Advancing the Science

Mayo Clinic Medical Science Blog

Oct 8, 2014 · 1 Reply

Photon counting CT Scanner makes research debut

By Bob Nellis @bobnellis

Dr. Cynthia McCollough of Mayo Clinic and Dr. Thomas Flohr of Siemens.

The arrival of a new CT scanner at Mayo Clinic is not usually worthy of a ribbon cutting ceremony, but this isn't your ordinary scanner. Destined solely for research, the first photon-counting-detector-based spectral CT  to be put into service anywhere was recently delivered to Mayo's Radiology Research Division. Obtained through a grant from the National Institutes of Health, the machine provides spatial resolution and material discrimination sensitivity at much lower radiation doses than conventional scanners. Reducing radiation exposure wherever possible has been a major objective for Cynthia McCollough, Ph.D. (sharing the scissors duty here). While the photo counting scanner will not be used for patients, it will allow researchers to study the pathological mechanisms of vascular wall failure, which, in turn could significantly impact early diagnosis and treatment of myocardial  infarctions. Because of the high resolution capabilities, due in part to almost negligible electronic background noise, the exposure time needed is minimal for medically accurate images. Over the next five years, the researchers will be studying scanning techniques and determining the accuracy and specificity of full body scans with a focus on atherosclerotic plaque formation.  The goal is to  non-invasively detect atherosclerosis in its earliest stages, before symptomatic consequences occur, as well as to optimize spectral CT for ultimate clinical use. Dr. Erik Ritman of Mayo is co-lead investigator on the study and brings decades of experience to the project, having been involved in the earliest days of CT imaging at Mayo.

Tags: atherosclerosis, imaging, Mayo Clinic research, Radiology, Radiology Research, Siemens


Posted by @yamakawa, Apr 2, 2015

I'm photon counting radiation detection pioneer. I already developed photon couning dental panoramic system. I know how difficult it is. But I realize it.
I can easily imagine CT imaging by use CdTe or CZT is 100 times more difficult than dental panoramic system. So I'm very curious to your research because your organization is very respectful.
If you can comment some results, please inform me.


Please login or become a member to post a comment.

Contact Us · Privacy Policy