Reaching New Heights in Nuclear Medicine

2026 Hal O’Brien Rising Star Award Winners

On behalf of the Hal O’Brien Rising Star Award Committee and the High Country Nuclear Medicine Organizing Committee, it is our pleasure to announce the winners of this competition.

  • Aisling Chaney, PhD (Washington University in St Louis) – Nominated by Stanford University Medical Center
  • Stephen Graves, PhD, DABR (RT) (NM) (University of Iowa) – Nominated by the University of California, San Francisco

We congratulate these outstanding Rising Stars and appreciate their efforts and the efforts of their nominating organizations in helping us identify the future leaders in our field.

Photos below in order of above list.


Aisling Chaney, PhD,Washington University in St Louis

Stephen Graves, PhD, DABR (RT) (NM), University of Iowa