Johns Hopkins Univ

Radiopharmaceuticals, Theranostics, and Nuclear Medicine

Photon-counting detector (PCD)–based cone-beam CT (CBCT) is gaining increasing interest for its potential to enable high-resolution and spectrally rich imaging. This study develops a tabletop PCD-CBCT system as a research platform and reports our progress in...

To quantitatively and qualitatively assess CBCT image quality and achievable dose optimization following an upgrade from an aSi1200 to HyperSight imaging panel.

Radiomic feature reproducibility across CT protocols is limited by sensitivity to acquisition and reconstruction parameters. This work investigates whether standard physical image quality (IQ) metrics can quantitatively predict radiomic feature variation, ena...

Accurate characterization of image quality (IQ) enables cohort stratification and optimization of downstream tasks in imaging and image analysis. A recent multi-institutional study curated CT images of an IQ phantom across diverse scanners and sites, capturin...

To update U.S. national adult CT DRLs and ADs using 2025 data and to demonstrate a scalable, acquisition-level, size-normalized framework for generating timely and clinically relevant national benchmarks.

Diagnostic and Interventional Radiology Physics

Imaging phantoms are foundational to building reliable, scalable, and equitable imaging systems. This symposium provides an overview of how contemporary phantoms and phantom-based methods connect benchtop measurements to clinical performance. The following th...