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American College of Cardiology/ European Society of Cardiology international study of angiographic data compression phase II

The effects of varying JPEG data compression levels on the quantitative assessment of the degree of stenosis in digital coronary angiography

Joan C. Tuinenburg, MSc^*, Gerhard Koning, MSc^*, Ellen Hekking, Aeilko H. Zwinderman, PhD, Tim Becker, MSc, R.üdiger Simon, MD, FACC and Johan H. C. Reiber, PhD^*

^* Division of Image Processing (LKEB), Department of Radiology, LUMC, Leiden, The Netherlands
Heart Core BV, Leiden, The Netherlands
Department of Medical Statistics, LUMC, Leiden, The Netherlands
Medical Clinic, Department of Cardiology, Christian-Albrechts University, Kiel, Germany

View larger version (82K): [in a new window]   Figure 1 The three series of comparisons performed in this study.

View larger version (16K): [in a new window]   Figure 2 Schematic view of the three series of comparisons performed in this study. a) The fixed inter-compression analysis and the intra-observer analysis, b) the variable inter-compression analysis.