Greg Zaharchuk (@GregZ_MD) header
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Neuroradiologist, scientist, teacher, and learner interested in improving the health of patients using advanced imaging and AI

Stanford, CA
Joined February 2018
Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)Photo by Greg Zaharchuk (@GregZ_MD)
President-elect #ASFNR26 @VinceKumarMD handing over the recognition plaques to outgoing President @CoolAsANeuroRad and Past President @jodytanabe to honor their leadership, dedication, and service to @theASFNR
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Standardizing the names of MRI and CT sequences is an important step to improve quality and efficiency. Next up, standardizing how vendors organize individual series! rsna.org/news/2026/september…
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For the second year running, Subtle Medical has been named one of the World's Top HealthTech Companies by TIME and Statista (every year the list has existed)! Thank you to the providers, partners, and patients who make this work matter.
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We put together 5 ways imaging centers can increase MRI capacity without adding a scanner, starting with one of the most direct: reducing acquisition time with deep learning reconstruction. Read the full article to explore the 5️⃣ approaches: na2.hubs.ly/H07sbTJ0
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We’re thrilled to welcome Lawrence N. Tanenbaum, MD, FACR as Executive Medical Director at Subtle Medical! 🥳
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We're proud to share that Subtle Medical earned 🥈 2nd Place in Medical Imaging at the 2026 #Nebius AI Discovery Awards in London 🏆 The awards recognize startups using #AI to advance #healthcare and life sciences. This year, 647 companies competed for recognition. #radiology
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Please join us in welcoming Rudy Grant to Subtle Medical! 🎉 Rudy joins us as VP of Operations, and look forward to the experience and leadership he brings to the team. Welcome, Rudy! 👏🏻
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We're excited to welcome Indra Lalari to Subtle Medical! 🎊 Indra joins us as the VP of Product, where she will help strengthen the connection between product innovation and customer needs. Welcome, Indra! 🥳
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Congratulations to our talented neuroradiology educators Drs. William Ji and Nancy Fischbein for receiving fellow and faculty teaching awards respectively from our @StanfordRad residents!
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🥳Congratulations to our neuroradiology fellowship graduates! 🥳 You are all such kind and thoughtful physicians and we are grateful to be a part of your training journey. We’re excited to see what you’ll do next!
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We’re excited to tune in for another year of fantastic @TheASNR webinars moderated by ASNR Education Committee chair and neurorad extraordinaire @NancyPhamMD!
Don't miss our next free #ASNR webinar! Join us Wednesday, June 17, at 4:00 pm ET for Education Advances: Anatomy and Pathology of the Skull Base. Get complete complete details and register now: ow.ly/KaoT50Z8QxW
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Hearty congratulations to our superstar neuroradiologist and innovator Abdel Mahammedi who has been selected as a @SUBiodesign Faculty Fellow! 🥳 This fellowship provides Stanford faculty with advanced training and mentorship in health technology innovation.
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We’re excited to be part of the 2026 #Stanford Health #AI Week @ the #AIMI Symposium tomorrow @ Stanford University! We’re proud to have our new CEO, Ohad Arazi, participating in the discussion. 📅 Wed 06/03 ⏰ 1:15 PM 📣 “What’s Working Now: Real-World Deployments in Health AI”
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Morgan Stanley Expansion Capital Leads $33M Investment in Subtle Medical to Accelerate #AI Innovation Across #MRI, #PET, and #CT as industry veteran, Ohad Arazi, joins the team as CEO. Read the full PR 👉 subtlemedical.com/subtle-med… #SubtleMedical #Radiology #Venture #GrowthMode
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Replying to @TheASNR
#ASNR26 was great, looking forward to #ASNR27 in San Diego! Maybe an oceanside fundraiser walk/run at #ASNR27? I missed getting an ASNR tshirt this year (luckily I had @theASFNR tshirt & @The_ASSR water bottle).
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Exciting hire at the Keck School of Medicine of USC: Joshua A. Hirsch, MD, is the new Chair of Radiology starting 8/17. A neurointerventional radiologist, he has 650+ peer-reviewed publications and is the former president of @TheASNR. Welcome to @RadiologyUSC, Dr. Hirsch!
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Greg Zaharchuk retweeted
Welcome Dr. Hirsch! We are excited for this next chapter and look forward to your leadership and vision for the department.
Exciting hire at the Keck School of Medicine of USC: Joshua A. Hirsch, MD, is the new Chair of Radiology starting 8/17. A neurointerventional radiologist, he has 650+ peer-reviewed publications and is the former president of @TheASNR. Welcome to @RadiologyUSC, Dr. Hirsch!
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Greg Zaharchuk retweeted
What a rivalry ?!!! Team AI (Random Forests) versus team head and neck ( The Turbinators)! @TheASNR @StanfordRad
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Great seeing new and old friends at the Stanford dinner ASNR 2026!
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Congratulations to Dr. Chris Hess, #ASNR 2026-2027 President, who was passed the gavel from outgoing President Dr. Yoshimi Anzai. Dr. Hess and the rest of the Board of Directors officially took over at the conclusion of the #ASNR26 Annual Business Meeting Wednesday morning.
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