Ravinder Nath, PhD, FACR
Professor Emeritus of Therapeutic RadiologyDownloadHi-Res Photo
Cards
Appointments
Therapeutic Radiology
Primary
Contact Info
Therapeutic Radiology
PO Box 208040
New Haven, CT 06520-8040
United States
About
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Titles
Professor Emeritus of Therapeutic Radiology
Appointments
Therapeutic Radiology
EmeritusPrimary
Other Departments & Organizations
- Therapeutic Radiology
- Therapeutic Radiology Treatment Planning
- Yale Cancer Center
- Yale Ventures
Education & Training
- PhD
- Yale University (1971)
- MPhil
- Yale University, Physics (1969)
- Fellow
- Yale School of Medicine
Research
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Overview
Current projects include development of new brachytherapy modalities, dosimetry of new brachytherapy sources using TLD and gamma ray spectroscopy, stereotactic radiosurgery, evaluation of the impact of edema on the dosimetry of prostate implants.
Medical Research Interests
Brachytherapy; Cesium; Physics; Radiation; Radiation Oncology; Radiometry
Research at a Glance
Yale Co-Authors
Frequent collaborators of Ravinder Nath's published research.
Publications Timeline
A big-picture view of Ravinder Nath's research output by year.
Zhe Jay Chen, PhD, DABR, FASTRO, FAAPM
Kenneth B. Roberts, MD
Steven Pfau, MD
28Publications
8Citations
Publications
2024
AAPM Task Group Report 267: A joint AAPM GEC‐ESTRO report on biophysical models and tools for the planning and evaluation of brachytherapy
Chen Z, Li X, Brenner D, Hellebust T, Hoskin P, Joiner M, Kirisits C, Nath R, Rivard M, Thomadsen B, Zaider M. AAPM Task Group Report 267: A joint AAPM GEC‐ESTRO report on biophysical models and tools for the planning and evaluation of brachytherapy. Medical Physics 2024, 51: 3850-3923. PMID: 38721942, DOI: 10.1002/mp.17062.Peer-Reviewed Original ResearchCitationsConceptsDose delivery patternClinical medical physicistsBrachytherapy modalitiesMedical physicistsAAPM Task Group ReportAmerican Association of PhysicsBrachytherapy treatment planningTask group reportRadioactive sourcesDevelopment of biophysical modelsEuropean Society for Radiotherapy & OncologyGEC-ESTRORadiobiological effectsAAPMRadiation oncologyBrachytherapyBiophysical modelTreatment planningPhysicistsClinical effectsClinical backgroundIrradiated tissueDelivery patternsPractice guidelinesTreatment techniques
2019
Focused kV X-ray Radiotherapy for Ocular Diseases
Liu W, Yan H, MacDonald C, Roberts K, Chen Z, Nath R. Focused kV X-ray Radiotherapy for Ocular Diseases. International Journal Of Radiation Oncology • Biology • Physics 2019, 105: s237-s238. DOI: 10.1016/j.ijrobp.2019.06.345.Peer-Reviewed Original Research
2016
SU‐G‐BRA‐09: Estimation of Motion Tracking Uncertainty for Real‐Time Adaptive Imaging
Yan H, Chen Z, Nath R, Liu W. SU‐G‐BRA‐09: Estimation of Motion Tracking Uncertainty for Real‐Time Adaptive Imaging. Medical Physics 2016, 43: 3637-3637. DOI: 10.1118/1.4956933.Peer-Reviewed Original ResearchConceptsMV treatment beam imagesDose to normal tissuesKV fluoroscopic imagesTreatment beam imagesIntrafraction motion monitoringKV imagesImaging doseTracking uncertaintyBeam imagingPosition uncertaintyDose limitTime pointsProbability distributionMotion monitoringSupport vector machineAdaptive imagingLogistic regression modelsNormal tissuesMotionFluoroscopic imagesLogistic regressionBreathing dataConditional probability distributionImaging frameworkTumorMO‐A‐BRC‐00: TG167: Clinical Recommendations for Innovative Brachytherapy Devices and Applicators
Nath R. MO‐A‐BRC‐00: TG167: Clinical Recommendations for Innovative Brachytherapy Devices and Applicators. Medical Physics 2016, 43: 3689-3690. DOI: 10.1118/1.4957149.Peer-Reviewed Original ResearchConceptsBrachytherapy deviceDosimetry LaboratorySecondary Standard Dosimetry LaboratoryDosimetric considerationsClinical useApplication of brachytherapyDose distributionDosimetric characteristicsRadiotherapy deviceDose calculationClinical implementationGEC-ESTRORadiobiological issuesDose rateRoutine clinical useInstitutional review boardClinical introductionRandomized trialsCommissioning stageClinical recommendationsGold standardRadiation Safety CommitteePhysicistsBrachytherapyReview board
2013
SU‐E‐T‐100: The Influence Edge Electrons in Small Fields: Emphasis by the Difference of Copper‐Cerrobend Cutout
Chu A, Deng J, Feng W, Chen Z, Ahmad M, Nath R. SU‐E‐T‐100: The Influence Edge Electrons in Small Fields: Emphasis by the Difference of Copper‐Cerrobend Cutout. Medical Physics 2013, 40: 226-226. DOI: 10.1118/1.4814535.Peer-Reviewed Original ResearchConceptsCerrobend cutoutsEdge electronsFilm dosimetry techniquesSurface of phantomMonte Carlo calculationsVarian acceleratorPDD curvesElectron scatteringDose profilesDose outputElectron energyEnergy spectrumPrimary electronsDosimetry techniquesElectron beamBeam-qualityPhoton transmissionMonte Carlo simulationsSmall fieldsEdge scatteringChamber measurementsNarrow widthBremsstrahlungCerrobendElectronSU‐E‐T‐118: Small Dynamic Field Dosimetry by Gfachromic Film (EBT3) and 2D‐Array Diode
Chu A, Feng W, Lincoln H, Su F, Nath R. SU‐E‐T‐118: Small Dynamic Field Dosimetry by Gfachromic Film (EBT3) and 2D‐Array Diode. Medical Physics 2013, 40: 230-231. DOI: 10.1118/1.4814553.Peer-Reviewed Original ResearchCitationsConceptsFilm dosimetryField dosimetryChamber measurementsCentral axisAbsolute dose comparisonDynamic MLC fieldsVarian iX linacDiode arraySAD setupMLC fieldsSun NuclearIntrinsic buildupAbsolute doseFilm measurementsDose pointsDose comparisonDose valuesDosimetryDosimetersLow-doseEnergy-dependentSystematic noiseDose accuracyMapCHECKDiode performanceSU‐E‐T‐25: Investigating the Impact of Polymer‐Coating On the Dosimetric Characteristics of a 103Pd Brachytherapy Source Using Photon Spectroscopy
Chen Z, Kim J, Nath R. SU‐E‐T‐25: Investigating the Impact of Polymer‐Coating On the Dosimetric Characteristics of a 103Pd Brachytherapy Source Using Photon Spectroscopy. Medical Physics 2013, 40: 208-208. DOI: 10.1118/1.4814459.Peer-Reviewed Original ResearchConceptsPhoton energy spectrumHigh-purity germaniumDosimetric characteristicsEnergy spectrumLow-energy brachytherapy sourcesDose-rate constantDose rate constantPd-103Photon spectroscopyBrachytherapy sourcesPhoton spectrometerPd-103 seedsDosimetric propertiesBrachytherapy seedsPhotonic characteristicsDosimetry dataPhotonsSeed modelSpectraBrachytherapyHigh-resolutionDosimetricallyDosimetrySeed migrationConstantSU‐E‐T‐401: On the Use of Onboard Portal Dosimetry for Patient‐Specific QA of RapidArc Plans
Abbas H, Carlson D, Deng J, Nath R, Chen Z. SU‐E‐T‐401: On the Use of Onboard Portal Dosimetry for Patient‐Specific QA of RapidArc Plans. Medical Physics 2013, 40: 297-297. DOI: 10.1118/1.4814835.Peer-Reviewed Original ResearchConceptsPatient-specific QAPortal dosimetryRapidArc plansGantry anglePortal doseQA resultsVarian Medical SystemsX-ray sourcesDelta4 systemRapidArc deliveryIMRT plansDose verificationDose profilesPortal imagesPhoton fluenceGamma indexQA plansNeck casesQA criteriaDose comparisonRapidArcVerification planDosimetryGantryPreliminary results
2011
TU‐C‐BRB‐02: Personalized Assessment of KV‐CBCT Doses in Image Guided Radiotherapy of Pediatric Cancer Patients
Zhang Y, Yan Y, Nath R, Bao S, Deng J. TU‐C‐BRB‐02: Personalized Assessment of KV‐CBCT Doses in Image Guided Radiotherapy of Pediatric Cancer Patients. Medical Physics 2011, 38: 3753-3753. DOI: 10.1118/1.3613122.Peer-Reviewed Original ResearchCitationsConceptsKV-CBCT doseOccipital-frontal circumferenceMonte Carlo simulationsCalculated 3D dose distributionsEclipse treatment planning systemEGS4 Monte Carlo codeCritical structuresDose to critical structuresDose to critical organsKV-CBCT imagesTreatment planning systemDose assessmentDose estimatesMonte Carlo codeImage guided radiotherapyImage-guided radiotherapyCarlo simulationsDose distributionCT phantomIrradiated volumeCritical organsPelvic protocolsPlanning systemPediatric cancer patientsBody size of childrenTH‐E‐BRC‐06: Optimizing KVCBCT Scan Protocol for Individual Patient Undergoing IGRT
Deng J, Zhang Y, Bao S, Nath R. TH‐E‐BRC‐06: Optimizing KVCBCT Scan Protocol for Individual Patient Undergoing IGRT. Medical Physics 2011, 38: 3870-3870. DOI: 10.1118/1.3613574.Peer-Reviewed Original ResearchConceptsFull-fan modesNormal tissue sparingTissue sparingKVp settingsHalf-fanCalculated 3D dose distributionsEGS4 Monte Carlo codeAbsorbed doses to various organsMonte Carlo codeDoses to various organsImage qualityDose distributionDose depositionPediatric patientsDose contributionKVCBCTCT anatomyPhantom measurementsAbsorbed doseIndividual patientsPhantom studyImprove radiation safetyKVpOptimal mAsPhantom
Academic Achievements & Community Involvement
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Activities
activity Yale-New Haven Hospital
2006 - 2011CommitteesChairpersonDetailsRadiation Safety Committee and Radioactive Drug Research Committeeactivity Yale-New Haven Hospital
1992 - 2005CommitteesMemberDetailsRadiation Safety Committee and Radioactive Drug Research Committeeactivity American Association of Physicists in Medicine
1995 - 1995Professional OrganizationsChairpersonactivity American Association of Physicists in Medicine
1994 - 1994Professional OrganizationsPresidentactivity National Institutes of Health
1990 - 1993Peer Review Groups and Grant Study SectionsMemberDetailsRadiation Study Section
Honors
honor William D. Coolidge Award for Distinguished Contributions to Medical Physics
01/01/2001National AwardAmerican Association of Physicists in MedicineDetailsUnited Stateshonor Henschke Medal
01/01/1994National AwardAmerican Brachytherapy SocietyDetailsUnited States
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Mailing Address
Therapeutic Radiology
PO Box 208040
New Haven, CT 06520-8040
United States