Radiation Therapy (T) Practice Test
Build your confidence for Radiation Therapy (T). Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
Try a sample questionExam overview and details
The Radiation Therapy T exam is a comprehensive 47-question assessment designed to evaluate a candidate's core knowledge and applied understanding of radiation therapy principles and practices. This exam tests proficiency across the fundamental domains of the profession, including radiation physics, treatment planning, oncology, patient care, and safety protocols. It is intended for radiation therapy students nearing program completion, recent graduates preparing for clinical roles, and practicing therapists seeking to validate or refresh their foundational knowledge. Successfully passing this exam demonstrates a robust grasp of the technical and clinical competencies required to deliver safe, effective, and precise radiation treatments. Candidates will gain a clear benchmark of their readiness, identifying both strengths and areas for further study as they progress toward certification and clinical practice.
Sample Questions
Choose an answer and explore the explanation to see how practice works.
A treatment vault warning light remains off when the beam is enabled during morning warm-up. What should the therapist do?
A source guide tube for HDR treatment is found kinked after applicator connection but before source deployment. What should be done?
A chest-wall plan requires 0.5 cm bolus every other day. The therapist sees bolus was used yesterday and today is marked no bolus, but the skin reaction is severe. What is the right action?
A posterior oblique lung field passes through a large low-density lung volume before the mediastinal target. The plan uses heterogeneity correction. Why is heterogeneity correction important?
A patient with early-stage glottic cancer is planned with opposed lateral photon fields. The spinal cord lies posterior to the target. Why is this field arrangement commonly used?
Career Opportunities & Salary
Exam insights and study advice
Mastery of the topics in this exam directly translates to patient safety, treatment accuracy, and clinical efficacy. A thorough understanding of radiation physics ensures precise dose delivery to tumors while sparing healthy tissue. Knowledge of oncology and treatment planning is critical for tailoring effective regimens. Proficiency in safety protocols and patient care principles is non-negotiable for ethical and responsible practice. This exam matters because it assesses the essential knowledge that protects patients, guides clinical decision-making, and upholds the standards of the radiation therapy profession.
Recommended
These are the backgrounds the certifying body suggests. Check the vendor's own page for anything it formally requires.
What this exam covers
Use the published domain weights to plan your study. Practice results do not predict your certification exam score.
01Radiation Therapy Delivery
This domain covers Radiation Therapy Delivery, focusing heavily on the actual operation of treatment machines, patient positioning, verification procedures, and the precise administration of prescribed radiation doses to targeted areas.
02Radiation Therapy Planning
This domain centers on Radiation Therapy Planning, requiring deep knowledge of dose calculations, beam characteristics, isodose distributions, and patient contouring techniques necessary for optimal treatment planning and therapeutic success.
03Safety
This domain addresses Safety measures, including radiation protection standards, regulatory requirements, and emergency procedures designed to protect patients, staff, and the general public from unnecessary radiation exposure during all clinical procedures.
04Patient Care
This domain covers Patient Care principles, ensuring that candidates understand clinical interactions, ethical considerations, and physical assistance techniques necessary while treating individuals with cancer during their clinical engagements and daily therapeutic procedures.
05Medical Imaging
This domain focuses on Medical Imaging, evaluating how different imaging modalities are utilized effectively in localization, verification, and anatomical assessment during radiation therapy procedures to ensure accurate treatment execution.