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Ronnie Lozano, Program Chair and Associate Professor

Program Chair and Associate Professor, Ronnie Lozano
Encino Hall
Room 220D Phone: 512-245-9081
Fax: 512-245-1477

Ronnie Lozano is currently the Chair and a tenured Associate Professor for the Radiation Therapy Program at Texas State University.  Ronnie has earned a Ph.D. in Adult, Professional and Community Education at Texas State University.  He has earned a Master of Science in Radiologic Science with a major in Education from Midwestern State University, and he holds a baccalaureate degree in Health Administration.  He has been involved in higher education for the past 22 years at Texas State.  Graduating from the Radiation Therapy Program at the Cancer Therapy and Research Center in San Antonio in 1986, he has a total of 34 years experience in radiation therapy.   Dr. Lozano is credentialed by the American Registry of Radiologic Technologists, and licensed by the Texas Department of State Health Services.  He has authored multiple chapters in three editions of the mainstream radiation therapy textbook, Principles and practice of radiation therapy. St. Louis, Mo:  Mosby-Year Book Inc.  Ronnie has seen the changes in the practices of treatment delivery over the years and is interested in the variables that affect learning, the sharing of knowledge among staff radiation therapists, and the continuing evolution of best practices. His current concentration is on the utilization of new technologies and teaching methods to bridge learning gaps between the classroom and the fast-paced changing environment of modern-day cancer centers.

Jessica Smith, Clinical Coordinator

Encino Hall
Room 220C Phone: 512-245-3523
Fax: 512-245-1477

Jessica Smith, MPH, RT(T) received her baccalaureate degree in radiation therapy from Southwest Texas State University in 2000. She completed her Master of Public Health with a major in health policy and management from Texas A&M Health Science Center in 2008. Jessica is credentialed by the American Registry of Radiologic Technologists and licensed by the Texas Medical Board. She joins the program after having worked as a radiation therapist for over twenty years.

Megan Trad, Professor

Associate Professor, Megan Trad
Encino Hall
Room 220E  Phone: 512-245-7047
Fax: 512-245-1477

Megan Trad, Ph.D., MSRS., RT(T) received her Master of Science in Radiologic Science with a major in education in the radiologic sciences from Midwestern State University.  She received her Ph.D. in Adult, Community, and Professional Education from Texas State University in 2012. Her doctoral work focused on the use of engaged scholarship as a teaching methodology to better equip radiation therapists to enter the professional workforce.  Since then, she has published extensively on the topic of engaged scholarship and other innovative teaching methodologies, as well as identifying deficits in learning among university aged students on the topics of cancer prevention, detection, and screening.  Dr. Trad is credentialed by the American Registry of Radiologic Technologists, licensed by the Texas Department of State Health Services, and holds CPR certification for both adults and infants.  She is a named editor in the 5th edition of Washington and Leaver's Principles and Practice of Radiation Therapy and authored five chapters within the textbook. Dr. Trad is the Chair of the editorial review board for the American Society of Radiologic Technologists journal: Radiation Therapist. She serves as an associate editor for the Journal of Medical Imaging and Radiation Sciences, as well as an accreditation site visitor for the JRCERT.  She was acknowledged as a Texas State Rising Star in 2010, as well as educator of the year in 2011 by the Association of Educators in Imaging and Radiologic Sciences.

Trina L. Dillard, Virtual Simulation and Electronic Systems Education Coordinator

Clinical Lecturer, Trina Dillard
Encino Hall
Room 220G  Phone: 512-245-7047
Fax: 512-245-1477

Trina L. Dillard, RT(R)(T), CMD has been an energetic, optimistic caregiver for more than 25 years. She has held positions as an x-ray technologist, radiation therapist, and medical dosimetrist.  She has served on the advisory and leadership council for US Oncology, and most recently held positions with Texas Oncology as Chief Radiation Therapist/Dosimetrist at a cancer center in Austin and San Marcos. She has also been a radiation therapy clinical education supervisor for Texas State University since 2000.  She also maintains a faculty position for program development of the radiation therapy program serving as the coordinator of virtual reality simulation and electronic systems education.  Her experience and skill set allows the implementation of our new virtual Linac “flight simulator” into the radiation therapy program’s curriculum. She is also working as a Client Resource Manager for RC Billing and a Consultant for Revenue Cycle, Inc.

Her expertise involves the entire radiation therapy process of care.  She loves to share the knowledge she gained from her rewarding career involving patient care, simulation techniques, dosimetry reasoning, reproducible radiation therapy treatments and the documentation required for all these processes.  She has familiarity with the latest technology and equipment which include many types of software, systems and equipment.  Trina’s portfolio include Varian Linacs, Exac trac, kv/conebeam, Radiocam, BAT, GE LightSpeed and Optima 580RT CT; 4D simulation and planning, Varian and Nucletron HDR; Eclipse, Brachyvision, and Oncentra treatment planning; Mosaiq; RadCalc; Mysis; and iKnowMed.

Trina’s professional memberships and certifications include the American Registry of Radiologic Technologists, the American Society of Radiologic Technologists, the Medical Dosimetrist Certification Board, and the Texas Department of Health. She studied radiation therapy at Washburn University, radiography at Labette Community College and became a Certified Medical Dosimetrist in 2001.


Christina Boman, Lecturer, Patient Care in Radiation Oncology

Lecturer, Brandi Wilburn

Encino Hall
Room 220F
Phone: 512-245-9283
Fax: 512-245-1477

Christina (Hammond) Boman earned a Bachelor of Healthcare Administration from Texas State University in 2011.  She continued her education graduating with a Bachelor of Science in Nursing from Texas State University in 2014, then earned her Master of Science in Nursing from the University of Cincinnati in 2019.  Her graduate degree concentration was Adult Gerontology Primary Care Nurse Practitioner.  Mrs. Boman has skilled nursing experience and clinical practice working at facilities that include Seton Medical Center, Hospice Austin, and Texas Oncology-Austin Brain Tumor Center. She currently works as a nurse practitioner for Texas Oncology with a focus on medical oncology, radiation oncology, as well as hematology. Her professional credentials include licensure by the Texas Board of Nursing, AHA Basic Life Support, AANP Certification Board as well as Prescriptive Authority for the state of Texas.  Her professional memberships include the American Nurses Association, Texas Nurses Association, Oncology Nursing Society, Texas Nurse Practitioners, Sigma Theta Tau International Honor Society of Nursing, Gerontological Advanced Practice Nurses Association, and the American Academy of Nurse Practitioners.

Jacob Rembish, Lecturer, Radiation Therapy Physics

Lecturer, Jacob "Jake" Rembish


Encino Hall
Room 220F  Phone: 512-245-7047
Fax: 512-245-1477


Jacob Rembish is currently a Medical Physics Ph.D. candidate at UT Health San Antonio with a BS in Radiological Health Engineering from Texas A&M University. He has done extensive research on the use of Monte Carlo dose calculation algorithms in Stereotactic Radiosurgery as well as the automation of clinical quality assurance tasks in radiation oncology. Jacob is a member of the American Association of Physicists in Medicine, as well as a member of the American Board of Radiology’s Initial Certification Advisory Committee. Additionally, Jacob is a pre-doctoral fellow in the UTHSCSA Cancer Research Training Program, supported by the Cancer Prevention and Research Institute of Texas funded institutional Research Training Award.

Otis Johnson, Lecturer, Dosimetry, Treatment Planning, Quality Assurance


Otis Hiroshi Johnson earned his Bachelor of Science degree in Radiation Therapy in 2004 at Texas State University.  His clinical experience includes working as a staff radiation therapist,  at Thomas Jefferson University, working at the same facility as a medical dosimetrist; working as an application specialist in dosimetry for Computerized Medical Systems (CMS), and in dosimetry and in clinical operations with Elekta Medical Equipment where he currently remains employed.  Mr. Johnson has extensive experience as an application specialist providing hands-on training and education to Elekta clients using the Monaco Treatment Planning System.  As an application specialist he as provided client education and training in aspects of treatment planning involving IMRT, contouring and 3-D plans. Computerized simulation basic contouring, beam placement, and ports.  IGRT through I-Beam, localizing with an ultrasound.  Applications also includes brachytherapy, preparing sealed radioactive sources for implantation and assisting in low-dose-rate manual after-loading.  Other procedures include ultrasonic simulation of brachytherapy procedures, ensuring reproducible setup; operation and performing daily quality assurance on a high-dose-rate remote after-loader; preparing and checking treatment plans based on physician prescription and consulting with physicians on their patient treatment plan.  Job duties have also included providing customer support to dosimetrists, medical physicists, and oncologists with issues in their treatment plans.