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Christopher Tien, PhD, DABR

Assistant Professor of Therapeutic Radiology; Lead Physicist for Brachytherapy, Therapeutic Radiology

Contact Information

Christopher Tien, PhD, DABR

Mailing Address

  • 20 York St, Yale-New Haven Hospital

    NP LL 69, Smilow Radiation Oncology

    New Haven, CT 06510

    United States

Appointments

Biography

Dr. Christopher J. Tien is an Assistant Professor and Lead Brachytherapy Physicist in the department of Therapeutic Radiology. Clinically, he is a board-certified therapeutic medical physicist appointed as a Medical Physicist II at Yale-New Haven Hospital. His translational research largely focuses on brachytherapy (gynecological, prostate, ocular, and skin) applications, radiobiological modeling, and radiosurgery.

Previously, Dr. Tien practiced at a community hospital in suburban Chicago for 3 years after completing his residency at Brown University/ Rhode Island Hospital. He completed his PhD when he was 25 years old from the University of Florida, which he attended on a full fellowship.

Dr. Tien is a full member of the American Brachytherapy Society (ABS), the American Association of Physicists in Medicine (AAPM), the American Society for Radiation Oncology (ASTRO), and the Yale Cancer Center. He is currently a member of the AAPM Brachytherapy Subcommittee and has been appointed to the AAPM Board of Directors. He also serves on the AAPM Regional Organization Committee, AAPM Medical Physics Education Subcommittee and AAPM Unit #66 (Leadership and Education).

Education & Training

  • Medical Physics Resident
    Brown University (Warren Alpert Medical School) (2013)
  • PhD
    University of Florida, Medical Physics (2011)
  • MS
    University of Michigan, Nuclear Engineering and Radiological Sciences (2008)
  • BS
    University of Michigan, Nuclear Engineering and Radiological Sciences (2007)

Activities

  • Session Moderator: "Let's Get Practical: Advice for the Brachytherapy Physicist"
    Denver, United States 2022
  • The Impact Of Sublethal Damage Repair On Biological Dose For A Stepping-source Brachytherapy Delivery In A Single-fraction Prostate Treatment.
    Denver, United States 2022
  • Investigating The Implications Of A Newly-available Higher Initial Source Strength For Ultrahypofractionated High-dose-rate 192Ir Brachytherapy In Prostate Monotherapy
    Denver, United States 2022
  • Automated Channel Identification For Efficient Brachytherapy Treatment Planning
    Denver, United States 2022
  • Investigating The Efficacy Of Simulation-Based Education For Interstitial Gynecologic Brachytherapy Using A Novel US/MR/CT-Compatible Gynecologic Phantom
    Denver, United States 2022
  • The Effect Of Quantum Noise On A Novel Multilateration-based Brachytherapy Source Localization Approach
    Denver, United States 2022
  • Session Moderator: Practical Considerations for the Clinical Physicist
    New Orleans, United States 2022
  • Single-Institution Experience with Implementation of Varian Multi-channel Applicator
    Webinar, Varian Medical Systems User's Meeting at ASTRO 2021; Chicago, United States 2021
  • Grid-Based Boltzmann Solver for Dose Transport in Gynecological Brachytherapy Medical Application
    State College, United States 2021
  • Single-Channel Cylinders with Metal Stems: Considerations in Brachytherapy Dose Reporting to Clinical Trials
    Virtual 2021
  • Utilizing Tumor Control Probability to Aid in Selection of Multi-Dwell or Single-Dwell Methodology for Leipzig-Style Applicators: A Preliminary Study
    Virtual 2021
  • Single implant hybrid interstitial brachytherapy for cervical cancer during the COVID-19 pandemic: An institutional approach
    Virtual 2021
  • Clinical surface brachytherapy: A primer on applicators, dose calculations, and case studies
    Hartford, United States 2019
  • The impact of model-based dose calculation algorithms on clinical brachytherapy
    Nashua, United States 2019
  • The Theoretical Benefits of a 15 Ci Ir-192 Source for HDR Brachytherapy.
    Miami, United States 2019
  • Feasibility of Using Multiple Positions in Leipzig Applicator to Increase Target Coverage
    Miami, United States 2019
  • HDR Monotherapy In Prostate Cancer: Radiobiological Considerations When Determining Biologically Effective Dose in Clinical Trials
    Boston, United States 2017
  • Plenary Session: Early Experience with Brachytherapy Model-Based Dose Calculation Algorithm: Commissioning and Retrospective Comparison with Historical Template
    San Francisco, United States 2008

Honors & Recognition

AwardAwarding OrganizationDate
Editor's Recognition Award as Outstanding ReviewerBrachytherapy (Journal award)2019
Judith Stitt Award for Best physics abstract (of 300+ submissions)American Brachytherapy Society2018
Plenary invited speaker at Annual National MeetingAmerican Brachytherapy Society2018
Best Medical Physics Graduate StudentAmerican College of Medical Physics2011
Young Investigator's Symposium 2nd place, ACMP National ConferenceAmerican College of Medical Physics2011
FLAAPM: Young Investigator's Symposium 2nd placeFlorida AAPM2010

Professional Service

OrganizationRoleDate
AAPM Spring Clinical Meeting 2023: Planning CommitteeSpring Clinical Meeting Subcommittee 20232022 - Present
Connecticut Area Medical Physics SocietyConnecticut Area Medical Physics Society (CAMPS) Winter Meeting (Zoom/In-person hybrid) 20222022
Medical Equipment Sterilization Committee (in Preparation for Joint Commission)Member2022
AAPM: Spring Clinical Meeting 2022: Session ModeratorModerator2022
American Brachytherapy Society: Annual Meeting 2022 Session ModeratorModerator2022
AAPM Annual Meeting 2022: Abstract Reviewer (Outcomes Modeling section)Abstract Grader 2022 - Present
American Association of Physicists in Medicine Task Group 317: Catheter, Needle, and Applicator Tracking Technology in BrachytherapyReviewer2022 - Present
American Association of Physicists in Medicine (AAPM): National LevelTask Group/ Medical Physics Practice Guidelines for Brachytherapy: an update to AAPM TG-562022 - Present
Connecticut Area Medical Physics SocietyConnecticut Area Medical Physics Society (CAMPS) Summer Meeting (Zoom) 20212021
American Association of Physicists in Medicine (AAPM): National LevelMeeting Analysis and Evaluation Committee2021 - Present
American Association of Physicists in Medicine (AAPM): National LevelBoard of Directors2021 - Present
City College of New York and Memorial Sloan-Kettering Cancer Center Partnership for Cancer Research, Research Education and Community Outreach Award for Pilot ProjectsExternal Reviewer2021
Journal of Contemporary BrachytherapyReviewer2021 - Present
ABS Annual Meeting 2021,2022: Abstract Reviewer (Physics section)Abstract Grader 2021 - Present
ASTRO Annual Meeting 2021,2022: Abstract Reviewer (Physics section)Abstract Grader 2021 - Present
American Association of Physicists in Medicine (AAPM): National LevelNational Brachytherapy Subcommittee2021 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelConnecticut Area Medical Physics Society (CAMPS)2021 - Present
American Association of Physicists in Medicine (AAPM): National LevelRegional Organization Committee2021 - Present
American Brachytherapy Society (ABS)Reviewer2021 - Present
American Society of Radiation Oncology (ASTRO)Reviewer2021 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelRepresentative2021 - Present
American Association of Physicists in Medicine (AAPM): National LevelUnit #66: AAPM Leadership and Education2020 - Present
American Association of Physicists in Medicine (AAPM): National LevelRadiation Oncology Medical Physics Education Subcommittee2020 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelSocial Media Consultant2020 - Present
APEx Preparation Committee: Brachytherapy Division of PhysicsMember2019
American Association of Physicists in Medicine (AAPM): Regional LevelImmediate Past President2019
Medical Physics Residency Program Steering CommitteeMember2019 - Present
AAPM Annual Meeting 2019,2020,2021,2022: Abstract Reviewer (Brachytherapy section)Abstract Grader 2019 - Present
AAPM Annual Meeting 2019,2020,2021,2022: Abstract Reviewer (Radiation biology section)Abstract Grader 2019 - Present
American Association of Physicists in Medicine (AAPM): National LevelReviewer2019 - Present
Connecticut Area Medical Physics SocietyConnecticut Area Medical Physics Society (CAMPS) Winter Meeting 20182018
Connecticut Area Medical Physics SocietyConnecticut Area Medical Physics Society (CAMPS) Summer Meeting 20182018
Connecticut Area Medical Physics SocietyConnecticut Area Medical Physics Society (CAMPS) Spring Meeting 20182018
American Association of Physicists in Medicine (AAPM): Regional LevelConnecticut Area Medical Physics Society (CAMPS)2018
Yale Cancer Center: Radiobiology and Genome Integrity DivisionMember2018 - Present
International Journal of Radiation Oncology, Biology, PhysicsReviewer2018 - Present
American Brachytherapy Society (ABS)Member2017 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelConnecticut Area Medical Physics Society (CAMPS)2017 - 2019
American Association of Physicists in Medicine (AAPM): Regional LevelConnecticut Area Medical Physics Society (CAMPS)2017
Medical Physics Residency Program Admissions CommitteeMember2017 - Present
BrachytherapyReviewer2017 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelConnecticut Area Medical Physics Society2016 - Present
Medical Physics Residency Program: Special Topics Rotation - Gamma KnifeMentor2016 - 2019
Medical Physics Residency Program: CT Simulation RotationMentor2016 - 2018
Medical Physics Residency Program: Brachytherapy RotationMentor2016 - Present
Department Brachytherapy Committee: Physics DivisionRepresentative2016 - Present
Physics of Radiation Therapy for Resident Physicians: Radiation Measurements and Calibration sectionInstructor2016 - Present
Yale School of Medicine Symphony Orchestra (YMSO): CellistCellist2016 - Present
Frontiers in Oncology: Radiation OncologyReviewer2014 - Present
American Society of Radiation Oncology (ASTRO)Member2013 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelMidwest Chapter2013 - 2016
American Association of Physicists in Medicine (AAPM): Regional LevelNew England Chapter AAPM (NEAAPM)2012 - 2013
American Association of Physicists in Medicine (AAPM): National LevelAAPM Task Group (TG) 180: Image Guidance Doses Delivered During Radiotherapy: Quantification, Management, and Reduction2012 - 2013
Physics in Medicine and BiologyReviewer2012 - Present
American Association of Physicists in Medicine (AAPM): Regional LevelNew England Chapter AAPM (NEAAPM)2011 - 2013
Medical PhysicsReviewer2010 - Present
Journal of Applied Clinical Medical PhysicsReviewer2010 - Present
American Association of Physicists in Medicine (AAPM): National LevelMember2007 - Present

Departments & Organizations