photon-counting

Posts Tagged ‘photon-counting’

National studies reveal major difference in mammography dose levels

June 23rd, 2011

Studies from the Norwegian and Swedish national screening programs show that there are major differences in dose levels among their digital systems. In the studies, dose data from the most commonly used full-field digital mammography systems (FFDM) are compared. The Norwegian study demonstrates that Sectra MicroDose Mammography with its photon-counting scanning-slit technology operates at 53% of …

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Research report: Sectra reveals initial clinical results of color mammography

March 3rd, 2011

The first clinical results from a research project focused on spectral (color) mammography shows promising diagnostic benefits for breast cancer. Published in the February issue of Radiology, the results will be presented at a symposium dedicated to breast cancer detection and ways of improving cancer detection with photon counting technology, …

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White paper: Average glandular dose, Sectra MicroDose Mammography

October 20th, 2010

The benefit of mammography screening can be considered established for women aged 50-69 years, and recommendations vary with regard to screening women in their 40’s. Minimizing radiation risk is important in general as manifested by the ALARA (as low as reasonably achievable) principle. Furthermore, radiation is a factor in the benefit–risk ratio …

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How we can improve cancer detection in mammography

March 24th, 2010

At ECR, four experts shared their views on the challenges of early cancer detection. The recorded version of this very interesting and well attended symposium is now available for you to watch and share with your colleagues.
Why do we miss cancers in mammography: What the DMIST trial tells us
Martin Yaffe, Professor, Toronto, Canada…

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Major interest in the latest breast cancer research developments

March 7th, 2010

The mammography symposium held at ECR on March 6 attracted a large and highly qualified audience, all interested in how to improve cancer detection in mammography.
Photos of the speakers:

Photos from the event:

Link …

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Can we improve cancer detection in mammography?

March 1st, 2010

Digitization of the imaging procedure was a great leap forward, particularly in terms of workflow and dose efficiency. Although screening programs are proven to decrease breast cancer mortality by up to 45%, we still miss 30% of cancers. Also, high recall rates are a frequent source of debate. In short, there is still room for …

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Nobel Prize laureate George E. Smith visited Sectra to learn about photon-counting mammography

December 15th, 2009

While in Stockholm to receive the Nobel Prize in Physics, George E. Smith took the opportunity to visit Sectra to discuss photon-counting and its use in the latest advances in the future of medical imaging. In the photo below, he is seen viewing Sectra MicroDose Mammography – the only system in the market that uses …

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RSNA: Dose reduction discussed in several sessions and research papers

December 2nd, 2009

Photon counting has gained significant momentum in x-ray imaging the last years. It continues to be a hot subject at this year’s RSNA as well, with discussions about how photon-counting can be used in different modalities.
 “30 years from now all x-ray detectors for medical imaging will be photon counting. Why use any-thing else than the …

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RSNA: Magnus Åslund, PhD, presented “Evaluation of Photon Counting Spectral Breast Imaging Performance”

November 30th, 2009

A photon-counting spectral detector based on the scanning multislit geometry from Sectra has been developed within the EU-funded Highrex project. It is used in clinical trials to evaluate photon counting tomosynthesis; spectral tomosynthesis; and contrast-enhanced spectral tomosynthesis. A theoretical model of the detector’s spectral performance has been developed and is used to predict the system …

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Mammography shifts toward spectral imaging

X–ray imaging has provided important diagnostic information for clinical applications for almost a century. It is well known that variations in x-ray attenuation create different grayscale levels that reveal detailed structural information with high spatial resolution. This remains true so long as the object components have differing x-ray absorption properties. X-rays have a spectrum of …

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