X-ray free-electron laser induced acoustic microscopy (XFELAM).

"Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: C. Kim and S. Cho have financial interests in OPTICHO, which, however, did not support this work."

"This work was supported in part by a grant from the 10.13039/501100001321National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT (Grant Nos. 2023R1A2C3004880, 2021M3C1C3097624); a grant from the Korea Medical Device Development Fund, funded by the 10.13039/501100003052Ministry of Trade, Industry and Energy (Grant Nos. 9991007019, KMDF_PR_20200901_0008); a grant from the Basic Science Research Program, through the NRF, funded by the 10.13039/100009950Ministry of Education (Grant No. 2020R1A6A1A03047902, 2022R1A6A1A03052954); a grant from the Institute of Information & Communications Technology Planning & Evaluation (IITP), funded by the Korea government (MSIT) [Grant No. 2019-0-01906, Artificial Intelligence Graduate School Program (POSTECH)]; a grant from the 10.13039/501100003662Korea Evaluation Institute of Industrial Technology (KEIT), funded by the Korea government (MOTIE); and by the BK21 FOUR (Fostering Outstanding Universities for Research) project."