N. Koshikawa, A. Omata, M. Masubuchi, J. Kataoka, Y. Kadonaga, K. Tokoi, S. Nakagawa, A. Imada, A. Toyoshima, K. Matsunaga, et al. Activation imaging: New concept of visualizing drug distribution with wide-band X-ray and gamma-ray imager. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2023. 1045. 167599