Welcome to the Center for Advanced Photon Processing

A Proposed NIH P41 Center for Technology Development, Collaborative Biomedical Research, Service for the Broader Scientific Community, Dissemination, and Training


Welcome to CAPP


The University of Arizona (UA) has been the internationally-recognized leader in the image science field for more than two decades.  The Center for Advanced Photon Processing (CAPP) builds on this unique legacy of combining rigorous theory, state-of-the-art computational tools, advanced detectors and electronics, innovative imaging systems, and novel contrast agents with cutting-edge clinical and preclinical applications.  Modalities of interest include single-photon emission computed tomography (SPECT), positron emission tomography (PET), x-ray computed tomography (CT), optical and fluorescence imaging, as well as novel acoustic techniques such as thermoacoustic and acoustoelectric imaging. 

Please explore the various pages to learn more about CAPP activities.

In CAPP, we develop new imaging systems for a variety of modalities that incorporate a concept we have pioneered called photon processing.  With photon processing, all attributes of individual photons, particles, or other detected signals are determined by maximum-likelihood estimators and used in reconstruction and data analysis.  Photon processing represents a significant leap in terms of overall task performance beyond photon counting and other data processing methods where data are binned. CAPP makes new contributions at the cutting edge of emission tomography, detectors, x-ray CT technology, in vivo optical imaging, and novel acoustic systems. 

The goals of CAPP are to:

  1. Extend the theory and practice of image science and image-quality assessment into new realms of biomedical imaging.
  2. Advance the state of the art in the development and analysis of photon-processing detectors.
  3. Address and reduce the variability that plagues small-animal imaging studies to improve the reproducibility and robustness of results obtained in our collaborative and service programs as well as in the biomedical imaging community as a whole.
  4. Develop novel imaging systems that address scientific and medical problems that cannot be solved with commercial products.
  5. Develop novel and useful polyscopic imaging approaches that utilize information from complementary modalities to address biomedical questions that involve multiple concurrent physiological processes.
  6. With our collaborators, translate these technological advances to clinical research and practice.

Areas to Explore




Contact Information

For more information about the center, or to report problems with the website, please contact CAPP through Liz Hague.  

CAPP is housed at the University of Arizona's Bioscience Research Laboratories Building.  Our address is:

Lars Furenlid
The Center for Advanced Photon Processing
1230 N Cherry Ave
Tucson, AZ 85721