physics In Medicine And Biology 2008, 54: 447-465. PMID: 19098353, DOI: 10.1088/0031-9155/54/2/018.Peer-Reviewed Original ResearchIce 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 factorPhotonsUncertaintyKeV
2007
A frequency‐based approach to locate common structure for 2D‐3D intensity‐based registration of setup images in prostate radiotherapy
Munbodh R, Chen Z, Jaffray DA, Moseley DJ, Knisely JP, Duncan JS. A frequency‐based approach to locate common structure for 2D‐3D intensity‐based registration of setup images in prostate radiotherapy. Medical Physics 2007, 34: 3005-3017. PMID: 17822009, PMCID: PMC2796184, DOI: 10.1118/1.2745235.Peer-Reviewed Original Research
2006
A gradient feature weighted Minimax algorithm for registration of multiple portal images to 3DCT volumes in prostate radiotherapy
Chelikani S, Purushothaman K, Knisely J, Chen Z, Nath R, Bansal R, Duncan J. A gradient feature weighted Minimax algorithm for registration of multiple portal images to 3DCT volumes in prostate radiotherapy. International Journal Of Radiation Oncology • Biology • Physics 2006, 65: 535-547. PMID: 16690436, PMCID: PMC2791048, DOI: 10.1016/j.ijrobp.2005.12.032.Peer-Reviewed Original Research
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 Research
2003
Entropy-Based Dual-Portal-to-3-DCT Registration Incorporating Pixel Correlation
Bansal R, Staib LH, Chen Z, Rangarajan A, Knisely J, Nath R, Duncan JS. Entropy-Based Dual-Portal-to-3-DCT Registration Incorporating Pixel Correlation. IEEE Transactions On Medical Imaging 2003, 22: 29. PMID: 12703758, DOI: 10.1109/tmi.2002.806430.Peer-Reviewed Original ResearchConceptsRegistration frameworkImage dataMutual information-based registration algorithmRegistration parametersPortal imagesUltrasound image dataReal patient dataTomography image dataImage pixelsPixel correlationRegistration algorithmPatient setup verificationSegmentationPixel intensityMarkov random processInitial versionTransformation parametersAppropriate entropyImagesAlgorithmPatient dataFrameworkCT imagesLine processSetup verification
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 ResearchA minimax entropy registration framework for patient setup verification in radiotherapy
Bansal R, Staib L, Chen Z, Rangarajan A, Knisely J, Nath R, Duncan J. A minimax entropy registration framework for patient setup verification in radiotherapy. Computer Assisted Surgery 1999, 4: 287-304. PMID: 10631372, DOI: 10.1002/(sici)1097-0150(1999)4:6<287::aid-igs1>3.0.co;2-9.Peer-Reviewed Original ResearchMeSH KeywordsAlgorithmsEntropyHumansModels, TheoreticalPhantoms, ImagingRadiotherapyTomography, X-Ray Computed
1998
On the use of unshielded cables in ionization chamber dosimetry for total-skin electron therapy
Chen Z, Agostinelli A, Nath R. On the use of unshielded cables in ionization chamber dosimetry for total-skin electron therapy. Physics In Medicine And Biology 1998, 43: 539-546. PMID: 9533133, DOI: 10.1088/0031-9155/43/3/006.Peer-Reviewed Original Research