Richard A. Popple, PhD

To investigate the effect of bolus–surface air gap on surface dose calculation for a clinical 6 MV photon beam.

Treatment planning system (TPS) beam modelling is identified as the largest cause of independent dosimetry audit failure. This study aims to develop and validate a universal beam model (UBM) specific to single-iso multi-target (SIMT) stereotactic radiosurgery...

Automated radiotherapy treatment planning pipelines can reduce planning time and improve standardization, but clinical adoption is often limited by the time and specialized automation expertise required to define, configure, and maintain these pipelines. We d...

MLC backlash is a linac failure mode that results in MLC positional error that has been demonstrated to not be prevented by the linac’s internal safety systems [1]. This study aims to inform on the clinical significance of MLC positional error due to MLC back...

Small metallic objects such as titanium and tantalum surgical clips are frequently present in clinical treatment planning images. Because these objects produce streak artifacts in planning CT images and may lie within the beam path, there is concern that they...

CT-guided adaptive radiotherapy (CTgART) introduces substantial workflow complexity and resource demands. While clinical experience is expected to improve efficiency, the magnitude and structure of adaptive learning have not been well quantified using objecti...

CT-guided online adaptive radiotherapy(CTgART) introduces substantial per-patient variability in session duration, complicating prospective scheduling. This study evaluates whether system-reported reference plan calculation metrics, specifically reference pla...

Clinical medical software is often deployed through streamed environments such as Citrix, where conventional automation methods fail due to the lack of native operating system controls and application programming interfaces. This work presents a visual-langua...

For single-isocenter multi-target (SIMT) stereotactic radiosurgery (SRS), benchmarking, auditing and inter-institutional standardization of dose delivery remains challenging as it requires specialized equipment and expertise. Electronic portal imaging devices...

Numerous studies have quantified target baseline positional drift rates across anatomic sites; however, these investigations are often limited by surrogate localization methods (e.g., surface-guidance), single-site analyses, or limited datasets. Here, we leve...