A Robust No-Reference Quality Assessment Method for PET Imaging Based on Dynamic Thresholding, Poisson-Aware Noise Modeling, and Multi-Dimensional Block-Level Feature Fusion
No-reference positron emission tomography (PET) image quality assessment remains challenging due to Poisson-distributed noise, strong foreground–background contrast, and scan-parameter–dependent signal variations. This study aims to develop a PET-specific, ad...
Poster Program · Radiopharmaceuticals, Theranostics, and Nuclear Medicine
A Rule-Based Multileaf Collimator Algorithm for Dynamic Target Radiotherapy: An Optimized Dmlc Leaf Sequencing Approach
Accurate and efficient dose delivery is crucial in dynamic multileaf collimator (MLC) radiotherapy to minimize treatment time and reduce delivery errors. Current leaf-sequencing algorithms often face challenges in balancing delivery speed with dose accuracy,...
Poster Program · Therapy Physics
Depth- and Size-Dependent Correction of Tumor Conductivity In Phase-Based MR Electrical Properties Tomography
The quantitative accuracy of MR Electrical Properties Tomography (MR-EPT) is strongly influenced by tissue heterogeneity and lesion geometry. This study systematically investigates the effects of tumor depth and tumor size on conductivity reconstruction error...
Poster Program · Diagnostic and Interventional Radiology Physics
From Imaging to Therapy: A Simulation-Based Radiobiological and Dosimetric Feasibility Study of Kilovoltage X-Ray VMAT for Skin Field Treatment
To investigate the dosimetric and radiobiological advantages of repurposing a standard kilovoltage (kV) X-ray source for the treatment of nonmelanoma skin cancer. This study assessed the kV X-ray beam character and plan quality indices compared with other rad...
Poster Program · Therapy Physics
Modeling Cell Survival In Ion Beam Flash Irradiation through DNA Damage Distribution In 3D Genome
Ion beam radiotherapy (helium and carbon) has opened new frontiers for FLASH research by introducing LET as a critical physical parameter for mechanistic investigation. However, current FLASH effect models are restricted to low-LET irradiation, and high-LET a...
Poster Program · Therapy Physics
Electrical Conductivity Imaging Is Sensitive to Tumor Aggressiveness and Glycolytic Metabolism In Glioma Cell Models
To evaluate whether MR-based electrical conductivity imaging can distinguish glioma phenotypes with varying aggressiveness and to investigate the metabolic origins of conductivity differences in glioma cell models.
Proffered Program · Diagnostic and Interventional Radiology Physics
Mitigating Boundary Artifacts In 5T MRI Electrical Properties Tomography Via Condition-Number-Guided Adaptive Differentiation and Spatially Varying PDE Constraints
To address severe boundary artifacts in Electrical Properties Tomography (EPT) reconstruction caused by noise amplification and erroneous numerical differentiation across tissue discontinuities. A unified, boundary-aware reconstruction framework is proposed,...
Proffered Program · Diagnostic and Interventional Radiology Physics