All conference submissions

Increased use of portal imaging for quality assurance of SRS/SBRT plans results in a higher workload for the center detector elements compared to the peripheral elements. This study aims to evaluate the long-term stability of the...

Conventional radiotherapy plan evaluation relies on isolated dose–volume metrics that provide limited insight into the magnitude and clinical significance of deviations from protocol-defined organ-at-risk (OAR) objectives. We pro...

Plastic scintillators offer fast data acquisition, small sensitive volumes suitable for small field dosimetry, and tissue equivalence, making them well suited for LINAC commissioning. This study characterizes the BluePhysics (BP)...

This study aimed to develop a three-dimensional dose distribution measurement system using a plastic scintillator (PS), cooled charge-coupled device (CCD) camera, and electronic portal imaging device (EPID).

To develop and clinically evaluate an automated, objective monthly constancy-testing workflow for Halcyon kV planar imaging using a single service-mode acquisition of a PTW NORMI 4 FLU phantom combined with an external entrance-d...

Unanticipated anatomical and HU changes following CT simulation often necessitate patient resimulation, potentially delaying treatment. This case report describes the use of online CBCT-guided adaptive radiotherapy to manage post...

Radiotherapy has emerged as an effective noninvasive treatment for refractory ventricular tachycardia (VT). Given the high sensitivity of cardiac structures, proton therapy offers potential dosimetric advantages, but its robustne...

To optimize a curve-fitting model for quantitative T1-mapping via inversion recovery (IR) sequences considering varying numbers of data points. For clinical applications, higher resolution and shorter scan times are desired.

To compare two patient-specific quality assurance measurements for trigeminal neuralgia (TN) treatments to ensure that the QA delivery matches the mechanical treatment limitations.

Varian Ethos 2.0 recently introduced High-Fidelity (HF) Mode, featuring a 1.25 mm dose grid designed for small-target SRS/SBRT. While the Intelligent Optimization Engine (IOE) automates plan generation, the impact of user-defined...

Proton dose calculation is sensitive to the metal wires, which are placed on the patient's skin during CT simulation to precisely outline the location of surgical scars and the intended radiation treatment field borders. In order...

Our university’s Medical Physics M.Sc. prepares students for Canadian board certification through written and oral assessments. Despite the additional time and effort involved, oral exams remain part of the curriculum due to thei...

Open-ended survey responses are extremely valuable since participants voluntarily share insights that they feel are necessary to express. The purpose of this study is to accurately reflect members’ perception of the AAPM climate,...

The Intelligent Optimization Engine (IOE) on Varian Ethos has demonstrated efficient Lattice SBRT planning for lung tumors. However, generalizability of IOE performance across diverse anatomical sites and tumor sizes remains unex...

To perform the first comprehensive dosimetric and radiobiological comparison of four modern delivery platforms for stereotactic body radiation therapy (SBRT) in pancreatic cancer: a conventional C-arm linac (TrueBeam), two establ...

To evaluate and compare the incidence of xerostomia (“dry mouth”) in head and neck (H&N) cancer patients treated with intensity-modulated proton therapy (IMPT) and intensity-modulated radiation therapy (IMRT), across unilateral (...

Spatially fractionated radiotherapy (SFRT) focused on the heterogeneous application of the dose to the tumour and effectively used in bulky solid or radioresistant tumours. This work presents the dose distribution received by pat...

This study aimed to generate system-specific Percent Depth Dose (PDD) and Tissue‑Air Ratio (TAR) curves using an acrylic slab phantom and custom 3D‑printed ion‑chamber holders.

In vivo dosimetry is almost exclusively limited to surface or intracavitary sites and is generally unable to measure dose directly in deeper tumors or nearby critical structures. An injectable Fricke gel dosimeter has been develo...

Open-faced thermoplastic masks are widely used for immobilization in stereotactic radiosurgery (SRS) to achieve submillimeter treatment accuracy. This study compared the performance of two commercially available mask designs for...

IEC 61217 is now the reference coordinate standard for modern linear accelerators, yet many multi-linac departments continue to operate legacy IEC 60601 systems. Converting an active clinic between coordinate standards is non-tri...

Dose Driven Continous Scanning proton therapy offers reduced beam delivery time compared to discrete spot scanning but requires accurate characterization of temporal beam parameters for precise dose calculation. This study quanti...

The purpose of this study was to explore the difference between the two plans of intensity modulated radiotherapy (IMRT) for head and neck tumors, which did not limit the dose of pharyngeal constrictor and protected the pharyngea...

At BC Cancer-Victoria, existing pathways for patients requiring rapid, same-day RT are limited to simple field-based planning. Patients who would benefit from more conformal techniques or who require consideration of prior treatm...