About the department

The mission of the Department of Radiation Oncology is to improve pediatric cancer cure rates and minimize treatment-related long-term and secondary adverse effects. Radiation therapy has historically been considered a pillar of cancer therapy and here at St. Jude, it has long been instrumental in advancing treatment strategies for several types of pediatric cancers. Our faculty are reimagining pediatric radiation therapy and redefining its scope. 

Our team provides pediatric and young adult cancer patients with expert and compassionate clinical care in close collaboration with pediatric oncologists, surgeons and other medical specialists. The department fully embraces St. Jude’s “bench to bedside” mission and strives to conduct innovative research that advances knowledge and improves the outlook for all children. We are refining and redefining the role of imaging in pediatric radiation therapy in cancer treatment through utilizing the latest technologies and by leveraging valuable institutional and global collaborations.

Research

The Department of Radiation Oncology is performing critical research in the fields of pediatric oncology, pediatric radiation oncology and medical physics. We are exploring new indications for irradiation and combined modality therapy, intelligent sequencing and advanced technology including proton therapy. These endeavors are allowing us to focus on advancing cures for pediatric cancers with the lowest survival rates as well as for children with relapsed disease. 

We are also optimizing radiation therapy in order to deliver the precise type and amount of therapy needed to maintain survival rates while reducing the overall burden of therapy. This allows us to reduce the toxicity of cancer therapy and enhance the quality of life for the children we treat. 

man working in radiation lab

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Technology and protocols

The Department of Radiation Oncology is devoted to providing the highest quality patient care through integrating cutting-edge imaging technologies into all aspects of the radiation therapy process and conducting novel pediatric-focused research. 

Chair

Thomas E. Merchant, DO, PhD

Member, St. Jude Faculty 
Chair, Radiation Oncology Department
Baddia J. Rashid Endowed Chair in Radiation Oncology
Chairman, Radiation Oncology Discipline, Children's Oncology Group

Clinical Faculty

Medical Physics Faculty

Research and treatment team

The department is supported by dedicated experts in physics and medical imaging, software development and IT, dosimetrists, nurse practitioners, nurses, radiation therapists and an administrative team. 

More information

Studies and clinical trials


Related topics

Selected publications


View current openings

Medical Physicist Faculty Position, Department of Radiation Oncology
St. Jude Children's Research HospitalThe Department of Radiation Oncology at St. Jude Children’s Research Hospital is recruiting medical physicists to join its physics faculty. Faculty appointment to either a Clinician Scientist track or Clinical track is awarded based on the candidate’s expertise, experience and demonstrated record of academic achievement. The successful candidate will have a PhD in medical physics, engineering, or related physical science. Certification in radiation oncology physics by ABR/ABMP or eligibility for certification is highly desired. Board certification is expected within three years of employment. Foreign equivalents for these qualifications will be considered if acceptable. The department is focused on research and treatment of pediatric patients with an emphasis on brain, musculoskeletal, and solid tumors. Preference will be given to candidates with a strong interest in proton therapy and developing new methods of targeting, treatment planning, delivery, and outcome modeling. The department supports four clinician scientist faculty physicists, six clinical faculty physicists, three dosimetrists, two medical physics assistants and dedicated engineering, information systems, and research staff, inclusive of research scientists, post-doctoral fellows, and clinical research associates. The department includes five full-time pediatric radiation oncologists and supportive nursing, radiation therapy and child life specialist teams. The department is one of the largest pediatric radiation oncology facilities in the world and treats approximately 300 children, adolescents, and young adults each year.Our Proton Therapy Center is the first in the world dedicated solely to the treatment of children with cancer. The Proton Therapy Center is equipped with the Hitachi PROBEAT-V System, including two gantry rooms and a fixed beam room. Each room has a high-precision patient positioning, volumetric CBCT image-guidance system and a dedicated pencil-beam scanning nozzle. Video-based surface image guidance is also available. The department has 45,000 square feet of clinical space that includes a dedicated clinic, treatment planning, therapy, and anesthesia support.  It houses a Varian TrueBeam linear accelerator system with image-guidance and multiple imaging platforms (Spectral CT, PET/CT, 1.5T MR and 3.0T MR simulators) dedicated to treatment planning and on-treatment assessment.St. Jude Children’s Research Hospital, ranked among top 5 pediatric cancer hospital by US News & World Report in 2023, is dedicated to supporting the professional and career development of faculty allowing for protected time and support based on effort distribution and responsibilities. St. Jude faculty receive generous benefits, such as retirement compensation plans, professional development allowance, and tuition assistance. Brief interviews can be arranged during the AAPM Annual Meeting in Los Angeles from July 20th to July 25th. We encourage graduates from the Medical Physics program in 2025 to apply for the positions.How to apply:Interested candidates should submit their curriculum vitae, a letter outlining their career plans and interests that align with the Department’s mission, and the names of three references directly online.For more information:Chia-Ho Hua, PhD, Member, Director of Medical Physics Researchor Chin-Cheng Chen, PhD, Associate Member, Chief Clinical PhysicsDepartment of Radiation OncologySt. Jude Children’s Research Hospital262 Danny Thomas Place, MS 210Memphis, TN 38105Chia-ho.hua@stjude.orgChin-cheng.chen@stjude.org Diversity, Equity and Inclusion St. Jude Children’s Research Hospital has a diverse, global patient population and workforce, built on the principles of diversity, equity and inclusion. Our founder Danny Thomas envisioned a hospital that would treat children of the world—regardless of race, religion or a family’s ability to pay. Learn more about our history and commitment.Today, we continue the mission to advance cures and means of prevention for pediatric catastrophic diseases through research and treatment. As we accelerate this progress globally, we believe our legacy of diversity, equity and inclusion is foundational to success. With the commitment of leaders at all levels of the organization, we strive to ensure the St. Jude culture, leadership approaches and talent processes are equitable and culturally responsive. View our Diversity, Equity and Inclusion Report to learn about the hospital’s roots in diversity, equity and inclusion, where we are today and our aspirations for an even better future.St. Jude is an Equal Opportunity EmployerNo Search FirmsSt. Jude Children's Research Hospital does not accept unsolicited assistance from search firms for employment opportunities. Please do not call or email. All resumes submitted by search firms to any employee or other representative at St. Jude via email, the internet or in any form and/or method without a valid written search agreement in place and approved by HR will result in no fee being paid in the event the candidate is hired by St. Jude.
Physicist II
Performs radiation physics services for pediatric patients in the Department of Radiation Oncology in accordance with the standards of practice. Ensures the delivery of accurate radiation doses to pediatric patients. Performs other related duties as assigned or directed to meet the goals and objectives of the department and the organization.Job Responsibilities:Performs assigned radiation physics duties to ensure the delivery of accurate radiation doses to pediatric patients by coordinating and interacting with appropriate personnel.Participates in development and implementation of policies and procedures in radiation physics and radiation safety to facilitate accurate and safe delivery of radiation doses in accordance with acceptable protocols.Provides and supports learning needs through educational activities that promote continuous improvement and compliance with patient care standards.Participates in budget preparation and equipment specifications and purchases by interacting with the director to ensure adequate and uninterrupted services to patients.Organizes and documents all radiation physics records in coordination with appropriate staff and physicians to ensure accurate and timely performance of procedures.Participates in departmental quality improvement/control activities. Develops, implements, maintains and reports department quality improvement plan in accordance with department, hospital and The Joint Commission standards. Participates in interdepartmental collaborative quality improvement activities. Assists the director of radiation physics in maintaining quality control program for Radiation Therapy. Maintains the standards of JCAHO.Assists with the orientation and training of new staff.Performs other related duties as assigned or directed to meet the goals and objectives of the department and the organization.Maintains regular and predictable attendance.Minimum Education and/or Training:MS or PhD in Physical Sciences required.Minimum Experience:Four (4) years of experience with MS in Physics.Completion of Part II of the American Board of Radiology Exam preferredLicensure, Registration and/or Certification Required by Law:NoneCompensationIn recognition of certain U.S. state and municipal pay transparency laws, St. Jude is including a reasonable estimate of the compensation range for this role. This is an estimate offered in good faith and a specific salary offer takes into account factors that are considered in making compensation decisions including but not limited to skill sets, experience and training, licensure and certifications, and other business and organizational needs. It is not typical for an individual to be hired at or near the top of the salary range and compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current salary range is $138,320 - $262,080 per year for the role of Physicist II.Explore our exceptional benefits!Diversity, Equity and Inclusion St. Jude Children’s Research Hospital has a diverse, global patient population and workforce, built on the principles of diversity, equity and inclusion. Our founder Danny Thomas envisioned a hospital that would treat children of the world—regardless of race, religion or a family’s ability to pay. Learn more about our history and commitment.Today, we continue the mission to advance cures and means of prevention for pediatric catastrophic diseases through research and treatment. As we accelerate this progress globally, we believe our legacy of diversity, equity and inclusion is foundational to success. With the commitment of leaders at all levels of the organization, we strive to ensure the St. Jude culture, leadership approaches and talent processes are equitable and culturally responsive. View our Diversity, Equity and Inclusion Report to learn about the hospital’s roots in diversity, equity and inclusion, where we are today and our aspirations for an even better future.St. Jude is an Equal Opportunity EmployerNo Search FirmsSt. Jude Children's Research Hospital does not accept unsolicited assistance from search firms for employment opportunities. Please do not call or email. All resumes submitted by search firms to any employee or other representative at St. Jude via email, the internet or in any form and/or method without a valid written search agreement in place and approved by HR will result in no fee being paid in the event the candidate is hired by St. Jude.

Contact us

Department of Radiation Oncology
MS 210, Room I3131
St. Jude Children's Research Hospital
262 Danny Thomas Place
Memphis, TN 38105-3678

Email: thomas.merchant@stjude.org
Phone: (901) 595-3604
Fax: (901) 595-3113

Preferred contact method: Phone