Ramish Ashraf, PhD


I grew up in Lahore, Pakistan where I did my bachelor’s in electrical engineering and transitioned into a PhD in Medical Physics at the Thayer School of Engineering at Dartmouth College. My PhD work was primarily on beam monitoring and dosimetry for small fields and FLASH radiotherapy. In my free time, I like to watch cricket, soccer, and hike and listen to all kinds of music.


Ashraf M.R., Gibson C, Skinner L, Gu X, Xing L, Wang L. An integrated 3D printed radioluminescent-based phantom for quality assurance on a robotic-arm linac. Phys Med Biol. 2023;68(11):115003. doi:10.1088/1361-6560/acd162

Rahman, M., Kozelka, J., Hildreth, J., Schönfeld, A., Sloop, A.M., Ashraf, M.R., Bruza, P., Gladstone, D.J., Pogue, B.W., Simon, W.E., Zhang, R., n.d. Characterization of a diode dosimeter for UHDR FLASH radiotherapy. Medical Physics 2023https://doi.org/10.1002/mp.16474

No, H.J., Wu, Y. (Fred), Dworkin, M.L., Manjappa, R., Skinner, L., Ashraf, M.R., Lau, B., Melemenidis, S., Viswanathan, V., Yu, A.S.-J., Surucu, M., Schüler, E., Graves, E.E., Maxim, P.G., Loo, B.W., 2023. Clinical LINAC-based electron FLASH: Pathway for practical translation to FLASH clinical trials: LINAC electron FLASH. International Journal of Radiation Oncology, Biology, Physics. https://doi.org/10.1016/j.ijrobp.2023.04.011

Yan, H., De Jean, P., Grafil, E., Ashraf, M.R., Niedermayr, T., Astrahan, M., Mruthyunjaya, P., Beadle, B., Xing, L., Liu, W., 2022. Radio-luminescent imaging for rapid, high resolution eye plaque loading verification. Med Phys. https://doi.org/10.1002/mp.16003

Ha, B., Liang, K., Liu, C., Melemenidis, S., Manjappa, R., Viswanathan, V., Das, N., Ashraf, M.R., Lau, B., Soto, L., Graves, E.E., Rao, J., Loo, B.W., Pratx, G., 2022. Real-time optical oximetry during FLASH radiotherapy using a phosphorescent nanoprobe. Radiotherapy and Oncology. https://doi.org/10.1016/j.radonc.2022.08.011

Ashraf, M.R., Rahman, M., Cao, X., Duval, K., Williams, B.B., Jack Hoopes, P., Gladstone, D.J., Pogue, B.W., Zhang, R., Bruza, P., 2022. Individual pulse monitoring and dose control system for pre-clinical implementation of FLASH-RT. Phys. Med. Biol. 67, 095003. https://doi.org/10.1088/1361-6560/ac5f6f

Ashraf, M.R., Farwell, C., Alexander, D.A., Zhang, R., Gladstone, D.J., Pogue, B.W., Bruza, P., 2022. 3D dose delivery QA using couch and gantry mounted cameras. J. Phys.: Conf. Ser. 2167, 012027. https://doi.org/10.1088/1742-6596/2167/1/012027

Rahman, M., Ashraf, M.R., Gladstone, D.J., Bruza, P., Jarvis, L.A., Schaner, P.E., Cao, X., Pogue, B.W., Hoopes, P.J., Zhang, R., 2021. Treatment Planning System for Electron FLASH Radiotherapy: Open-source for Clinical ImplementationInt J Radiat Oncol Biol Phys S0360-3016(21)03071–6. *https://doi.org/10.1016/j.ijrobp.2021.10.148

Rahman, M., Ashraf, M.R., Zhang, R., Gladstone, D.J., Cao, X., Williams, B.B., Hoopes, P.J., Pogue, B.W., Bruza, P., 2021. Spatial and temporal dosimetry of individual electron FLASH beam pulses using radioluminescence imaging. Phys. Med. Biol. 66, 135009. https://doi.org/10.1088/1361-6560/ac0390

Cao, X., Zhang, R., Esipova, T.V., Allu, S.R., Ashraf, R., Rahman, M., Gunn, J.R., Bruza, P., Gladstone, D.J., Williams, B.B., Swartz, H.M., Hoopes, P.J., Vinogradov, S.A., Pogue, B.W., 2021. Quantification of oxygen depletion during FLASH irradiation in vitro and in vivo. Int J Radiat Oncol Biol Phys. https://doi.org/10.1016/j.ijrobp.2021.03.056

Ashraf, M.R., Rahman, M., Zhang, R., Cao, X., Williams, B.B., Hoopes, P.J., Gladstone, D.J., Pogue, B.W., Bruza, P., 2021. Technical Note: Single-pulse beam characterization for FLASH-RT using optical imaging in a water tank. Medical Physics 48, 2673–2681. https://doi.org/10.1002/mp.14843

Rahman, M*., Ashraf, M.R.*, Zhang, R., Bruza, P., Dexter, C.A., Thompson, L., Cao, X., Williams, B.B., Hoopes, P.J., Pogue, B.W., Gladstone, D.J., 2021. Electron FLASH Delivery at Treatment Room Isocenter for Efficient Reversible Conversion of a Clinical LINAC. International Journal of Radiation Oncology*Biology*Physics 110, 872–882. https://doi.org/10.1016/j.ijrobp.2021.01.011  (* Equal Contribution)

Ashraf, M.R.*, Rahman, M*., Zhang, R., Williams, B.B., Gladstone, D.J., Pogue, B.W., Bruza, P., 2020. Dosimetry for FLASH Radiotherapy: A Review of Tools and the Role of Radioluminescence and Cherenkov Emission. Front. Phys. 8. https://doi.org/10.3389/fphy.2020.00328  (* Equal Contribution)

Ashraf, M.R., Bruza, P., Pogue, B.W., Nelson, N., Williams, B.B., Jarvis, L.A., Gladstone, D.J., 2019. Optical imaging provides rapid verification of static small beams, radiosurgery, and VMAT plans with millimeter resolution. Medical Physics 46, 5227–5237. https://doi.org/10.1002/mp.13797

Ashraf, M.R., Bruza, P., Krishnaswamy, V., Gladstone, D.J., Pogue, B.W., 2019. Technical Note: Time-gating to medical linear accelerator pulses: Stray radiation detector. Medical Physics 46, 1044–1048. https://doi.org/10.1002/mp.13311