Headshot portrait of Guillem Pratx - Bio-X Bowes Fellow
Bio-X Graduate Student Fellow

Awarded in 2006
Home Department: Electrical Engineering
Faculty Advisor: Craig Levin (Radiology)

Research Title: Image reconstruction in high-resolution PET: GPU-accelerated strategies for improving image quality and accuracy

Research Description: Positron emission tomography (PET) is a medical imaging modality that has the powerful capability to non-invasively interrogate cellular and molecular processes occurring deep within the tissue of living subjects; however, advanced image reconstruction methods require more computation than is available in a typical clinical setting. Hence, the goal of Guillem’s work was to accelerate the reconstruction by an order-of-magnitude by using off-the-shelf graphics processing units (GPUs) as cost-effective high performance co-processors. This technology will enable the use of advanced reconstruction methods that improve the accuracy of the scans, resulting in more reliable diagnosis.


Guillem is an associate professor in radiation oncology at Stanford University. His research focus is on biomedical imaging for radiotherapy.