Andrew M. Hernandez, PhD

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...

Diagnostic and Interventional Radiology Physics

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

AAPM Task Group 430 aims to comprehensively evaluate organ and effective dose (ED) estimations from whole body CT data to support recommendations for DLP-to-ED conversions factors and their associated uncertainties. Accurate whole-body organ segmentation is c...

IM/TH- Image Analysis (Single Modality or Multi-Modality)

MRI scanners contribute substantially to healthcare energy use, yet quantitative benchmarks at the exam- and pulse sequence-level are limited. The purpose of this work was to develop an automated framework for MRI energy quantification at the exam and sequenc...

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...

This educational session will review modern and emerging techniques for iodinated contrast administration in CT imaging, including injector technology, efficient dosing strategies, and photon counting CT with a focus on reducing the associated impact on patie...

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...