Using Scattered X-Rays to Improve the Estimation Accuracy of Attenuation Coefficients: A Fundamental Analysis. - Naohiro Toda; Tetsuya Nakagami; Yoichi Yamazaki; Hiroki Yoshioka; Shuji Koyama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)