This work investigated the differences between multileaf collimator (MLC) positioning
accuracy determined using either log files or electronic portal imaging devices (EPID) and …

Purpose: In advanced radiotherapy treatments such as intensity modulated radiation therapy
(IMRT) and volumetric modulated arc therapy (VMAT), verification of the performance of the …

Purposes Multileaf collimator (MLC) positional accuracy during dynamic intensity
modulation radiotherapy (IMRT) delivery is crucial for safe and accurate patient treatment …

Background In modern radiotherapy, it is crucial to monitor the performance of all linac
components including gantry, collimation system and electronic portal imaging device …

Objective: In radiotherapy treatments, it is crucial to monitor the performance of linear
accelerator (linac) components, including gantry, collimation system and electronic portal …

A virtual EPID standard phantom audit (VESPA) has been implemented for remote auditing
in support of facility credentialing for clinical trials using IMRT and VMAT. VESPA is based …

Historically, several different electronic technologies have been utilized to replace the role of
radiographic films in capturing the images, including the scanning liquid ionization chamber …

The increasing popularity of intensity‐modulated arc therapy (IMAT) treatments requires
specifically designed linac quality assurance (QA) programs. Gantry angle is one of the …

A new tool with the potential to verify and track jaw position during delivery has been
developed. The method should be suitable for independent quality assurance for jaw …

Purpose High accuracy of the beam‐irradiated position is required for high‐precision
radiation therapy such as stereotactic body radiation therapy (SBRT), volumetric modulated …