Eric Diffenderfer, Ph.D.

Medical Physicist, Associate Professor, Penn Radiation Oncology, #firstgen

[Eric Diffenderfer, Ph.D. @esdiffenderfer]

@drdavidpalma @PBlanchardMD @SJFrankMD @EmmaHall71 A verification scan was required at week 3 in the TORPEDO trial, whereas it seems to be optional for the MDACC trial. I don't see any replanning statistics reported for either.

[Eric Diffenderfer, Ph.D. @esdiffenderfer]

@ProtonStorey They are reporting a relative risk increase with as low as 1-5 mGy exposure. This seems hard to distinguish when background radiation exposure varies across the country from just over 1 to almost 10 mSv/year.

[Eric Diffenderfer, Ph.D. @esdiffenderfer]

Here we demonstrate and verify the use of machine log files and Monte Carlo simulation for accurate 3D calculations of the delivered Bragg peak dose and dose rate distribution for proton FLASH. @OliaeiAzar @michelemkim @ibaworldwide @PennRadOnc

https://t.co/Z08ft6D22y

[Penn Medicine CSO @PennMedCSO]

ft. H. Ni, W. Zou, N. Akhtar, @ritamapaul, M. Huang, D. Zhang, H. Zheng, R. Zhang, R. Ma, G. Ngo, @esdiffenderfer, S. Motlagh, @michelemkim, @andyjminn, J. Dorsey, J. Metz, C. Koumenis, Y. Gong, Y. Fan, L. Zhang & @FosterJb @PennRadOnc https://t.co/WOaHZDoAX6

[Henning Willers, MD, FASTRO @HenningWillers]

1/2

It is not too early to start thinking about the #RadRes2025 Meeting in beautiful #PuertoRico Sept 21-24, 2025 🌞🌴🍹🏖️

Abstract & Submission opens in 2⃣ weeks‼️

The Program is shaping up to be FANTASTIC (prelim program link below ⬇️)🔥🔥🔥

[Penn Medicine CSO @PennMedCSO]

ft. Uri Amit, @YVerginadis, @michelemkim, S. Azar Oliaei Motlagh, @esdiffenderfer, @SandraBicher, E. Ben-Josef, @Costas_Koumenis (@PennRadOnc), @UgiUslu, @SebastianAtoche, R. Young, @CarlHJune (@PennPathLabMed) & C. Assenmacher (@PennVet) @PennMedPhys https://t.co/HmAt4rhI4l

[Eric Diffenderfer, Ph.D. @esdiffenderfer]

@medphysdave This paper shows that recursively training on LLM generated data leads to model ‘collapse’.
https://t.co/JCcxvu7FuG

[Loftwah @loftwah]

My development cycle.

[Shannon O'Reilly @_DrOReilly_]

📢 Thrilled to announce we will be starting our global #medphys training program in Ghana this summer through funding from @PennGlobal! Thanks to an amazing collaborative team, students will spend 5 weeks training in Accra and Kumasi. @DrS_Avery @UPennCGH @haspee1 @bcighana

[Swati Girdhani @girdhani_swati]

FLASH Radiotherapy: What Can FLASH's Ultra High Dose Rate Offer to the Treatment of Patients With Sarcoma? - ScienceDirect ⁦@esdiffenderfer⁩ ⁦@michelemkim⁩ ⁦@costas_koumenis⁩ https://t.co/lSo21kORU4

[Shannon O'Reilly @_DrOReilly_]

So incredibly proud of our #medphys students achievements and can’t wait to see what they all accomplish in the future! #medphysmatch

[Penn Medical Physics Residency @PennMedPhys]

It’s #MedphysMatch Day! ✨ We are so excited to work with our next class of residents. It’s such a privilege to have these talented and amazing people join our Penn RadOnc family — welcome aboard! 🤗

[Martha Matuszak @MatuszakMM]

We are so excited to welcome two fantastic medical physicists to our residency program! @UMichRadOnc #medphysmatch

[Eric Diffenderfer, Ph.D. @esdiffenderfer]

@tunguz Sun eggs.

[BBCB Graduate Group @BMBGGUPENN]

Congratulations to Crystal Conn on being the recipient of the 2024 Michael P. Nusbaum Graduate Student Mentoring Award! We honor your dedication to being a role model for training advocacy, inclusivity, and mentoring students to reach their scholarly potential. 🥳

[ASTRO @ASTRO_org]

FLASH proton radiotherapy mitigates radiation-induced heart disease. Read this new #RedJournal article from @YVerginadis et. al. #radonc https://t.co/U3XgcyU8Kz

[Bonnie Ky, MD, MSCE, FACC @DrBonnieKy]

🚨Hott off the press in @ASTRO_org Red Journal📕 from Dr. Ioannis Verginadis & team!
📰https://t.co/hysFF2nqfd
This study demonstrates the sparing effects of FLASH proton RT on cardiac tissue.
#radonc #RIMF #echo

[Yiannis (Ioannis) Verginadis @YVerginadis]

Excited to share our latest paper in @IJROBP : https://t.co/PSWfgyMOKV, highlighting that @Flash proton radiotherapy mitigates radiation-induced heart disease.

[The Drew Weissman Lab @WeissmanLab]

!!!!!!!!