Dom Withers (@RTphysicist) header
Dom Withers (@RTphysicist) profile picture

Dom Withers

@RTphysicist

Head of Radiotherapy Physics @BHR_RTPhysics at Queen's Hospital, Romford. Own opinions etc. Optimisation, optimisation, optimisation...

 Queen's Hospital, Romford
Joined November 2018
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Photo by Dom Withers (@RTphysicist)Photo by Dom Withers (@RTphysicist)Photo by Dom Withers (@RTphysicist)Photo by Dom Withers (@RTphysicist)Photo by Dom Withers (@RTphysicist)Photo by Dom Withers (@RTphysicist)
I'm not sure if @xkcd Randall Munroe's wife Megan had radiotherapy - but anyway, I'm going to put his latest beautiful and poignant cartoon on my office wall: a reminder that what we try to do is to make time for people to do the things they love with the people they love.
Randall Munroe (@xkcd) profile pictureRandall Munroe
@xkcd17 Nov 2020
Ten Years xkcd.com/2386
Image from Randall Munroe (@xkcd)
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This is Oli, a Radiotherapy Physicist Find out what he gets up to in his working day as we celebrate World Radiotherapy Awareness Day #WRAD. Let’s come together to ensure people living with cancer get access to life-saving radiotherapy. #OneVoiceForRadiotherapy #WorldRTDay This is part 7 (of 7) of Oli's day, stay tuned for more or hop on over to YouTube for the full video youtu.be/pd_t1qqMqt0 @WorldRTDay @ImperialNHS
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We are advertising an 8a Senior Radiotherapy Physicist post, with responsibility for Stereo & Imaging. All details on NHS Jobs: jobs.nhs.uk/candidate/jobadv… Application deadline is August 27th. Do get in touch if you’re interested!
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We are hiring - looking for a proactive and curiosity-driven clinical scientist to join our team as Principal Physicist (8b) in charge of QA & Dosimetry. More details on the Trust vacancies website at bhrhospitals.nhs.uk/current-… Do get in touch if you're interested!
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I've done a blog post for the charity RadiotherapyUK, reflecting on 25 years in radiotherapy radiotherapy.org.uk/radiothe…
Screenshot of Radiotherapy UK news feed, showing picture of me with a Halcyon linear accelerator and caption "What 25 years as a radiotherapy professional has taught me: Radiotherapy attracts innovators and those who want to do things better"

ALT Screenshot of Radiotherapy UK news feed, showing picture of me with a Halcyon linear accelerator and caption "What 25 years as a radiotherapy professional has taught me: Radiotherapy attracts innovators and those who want to do things better"

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Doctors, therapeutic radiographers and a radiotherapy physicist from @BHRUT_NHS Team Radiation Oncology are enjoying the UK @SABRconsortium meeting in Edinburgh. Picture is our poster on lowering conformity index target values for lung SABR @RTatBHRUT @BHR_RTPhysics #UKSABR24
Image from BHR RT Physics (@BHR_RTPhysics)
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Today is Global Clinical Engineering Day #GlobalCEDay This is Nick Norris, our Chief Radiotherapy Engineer responsible for maintenance of our CT scanner, 3 linacs, and associated equipment & accessories. Thanks to Nick & all CEs who keep our healthcare equipment safe & effective.
Chief Radiotherapy Engineer Nick Norris at the back of our Ethos linear accelerator

ALT Chief Radiotherapy Engineer Nick Norris at the back of our Ethos linear accelerator

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Colleagues from Oncology and Radiotherapy @RTatBHRUT and from our department have had a case study published in @CureusMedical, about CBCT-based oART using @VarianMedSys Ethos Therapy for an oesophagus patient after gastric pull-up See full paper here: cureus.com/articles/281515-c…
Pic of online paper: "CBCT (Cone-Beam CT)-Based Online Adaptive Radiotherapy in the Post-operative Oesophageal Cancer Patient", authors Amy Ward, Siobhan Graham, Ewan Almond and Dom Withers DOI: 10.7759/cureus.70971

ALT Pic of online paper: "CBCT (Cone-Beam CT)-Based Online Adaptive Radiotherapy in the Post-operative Oesophageal Cancer Patient", authors Amy Ward, Siobhan Graham, Ewan Almond and Dom Withers DOI: 10.7759/cureus.70971

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A very happy 6th birthday to the first Halcyon in the world to have kV-CBCT imaging. Still going strong as it marches into linac middle-age, and soon to be doing surface-guided treatments with Identify @RTatBHRUT @BHRUT_NHS @VarianMedSys @varianuk
BHR RT Physics (@BHR_RTPhysics) profile pictureBHR RT Physics@BHR_RTPhysics18 Jun 2018
Physics & Radiotherapy staff @BHR_hospitals today with the world's first patient treated on @VarianMedSys Halcyon v2.0 - kV CBCT, double-stacked MLCs improving plan quality, and faster patient set-up. Well done to all @RTatBHRUT & @BHR_RTPhysics, and to @varianuk for the upgrade.
Image from BHR RT Physics (@BHR_RTPhysics)
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Replying to @CGlideHurst @UW_RadoncDHO @SBlumPhysics @eric_wallat
Junior physicists always given these to work on in Treatment Planning 20 years ago in another department... I was known as "Captain Template", alongside my colleague "Princess Perspex"
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Utterly trivial post, but I'm curious - users of NHS email: has your default font changed to Aptos? I've changed mine back to Calibri. Getting a lot of NHS emails with Aptos. Constantly embracing change in radiotherapy physics, but for some reason I find this change unsettling...
"This is the Calibri font" in Calibri; and "This is the Aptos font" in Aptos

ALT "This is the Calibri font" in Calibri; and "This is the Aptos font" in Aptos

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Starting at 4pm UK time: not too late to register for a Varian webinar where department head Dom Withers @RTphysicist talks about treating breasts on Halcyon, and Halcyon versatility. If you miss it - should be available on myvarian in two weeks' time. myvarian.com/s/mvwebsummary?…
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Look at the size of that panel! Very excited to have UK's first @VarianMedSys HyperSight imaging system on our Ethos linac. CBCTs in 6 secs, improved reconstruction algorithms reducing artefacts, lower dose to patients. More details in images' ALT text. @RTatBHRUT @RTatBHRUT
Picture shows new "HyperSight" imaging panel in place in the gantry of an Ethos linac. The panel has an improved detector, and is 86x43cm - twice the size of the previous panel. Full-fan kV , and a faster gantry angle, means 211-degree CBCTs can be obtained in 6 seconds. More details at https://www.varian.com/en-gb/products/radiotherapy/treatment-delivery/hypersight

ALT Picture shows new "HyperSight" imaging panel in place in the gantry of an Ethos linac. The panel has an improved detector, and is 86x43cm - twice the size of the previous panel. Full-fan kV , and a faster gantry angle, means 211-degree CBCTs can be obtained in 6 seconds. More details at https://www.varian.com/en-gb/products/radiotherapy/treatment-delivery/hypersight

Picture is of kV imager in the gantry of an Ethos linac. The imager is more powerful than its replacement, and does full-fan instead of half-fan. Full bowtie filter can be seen at the front.

ALT Picture is of kV imager in the gantry of an Ethos linac. The imager is more powerful than its replacement, and does full-fan instead of half-fan. Full bowtie filter can be seen at the front.

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Dom Withers retweeted
Bin Cai (@BinCaiMedPhys) profile picture
Bin Cai@BinCaiMedPhys26 Jul 2023
This is the 1st debate I won since high school 🤣🤣🤣. It was a fantastic and energetic 🔥 session #AAPM2023. Thanks @YiRongPhD and Jay organizing.Thanks to my opponent Jeff who made it more fun. Thanks awesome audiences actively participating in the debate! #medphys #adaptiveRT
Image from Bin Cai (@BinCaiMedPhys)
Image from Bin Cai (@BinCaiMedPhys)
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Replying to @BinCaiMedPhys @aapmHQ @YiRongPhD
Wish I was there Bin - looks like it will be fun! Will be cheering you on from this side of the Atlantic.
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The Radiotherapy Physics stall at @BHRUT_NHS "NHS 75 Expo Past, Present and Future": some old dosimetrey equipment, pieces of linacs, patient immobilisation devices, and pictures & diagrams describing radiotherapy since 1896. The patient masks got the most attention! #nhs75
Radiotherapy Physics stall at BHRUT's "NHS 75 Expo Past, Present and Future". Radiotherapy patient immobilisation masks, ionisation chambers, a model linear accelerator for showing gantry, an old flattening filter, couch & collimator movements, some lead shields moulded to models of patients' faces, and pictures and diagrams showing the history of radiotherapy.

ALT Radiotherapy Physics stall at BHRUT's "NHS 75 Expo Past, Present and Future". Radiotherapy patient immobilisation masks, ionisation chambers, a model linear accelerator for showing gantry, an old flattening filter, couch & collimator movements, some lead shields moulded to models of patients' faces, and pictures and diagrams showing the history of radiotherapy.

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Physicist Ahmed Ifthaker, formerly of our department but now at Bart's, @BartsRadiother2, at #ESTRO23 next to the poster he co-authored whilst he was with us - Validation of local tolerances for Halcyon pre-treatment plan verification using a @sunnuclear PerFRACTION
Picture of Ahmed next to screen showing digital poster

ALT Picture of Ahmed next to screen showing digital poster

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Speaking again in Vienna, now at #ESTRO23, Siobhan Graham @siogra22 our Head of Radiotherapy @RTatBHRUT talks about how radiographers, dosimetrists & physicists in our department are credentialed to do Ethos online adaptive treatments with no doctor present
Picture of Head of Radiotherapy at Queen's Hospital in Romford (BHRUT) Siobhan Graham presenting at the ESTRO 2023 "Education is the RTT superpower" poster-discussion session, on the topic "Developing training for RTT-led CBCT-guided daily online adaptive radiotherapy for urological cancer"

ALT Picture of Head of Radiotherapy at Queen's Hospital in Romford (BHRUT) Siobhan Graham presenting at the ESTRO 2023 "Education is the RTT superpower" poster-discussion session, on the topic "Developing training for RTT-led CBCT-guided daily online adaptive radiotherapy for urological cancer"

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At the @VarianMedSys International Oncology Summit in Vienna pre @ESTRO_RT, our @RTatBHRUT Head of Radiotherapy, Siobhan Graham @siogra22 is on a panel discussing "Transforming Oncology Care with Digital Solutions"
Picture of stage at Varian's International Oncology Summit, with Siobhan Graham

ALT Picture of stage at Varian's International Oncology Summit, with Siobhan Graham

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#WheresCosmo @afbaker2010 @VarianMedSys @varianuk #empowerME
Image from Siobhan Graham (@siogra22)
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One week on, wanted to share reflections on being a partner in my own healthcare. 💙 #PatientPartnership
Image from Sara Turle 💙 (@SaraTurle)
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