Abstract
The Tomosynthesis Mammography Imaging Screening Trial (TMIST) Lead-In Study is a randomized screening trial that aims to compare the performance of standard two-dimensional full-field digital mammography (FFDM) and tomosynthesis at five sites in Canada, with multiple vendors’ platforms and a target enrollment of 6300 women. To characterize and monitor the image quality of the tomosynthesis systems in the trial, a quality control (QC) program has been developed, including semi-annual physics tests, and daily tests performed on a phantom imaged by the radiographer.
Here we describe the test regimen and phantoms and present initial results. The physics tests include measurement of image quality parameters in the reconstructed tomographic slices and evaluation of the AEC performance by measuring signal difference to noise ratio (SDNR) of a low contrast simulated lesion. The physics tests have been performed on a GE Senoclaire, two Hologic Selenia Dimensions and two Siemens Mammomat Inspiration units. In addition to the physics tests, we have remotely collected 15 months of daily QC data on the GE unit and 2 and 3 months on the Hologic units.
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Acknowledgements
The authors wish to thank Moira Pearson and Joseph Yang for their assistance with this project and the Canadian Breast Cancer Foundation for funding through the 2012 Earlier Detection of Breast Cancer grant.
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© 2016 Springer International Publishing Switzerland
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Maki, A., Mainprize, J., Mawdsley, G., Yaffe, M. (2016). Quality Control of Breast Tomosynthesis for a Screening Trial: Preliminary Experience. In: Tingberg, A., Lång, K., Timberg, P. (eds) Breast Imaging. IWDM 2016. Lecture Notes in Computer Science(), vol 9699. Springer, Cham. https://doi.org/10.1007/978-3-319-41546-8_2
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DOI: https://doi.org/10.1007/978-3-319-41546-8_2
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