Stephen F. Kry, PhD

IROC and Radiation Quality Assurance Lab monitor more than 2500 radiotherapy facilities worldwide to ensure accurate and consistent radiotherapy delivery. This study reviews the 30 year history of the anthropomorphic phantom program for advanced photon therap...

To design an anthropomorphic phantom that closely mimics a clinical brain metastases patient to assess the end-to-end performance of multi-lesion SRS treatments.

While adaptive radiotherapy (ART) is increasingly being adopted into clinical practice, treatment planning, delivery, dose reporting, and clinical trial QA have not yet been standardized for national clinical trials, leaving a gap in ensuring consistent and p...

The IROC SRS brain phantom provides independent end-to-end tests for clinical trial credentialing; utilizing this unique dataset characterized by heterogeneous community practices, we aimed to evaluate the utility of machine learning in predicting audit outco...

This work reports the development and initial results from irradiations of IROC’s TBI anthropomorphic phantom.

It is well established that radiation can damage electronic medical devices; however, there is little guidance for managing spinal cord stimulators (SCS) in the radiation oncology setting. Total body irradiation therapy (TBI) presents especial risk to electro...

The Imaging and Radiation Oncology Core (IROC) IMRT head and neck (HN) phantom continues to show unacceptable delivery rates at ~10%. Increased understanding of what drives performance on this audit would assist in targeted improvement of radiotherapy quality...

To evaluate the utility of clinical quality metrics as a means of distinguishing appropriate performance for the IROC Houston stereotactic radiosurgery (SRS) phantom.

To identify and consolidate contemporary dosimetric performance data for Elekta linear accelerators including specialized beams such as flattening-filter free (FFF) beams, which were not included in the original IROC reference dosimetry dataset.

To demonstrate, for the first time in a clinical setting, the accuracy of a novel robust, dose-rate independent and self-consistent calorimeter system to accurately determine absorbed dose to water in UHDR beams from a Mobetron irradiator.

To design and validate a phantom capable of remote temporal and point dose rate assessment for electron and proton FLASH beams, with integrated spatial information to enable full end to end verification.

A clear link has been established between exposure to neutron-producing therapies and cardiac implantable electronic device (CIED) malfunction. However, the risk of neutron-induced CIED malfunction under specific clinical conditions has yet to be elucidated....

Therapy Physics

Clinical practice in radiotherapy medical physics is strengthened through shared experience and peer learning. Although peer-reviewed outputs and educational resources are essential, they are often insufficiently timely, specific, or practical for day-to-day...