Contrast-enhanced spectral mammography based on a photoncounting detector: Quantitative accuracy and radiation dose Seungwan Leea,b*, Sooncheol Kanga, and Jisoo Eomb a Department of Medical Science, Konyang University, Daejeon, South Korea; Department of Radiological Science, College of Medical Science, Konyang University, Daejeon, South Korea a ABSTRACT Contrast-enhanced mammography has been used to demonstrate functional information about a ….. 1. DESCRIPTION OF PURPOSE Contrast-enhanced mammography aims to demonstrate functional information about a breast tumor by injecting ….. 2. METHODS In the contrast-enhanced mammography, the incident X-ray intensity per photon ….. 3. RESULTS Figure 1 shows the X-ray energy spectra for obtaining low- ….. 4. NEW OR BREAKTHROUGH WORK TO BE PRESENTED Although a number of mammographic techniques for detecting breast tumors were introduced by several groups, these ….. 5. CONCLUSIONS This study demonstrates that the contrast-enhanced spectral mammography based on a PCD allows the precise material ….. Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (Grant No. NRF-2016R1C1B1010642). References  F. Diekmann and U. Bick, “Tomosynthesis and contrast-enhanced digital mammography: recent advances in digital mammography”, Eur. J. Radiol. 17, 3086-3092 (2007).  J. M. Lewin, P. K. Isaacs, V. Vance, and F. J. Larke, “Dual-Energy Contrast-enhanced Digital Subtraction Mammography: Feasibility”, Radiology 229, 261-268 (2003). …..