Nova Scotia Health Authority

Safe and effective reirradiation depends on accurate cumulative dose assessment and consistent reporting of prior treatments. Current practices for dose accumulation vary widely across Canadian institutions, leading to inconsistencies in cumulative organ-at-r...

The new generation of cone-beam CT (CBCT) systems, such as HyperSight (Varian Medical Systems), provide CT-like image quality with improved HU accuracy. Dual-energy Cone beam CT (DE-CBCT)–based virtual non-contrast (VNC) imaging avoids additional non-contrast...

When cervical cancer patients with a hip prosthesis undergo standard-CBCT imaging, metal artifacts are present in the image due to the prosthesis high-Z material, leading to potential uncertainty in setup or contouring/dose calculation in oART. With the intro...

This work evaluates Varian’s HyperSight CBCT system installed on the Ethos radiotherapy platform using head-and-neck (H&N) patient cases to characterize the image quality and dose-calculation accuracy in the presence of metal-induced artifacts for CBCT-based...

Osteoarthritis (OA) affects nearly one in four adults worldwide and has become an escalating public health concern. Medical and surgical interventions often carry notable morbidity, cost, and side effects. As a noninvasive alternative, low-dose radiotherapy (...

This session is jointly organized by the Working Group on Radiation Dosimetry and Task Group 359 on FLASH (ultra-high dose rate) radiation dosimetry. The session will begin with an educational review of currently available radiation dosimeters used for both c...

Biologically‑guided Adaptive Radiotherapy (BIGART) on clinical MR‑linac systems are increasingly enabled by quantitative MRI that can sense early biology, beyond conventional anatomy. This symposium spotlights innovation in quantitative MRI and their potentia...

The mechanism responsible for the “FLASH-effect”, the observed healthy tissue sparing without impacting tumor control when irradiating at ultra-high dose-rates is still highly debated. After a decade of research, several hypotheses emerged, yet, none can expl...

Dose evaluations for brachytherapy have traditionally followed the TG-43 formalism, with its simplifying assumptions of a water-equivalent patient. However, patient-specific model-based dose calculation algorithms (MBDCAs) can offer more accurate doses for tr...

This scientific panel discussion will include 3 NIH-funded researchers investigating predictive models that are in the process of being validated prior to their use in clinical trials. Three medical physicists will describe their models and validation process...

Focused on the "fringes" of Medical Physics - in line with AAPM strategic plan - expanding beyond the current boundaries of Medical Physics. Collecting non-traditional science that belongs/should belong to medical physics. Fun, stimulating, and thought-provok...

Proton arcs, upright protons, and economics

This session will bring together researchers, clinicians, and industry partners engaged in preclinical radiation and imaging studies to discuss strategies for reducing animal use while maintaining scientific rigor. With recent federal guidelines emphasizing t...

Radiation oncology is undergoing a transformative shift with the emergence of novel modalities that challenge traditional paradigms of dose delivery and biological response. This symposium will explore three cutting-edge approaches—Spatially Fractionated Radi...