Oregon Health & Science University

To confirm leaded brass as a shielding alternative to Cerrobend for eye shields during total-skin electron (TSE) radiotherapy treatments.

To quantify the accuracy of airway measurement using AirQuant on to-scale airway models.

Diagnostic and Interventional Radiology Physics

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...

Physicians are educated on radiation safety through fluoroscopy credentialing programs and during residency for select medical specialties. However, exposure to radiation, and the need for foundational safety knowledge, begins much earlier in training. The pu...

Therapy Physics

Palliative radiotherapy patients may present emergently and often have recent diagnostic CT (dCT) imaging suitable for treatment planning. Requiring an additional CT simulation can delay treatment and adds burden to patients for whom transport is difficult an...

To report effective half-lives of normal organs and investigate the relationship between kidney effective half-life and creatinine clearance in patients undergoing 177Lu-PSMA-617 therapy at our institution. As single-timepoint dosimetry relies on patient-kine...

Prostate SBRT demands high geometric precision due to large fractional doses and steep dose gradients. Conventional PTV margins are typically derived from population-level estimates and may not reflect individual patient-specific motion. This work introduces...

To quantify changes in the lung volume due to irradiation.

In 2021, helically acquired CTDI was introduced as an alternative measurement methodology to the traditional, axially acquired CTDI, with a later ACR sponsored study published in 2024. Both publications claim that the accuracy of helical CTDI is independent o...

To survey current clinical practice, assess priorities, and identify resource gaps related to environmental sustainability in medical imaging physics.

AAPM TG Report 232 recommends deviation index (DI) action limits of ±1 and ±2 SD based on site radiographic exam data. However, obtaining DI data can be arduous and time-consuming. We propose a solution to efficiently and continuously monitor DI data with pot...

Though digital breast tomosynthesis has been standard of care for over 15 years, the image acquisition parameters, especially the acquisition angles, encompass a wide range of variations. A question that warrants further investigation is the image quality tra...

To compare how T1, T2 and T1ρ relaxation times in patients with increased risk of pancreatic cancer compare to known diseases of the pancreas.

Interventional CT procedures often involve multiple scans of the same anatomy, contributing substantially to patient dose. Because guidance tasks do not require diagnostic‑quality imaging, helical protocol parameters can be reduced to lower exposure, which is...

Despite the widespread use of Lu-177-PSMA for treatment of prostate cancer, the association between renal dose and toxicity remains unclear. This study investigates this relationship.