Nuclear Science and Techniques Jan 31 2026 Bridging speed and accuracy in radiation therapy QA Led by Professor Fu Jin, the study addresses a critical challenge in radiation therapy: balancing the computational speed and accuracy of EPID-based dose verification. EPID has emerged as a key tool for real-time in vivo dose verification. However, MC simulation-long regarded as the "gold standard" for dose calculation-faces a dilemma: increasing the number of simulated particles ensures higher