Cedars-Sinai Medical Center

To enhance image quality for image-guided radiotherapy (IGRT) by determining the most optimal combination of filter and noise suppression level used in iterative reconstruction of cone beam CT data (iCBCT) acquired with a new imaging panel on a C-arm linac.

Although radiographic exposures are individually low dose, in 2016 there were 275 million in the U.S.; the broad population makes consistent dose and image quality important. A large institution faces significant challenges to achieving this: vast data collec...

Accurate deformable image registration (DIR) between magnetic resonance imaging (MRI) and computed tomography (CT) remains a significant challenge in gynecologic brachytherapy, particularly between images acquired with and without a brachytherapy applicator i...

The Russian invasion of Ukraine has significantly disrupted radiation therapy (RT) services, highlighting the urgent need to replace Cobalt-60 machines and modernize infrastructure and training across 43 RT centers. In response, Help Ukraine Group (HUG) and R...

To systematically evaluate CT number accuracy on virtual monoenergetic images (VMIs) generated by a clinical photon-counting CT (PCCT) system using projection-domain multi-material modeling with a water/iodine basis.

Iterative and deep learning image reconstruction (IR and DLIR) are valuable for reducing dose in modern CT but have the effect of reducing lesion edge sharpness. If sharpness loss becomes contrast dependent at some threshold, the decrease in sharpness may exc...

We implemented a hand-crafted radiomics model and evaluated it against a foundational model, Med3D, a popular transfer network model pretrained on a large-scale medical imaging dataset, for prediction of radiation-associated esophagitis in patients with local...

Opportunistic coronary artery calcium (CAC) assessment from lung cancer screening (LCS) CT can broaden cardiovascular risk stratification, but cardiac motion and acquisition settings may impact the calcium score. This study quantifies the impact of helical pi...

To utilize data from a dose tracking software to retrospectively track repeat rates for frequently used CT exams

To evaluate the relationship between fat volume fraction (FVF) and Hounsfield units (HU) in unenhanced fatty lesions and to identify virtual monochromatic imaging (VMI) settings that minimize FVF quantification errors, by comparing photon-counting CT (PCCT) w...

To study the accuracy and reproducibility of liver lesion volume measurements using fully automated lesion segmentation at virtual monochromatic imaging (VMI) with photon-counting and dual energy CT (PCCT and DECT).

Surface Guided Radiation Therapy (SGRT) systems are increasingly used for patient positioning and motion management in radiotherapy. However, their performance may be influenced by variations in patient skin tone, as differences in optical absorption and refl...

To create user-friendly, size and heart condition-specific protocols to improve coronary CT angiography (CCTA) image quality, reduce dose, and expand eligibility to patients with contraindications due to heart activity.

Clinical evidence generally suggests proton therapy can reduce treatment-related toxicity, especially in tumors near critical structures such as the brain, spinal cord, heart. This benefit is well established in pediatric cancers, where reducing radiation exp...

While mentorship programs by AAPM and other institutions are increasing, there remains a strong need to raise awareness and provide resources for students and early-career physicists to explore diverse and rewarding career opportunities. This session aims to...

As precision oncology evolves, the goal is for RPT to be viewed as a bridge between nuclear medicine, radiation oncology and medical oncology for the benefit of patients with cancer. However, challenges remain related to items, such as “turf wars” between dep...