What question did this study set out to answer?

This research aims to validate the EPIbeam system as a reliable quality assurance tool for personalized treatment plans.

January 10, 2026Progress in Medical Physics0 citationsOpen Access

Clinical Validation of EPIbeam as a Patient-Specific Pre-Treatment Quality Assurance System

EYEuntaek YoonSeoul National University ILInbum LeeSeoul National University YHYoonsuk Huh

Key Points

This research aims to validate the EPIbeam system as a reliable quality assurance tool for personalized treatment plans.
Conducted clinical evaluation of EPIbeam system

Structured PICO

Does EPIbeam provide accurate patient-specific pre-treatment quality assurance compared to MapCHECK3 for IMRT and VMAT plans?

Population

54 intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) plans across various treatment sites, plus additional extended-field plans and square fields

Intervention

EPIbeam patient-specific pre-treatment quality assurance system

Comparator

MapCHECK3 quality assurance system (for VMAT plans)

Outcome

Gamma passing rates (GPR) under various criteria (3%/3 mm, 3%/2 mm, 2%/2 mm, 2%/1 mm)surrogate

EPIbeam is a clinically valid and reliable patient-specific pre-treatment QA system for treatment plans with field sizes up to 24x24 cm2, showing comparable or superior gamma passing rates to MapCHECK3.

Abstract

Euntaek Yoon, Inbum Lee, Yoonsuk Huh, Bo-Wi Cheon, Jin Jegal, Hyeongmin Jin, Sung Hyun Lee, Seonghee Kang, Chang Heon Choi, Jong Min Park, Jung-in Kim, Jaeman Son. Progress in Medical Physics 2025;36:139-46. https://doi.org/10.14316/pmp.2025.36.4.139

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