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Dec 05, 2021

On the Ground 3: RSNA 2021 News

- By York Haemisch

Dr York Haemisch, our Director Medical and Research Markets, witnessed building excitement around photon counting at RSNA 2021. In his final report, he shares news from the universities where medical research teams are continuing to discover more benefits of the technology. 

What were we expecting after so long locked down in our continents? Sparsely populated aisles? Visitors reluctant to mingle? In fact, we could never have anticipated the crowds nor the strength of interest in photon counting which was, without doubt, one of the key trends at RSNA 2021.

We met innovators from academia, who presented impressive and interesting ideas for utilising the features of photon counting X-ray detectors to improve imaging, for example in therapy monitoring or intra-operative imaging. Then there were the representatives from various imaging OEMs who are now looking for ways to access the feasibility of our photon counting technology for their applications; they left our stand with a multitude of options that we can offer.

It was difficult to get time away, but I made sure to attend a session on cone beam CT that was enriched by contributions from our collaborators at University of Wisconsin and University of Colorado. Dr. Kevin Joseph Treb from the University of Wisconsin presented some very interesting work on the “Correction Of Spectral Inconsistency-induced Image Artifacts In C-arm Photon Counting CT” using a DC detector and a pixelwise spectral correction method to remove beam hardening and concentric artifacts very successfully. Professor Ke Li, from the same institution, talked to us about “Improving Intra-operative Visualisation Of Arterial Branching Pattern Using A High Spatial Resolution C-arm Photon Counting Detector CT System” utilising the aforementioned correction methods to obtain very impressive images of very small brain blood vessels, and enabling new diagnostic assessments in brain radiology.

I am returning home with a large pile of proposals and a list of contacts to process. This was a unique RSNA, coming at the end of a difficult time for us all, but setting the tone for a bright future in which the photon counting technology we, at Direct Conversion, pioneered, looks ready to transform medical imaging.