Cleveland Clinic

To investigate whether unedited organs at risk (OARs) automatically segmented by Artificial Intelligence-based algorithms can be used by inverse optimizer to generate plans for lung SBRT cases such that the plans are still clinically acceptable after the cont...

To validate a planning-quality HyperSight iCBCT protocol on a C-arm LINAC for head and neck (HN) offline adaptive planning. By enabling direct use of high-quality CBCTs for re-planning, this approach aims to streamline the offline adaptive workflow.

To establish baseline Electronic Portal Imaging Device (EPID) data for validating dosimetric equivalence across a fleet of Varian TrueBeam linear accelerators. The primary objective was to reduce the inter-user and setup variability associated with standard w...

A system matrix (SM) was designed to incorporate the distance dependent blurring in MLEM reconstruction for SPECT.

To quantify the usage of different electron beam treatments and use that data to develop recommendations for maximizing efficiency in electron output factor measurements.

To measure the fetal dose delivered to pregnant lung cancer patients using AP/PA fields with different beam divergences for consideration of phantom scatter and different distances from the Linac head for evaluation of head leakage.

Metastatic reactivation—the transition of dormant cancer cells into active, proliferative lesions—drives late cancer recurrence in many survivors. In breast cancer, up to 30% of patients develop distant metastases 5–25 years after achieving a disease-free sta...

Rectal spacers are widely used in prostate stereotactic ablative radiotherapy (SAbR) to reduce rectal dose; however, their value as a practical, planning-oriented QA tool remains underdefined. Using real-world clinical trial data, this study evaluates whether...

In 2020, AAPM issued a position statement recommending against the routine use of gonadal and fetal shielding during medical imaging exams. Since then many national and international organizations have issued similar guidance. In 2025, NCRP will publish a com...

As healthcare systems place increasing emphasis on environmental sustainability, diagnostic imaging modalities – particularly CT and MRI scanners – represent a significant opportunity for reducing energy consumption. However, the terminology and implementatio...

This session will feature 3-5 presentations from ACR member-volunteers who lead ACR committees or programs. At present, the following initiatives are likely to be useful as presentations to the audience at AAPM 2026. The ACR continues to develop a pathway in...

Artificial intelligence (AI) is transforming breast imaging by enhancing detection accuracy, improving workflow efficiency, and aiding in clinical decision support. Computer-aided detection (CAD) systems for mammography have been available since the late 1990...

To evaluate the efficacy of dynamic lattice structures in Gamma Kinfe (GK) Spatially Fractionated Radiation Therapy (SFRT) and compare their performance against traditional static lattice designs. Plans were assessed using Equivalent Uniform Dose (EUD), Valle...

To evaluate the doses to the bone marrow and kidneys from Lu-177 radiopharmaceutical therapy (RPT), as affected by radiopharmaceutical type, cycle of administration, and tumor volume.

To develop a streamlined and automated quantum-inspired optimization framework using mixed-integer quadratic programming (MIQP).

To evaluate the biological effect of Spatially Fractionated Radiation Therapy (SFRT) using Gamma Knife (GK) or volumetric-modulated arc therapy (VMAT) with multiple sphere sizes in a lattice arrangement.

To evaluate the reproducibility of a PET/CT QA test for assessing spatial resolution and image registration.

To develop a cost-effective, open-source system for patient-specific voluntary breath-hold (VBH) during CT simulation. The goal is to provide accurate gating thresholds for LINAC systems, such as Varian Truebeam Real-time Position Management (RPM) and auto-be...

Kilovoltage cone-beam CT (kV-CBCT) is routinely used for image-guided radiotherapy (IGRT). However, image artifacts and limited Hounsfield unit (HU) stability strict its application in adaptive radiotherapy. Recently, HyperSight CBCT was introduced to C-arm l...

Monte Carlo simulations are widely used to derive effective dose conversion factors (k-factors) for CT; however, acquisition parameters such as helical pitch and tube starting angle are often randomly selected. The impact of these parameters on the variabilit...

Tin filtration has shown improved dose efficiencies in conventional CT for renal stone imaging. Photon-counting CT (PCCT) enables virtual monoenergetic image (VMI) reconstructions that can enhance stone conspicuity. This study evaluates potential dose-efficie...

High-pitch dual-source acquisition (“FLASH”) with tin spectral filtration has substantially reduced radiation dose while minimizing patient motion, both of which are particularly important for pediatric imaging. However, in adults, tin-filtered spectra have b...

Diagnostic medical physicists are often tasked with estimating effective dose (ED) for patient imaging procedures. As chest radiography is frequently performed in children, it is useful to know the general magnitudes of ED for various pediatric ages. The purp...

To assess the feasibility of distributing the workload of manufacturing 3-dimensional (3D) printed Winston-Lutz (W-L) phantoms for donation purposes across multiple locations and a variety of printers

To report our experience of using key performance indices (KPIs) of time-to-treatment initiation (TTI) and on-time chart readiness to improve patient access, quality, and safety of external beam radiotherapy

As artificial intelligence rapidly transforms how software and tools are developed, medical physicists are increasingly exploring AI-assisted programming -- using models such as ChatGPT (and Codex) and Claude -- to accelerate problem solving and prototyping i...

Inequitable access to advanced radiotherapy technologies creates gaps in residency education and limits training experiences. The AAPM Penn–Ohio–West Virginia (POWV) Chapter developed a structured Inter-Residency Exchange Program (IREP) to expand resident exp...

The ACR Fluoroscopy Dose Index Registry (DIR-FL) collected dose indices for diagnostic fluoroscopy procedures as part of a pilot program to expand the registry beyond interventional procedures. The data serve as the first insights by the DIR-FL into dosimetri...

Cardiac MRI is a unique diagnostic modality that is often given limited focus in medical physics educational and training programs, despite its ubiquity in clinical practice. The physics and clinical challenges inherent to cardiac MRI are a worthwhile subject...

Differentiating radiation necrosis from tumor recurrence after stereotactic radiosurgery (SRS) remains a major challenge in neuro-oncology, as conventional MRI often fails to reliably distinguish these tissue types. Magnetic Resonance Fingerprinting (MRF) is...

IM- Breast X-Ray Imaging

Artificial Intelligence (AI) in ultrasound transforms medical diagnosis by using computer algorithms to analyze ultrasound images for pathologies and identify biomarkers. AI enhances ultrasound image quality, automates tasks like tumor tracing, aids in diagno...

IM- Breast X-Ray Imaging

IM- Breast X-Ray Imaging

Supporting MR protocol design, optimization, and management is an important role for a diagnostic medical physicist. However, unless a physicist has extensive MR training, these tasks can feel overwhelming due to the breadth and variety of MR protocol types,...

This session provides a practical framework for optimizing radiography through physics, quality control, and clinical integration. Topics include the physics of technique selection (kVp/mAs, attenuation, filtration, grids, geometry, and detector metrics), ret...

Artificial intelligence (AI) is rapidly reshaping diagnostic imaging, with pediatric applications standing out as both uniquely challenging and uniquely impactful. Pediatric imaging is not simply a scaled-down version of adult imaging. For example, pediatric...

To develop an automated tool for tumor segmentation, identification, dosimetry, and response assessment for radiopharmaceutical therapy (RPT).

With the Joint Commission’s (TJC) establishment of fluoroscopy-specific standards (effective January 1, 2019), typical exposure rates and low-contrast performance became required performance evaluations during annual surveys for all accredited institutions. T...

Diagnostic and Interventional Radiology Physics

This study aims to establish a preliminary screening workflow to identify potential sources of environmental EMI prior to installation of mammography equipment utilizing newer generation Analogic detectors (LMAM2,LMAM3).