# SGRT - Best Practice & Applications **URL:** https://forum.sgrt.org/c/sgrt-best-practice-1/20.md [Latest](https://forum.sgrt.org/latest.md) · [Categories](https://forum.sgrt.org/categories.md) · [Tags](https://forum.sgrt.org/tags.md) --- ## [About the SGRT - Best Practice & Applications category](https://forum.sgrt.org/t/about-the-sgrt-best-practice-applications-category/273)
**Author:** [@system](https://forum.sgrt.org/u/system)\ **Replies:** 0\ **Last updated:** [August 19, 2025, 8:25pm UTC](https://forum.sgrt.org/t/about-the-sgrt-best-practice-applications-category/273 "2025-08-19T20:25:47Z")
--- ## [3 point open face masks & shoulder positioning](https://forum.sgrt.org/t/3-point-open-face-masks-shoulder-positioning/485)
**Author:** [@Charlotte\_McAlinden](https://forum.sgrt.org/u/Charlotte_McAlinden)\ **Replies:** 3\ **Last updated:** [October 15, 2026, 6:51am UTC](https://forum.sgrt.org/t/3-point-open-face-masks-shoulder-positioning/485 "2026-10-15T06:51:00Z")
We have been trialling 5 point open face masks for head and necks as we have traditionally used 5 point closed. Our audit results have shown to be comparable, however we continue to have issues with shoulder position for… --- ## [Elekta Versa Linac - moving couch mid beam](https://forum.sgrt.org/t/elekta-versa-linac-moving-couch-mid-beam/439)
**Author:** [@Nick](https://forum.sgrt.org/u/Nick)\ **Replies:** 1\ **Last updated:** [July 16, 2026, 1:09pm UTC](https://forum.sgrt.org/t/elekta-versa-linac-moving-couch-mid-beam/439 "2026-07-16T13:09:55Z")
Our testing suggests that in the event that we needed to move the bed mid-beam (deltas out of tolerance) using send to couch we’d have to terminate the beam & re-set motors in the room which would be no quicker than manu… --- ## [Systematic Error Correction/Trend Analysis - Reference Surface Capture](https://forum.sgrt.org/t/systematic-error-correction-trend-analysis-reference-surface-capture/441)
**Author:** [@Nick](https://forum.sgrt.org/u/Nick)\ **Replies:** 1\ **Last updated:** [July 7, 2026, 8:14am UTC](https://forum.sgrt.org/t/systematic-error-correction-trend-analysis-reference-surface-capture/441 "2026-07-07T08:14:37Z")
We currently use 3-day Systematic Error Correction/Trend Analysis due to the need to be able to decide which patients could be treated without imaging in the event of one of our two Elekta linacs going down. Do any depa… --- ## [RTD's tolerance for moving back to Reference Capture without further CBCT](https://forum.sgrt.org/t/rtds-tolerance-for-moving-back-to-reference-capture-without-further-cbct/440)
**Author:** [@Nick](https://forum.sgrt.org/u/Nick)\ **Replies:** 1\ **Last updated:** [July 7, 2026, 7:57am UTC](https://forum.sgrt.org/t/rtds-tolerance-for-moving-back-to-reference-capture-without-further-cbct/440 "2026-07-07T07:57:21Z")
What tolerance do you have for moving a patient (pelvis) back to the reference capture taken after the initial CBCT, without needing a further CBCT to confirm? If your tolerance is over 0.5cm what’s your evidence to con… --- ## [Swallowing movement during larynx radiotherapy](https://forum.sgrt.org/t/swallowing-movement-during-larynx-radiotherapy/362)
**Author:** [@marko\_laaksomaa](https://forum.sgrt.org/u/marko_laaksomaa)\ **Replies:** 4\ **Last updated:** [April 9, 2026, 6:17pm UTC](https://forum.sgrt.org/t/swallowing-movement-during-larynx-radiotherapy/362 "2026-04-09T18:17:50Z")
Hello all I would like to know that how well and widely the issue Surface guided motion management in glottic larynx stereotactic body radiation therapy - ScienceDirect has been put into practice and how is it working? … --- ## [Breast CBCT & DIBH](https://forum.sgrt.org/t/breast-cbct-dibh/211)
**Author:** [@Charlotte\_McAlinden](https://forum.sgrt.org/u/Charlotte_McAlinden)\ **Replies:** 11\ **Last updated:** [March 13, 2026, 4:07pm UTC](https://forum.sgrt.org/t/breast-cbct-dibh/211 "2026-03-13T16:07:38Z")
Hi, Is anyone using CBCT imaging for breast DIBH patients? We currently CBCT all breasts and use the RGSC system for DIBH which will automatically beam hold the CBCT if they were to move out of breath hold (we spilt the… --- ## [General or Site Specific SGRT Policy](https://forum.sgrt.org/t/general-or-site-specific-sgrt-policy/200)
**Author:** [@joanne\_horgan](https://forum.sgrt.org/u/joanne_horgan)\ **Replies:** 4\ **Last updated:** [October 15, 2025, 9:26am UTC](https://forum.sgrt.org/t/general-or-site-specific-sgrt-policy/200 "2025-10-15T09:26:35Z")
Hi, everyone. I know that ROI and other processes will vary with different anatomical sites. I am in search of a general or even specific policy examples that I can use as a guide to help in the creation of policies for … --- ## [Planned couch values, tattooless](https://forum.sgrt.org/t/planned-couch-values-tattooless/319)
**Author:** [@marko\_laaksomaa](https://forum.sgrt.org/u/marko_laaksomaa)\ **Replies:** 3\ **Last updated:** [October 13, 2025, 5:13pm UTC](https://forum.sgrt.org/t/planned-couch-values-tattooless/319 "2025-10-13T17:13:04Z")
Hi everyone Do you have any tips on how to enter the planned couch values to the first treatment fraction such that they correspond with the right ones, patient being near isocenter after automatic drive to the planned … --- ## [SGRTuesdays Monthly Discussion Thread](https://forum.sgrt.org/t/sgrtuesdays-monthly-discussion-thread/250)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 6\ **Last updated:** [July 29, 2025, 4:21pm UTC](https://forum.sgrt.org/t/sgrtuesdays-monthly-discussion-thread/250 "2025-07-29T16:21:18Z")
This forum post is linked to our recent SGRTuesdays webinar series, which runs monthly on the last Tuesday of each month. Each session covers essential knowledge, research, and practical tips to enhance precision in ra… --- ## [Limb SGRT](https://forum.sgrt.org/t/limb-sgrt/257)
**Author:** [@StauntoAme](https://forum.sgrt.org/u/StauntoAme)\ **Replies:** 2\ **Last updated:** [June 13, 2025, 11:33am UTC](https://forum.sgrt.org/t/limb-sgrt/257 "2025-06-13T11:33:22Z")
We are looking to introduce limbs into our SGRT cohort. Would greatly appreciate any tips both positive and negative from any centres that use SGRT successfully for limb patients and what immobilisation is used alongside… --- ## [Breast treatment - using deformation tool](https://forum.sgrt.org/t/breast-treatment-using-deformation-tool/252)
**Author:** [@julie\_wood](https://forum.sgrt.org/u/julie_wood)\ **Replies:** 1\ **Last updated:** [February 19, 2025, 10:05am UTC](https://forum.sgrt.org/t/breast-treatment-using-deformation-tool/252 "2025-02-19T10:05:59Z")
We are currently having Align RT installed. It seems most departments still perform a field light coverage check for breast treatments when using SGRT for set up. Has anyone replaced this with a check of the deformation… --- ## [Breast treatment - using deformation tool](https://forum.sgrt.org/t/breast-treatment-using-deformation-tool/251)
**Author:** [@julie\_wood](https://forum.sgrt.org/u/julie_wood)\ **Replies:** 0\ **Last updated:** [February 3, 2025, 5:39pm UTC](https://forum.sgrt.org/t/breast-treatment-using-deformation-tool/251 "2025-02-03T17:39:28Z")
We are currently having Align RT installed. It seems most departments still perform a field light coverage check for breast treatments when using SGRT for set up. Has anyone replaced this with a check of the deformation… --- ## [Official SGRT Europe 2024 - SGRT: Game Changer Forum Thread](https://forum.sgrt.org/t/official-sgrt-europe-2024-sgrt-game-changer-forum-thread/248)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 1\ **Last updated:** [December 12, 2024, 10:16am UTC](https://forum.sgrt.org/t/official-sgrt-europe-2024-sgrt-game-changer-forum-thread/248 "2024-12-12T10:16:55Z")
Please feel free to use this thread to ask any questions you might have for our speakers. Questions from the event: Are you able to facilitate a replan within 24 hours during a patient’s treatment course when you no… --- ## [kv imaging during VMAT treatment](https://forum.sgrt.org/t/kv-imaging-during-vmat-treatment/246)
**Author:** [@Steven\_de\_Boer](https://forum.sgrt.org/u/Steven_de_Boer)\ **Replies:** 1\ **Last updated:** [October 28, 2024, 9:25am UTC](https://forum.sgrt.org/t/kv-imaging-during-vmat-treatment/246 "2024-10-28T09:25:58Z")
We have a trueBEAM with vision RT. I am wondering if others are having success in utilizing alignRT when treating a VMAT fields with the kV arm deployed (for simultaneous imaging). I assume that arms and gantry will bloc… --- ## [SGRTuesdays: Precision in Practice & Building Better Care Q&A](https://forum.sgrt.org/t/sgrtuesdays-precision-in-practice-building-better-care-q-a/240)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 2\ **Last updated:** [September 11, 2024, 9:28am UTC](https://forum.sgrt.org/t/sgrtuesdays-precision-in-practice-building-better-care-q-a/240 "2024-09-11T09:28:02Z")
This forum post is linked to our recent SGRTuesdays webinar series where each session will cover essential knowledge, research, and practical tips to enhance precision in radiotherapy treatments. Please feel free to u… --- ## [OFFICIAL ESTRO SGRT INSIGHTS 2024 FORUM THREAD](https://forum.sgrt.org/t/official-estro-sgrt-insights-2024-forum-thread/231)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 31\ **Last updated:** [May 14, 2024, 8:45am UTC](https://forum.sgrt.org/t/official-estro-sgrt-insights-2024-forum-thread/231 "2024-05-14T08:45:34Z")
Please feel free to use this thread to ask any questions you might have for our speakers. Questions from the event are posted below: --- ## [SGRT STUDENT BITESIZE COURSE Q&A THREAD](https://forum.sgrt.org/t/sgrt-student-bitesize-course-q-a-thread/232)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 0\ **Last updated:** [May 13, 2024, 3:31pm UTC](https://forum.sgrt.org/t/sgrt-student-bitesize-course-q-a-thread/232 "2024-05-13T15:31:32Z")
Please feel free to use this thread to ask any questions you might have for our speakers. You can \[ click here to return to the course.\](https://sgrt.org/upcoming-meetings/the-sgrt-student-webinar-series/) --- ## [SGRTUESDAYS: FEBRUARY 2024 Q&A](https://forum.sgrt.org/t/sgrtuesdays-february-2024-q-a/226)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 2\ **Last updated:** [March 18, 2024, 1:22pm UTC](https://forum.sgrt.org/t/sgrtuesdays-february-2024-q-a/226 "2024-03-18T13:22:03Z")
This forum post is linked to our recent SGRTuesdays webinar series, covering topics around how SGRT can benefit your clinical practice at every stage of the RT workflow (Sim-Plan-Treat-Dose) and also for every patient … --- ## [Topic to research, pelvis ROIs](https://forum.sgrt.org/t/topic-to-research-pelvis-rois/227)
**Author:** [@marko\_laaksomaa](https://forum.sgrt.org/u/marko_laaksomaa)\ **Replies:** 0\ **Last updated:** [February 20, 2024, 7:32am UTC](https://forum.sgrt.org/t/topic-to-research-pelvis-rois/227 "2024-02-20T07:32:57Z")
Hello Optimal AlignRT ROI for breast RT is studied. https://journals.viamedica.pl/rpor/article/view/75829 https://aapm.onlinelibrary.wiley.com/do … acm2.13410 https://aapm.onlinelibrary.wiley.com/do … acm2.14216 Sev… --- ## [6D couch corrections](https://forum.sgrt.org/t/6d-couch-corrections/225)
**Author:** [@marko\_laaksomaa](https://forum.sgrt.org/u/marko_laaksomaa)\ **Replies:** 1\ **Last updated:** [February 5, 2024, 10:15am UTC](https://forum.sgrt.org/t/6d-couch-corrections/225 "2024-02-05T10:15:23Z")
Has anyone controlled secondary patient motion caused by 6D correction somehow in a daily practice? Have you taken new images after 2-3 degrees pitch and/or roll CBCT- corrections to verify that the patient has not shown… --- ## [DSPS Faceless Masks](https://forum.sgrt.org/t/dsps-faceless-masks/206)
**Author:** [@suzanne\_coupland](https://forum.sgrt.org/u/suzanne_coupland)\ **Replies:** 2\ **Last updated:** [February 1, 2024, 11:34am UTC](https://forum.sgrt.org/t/dsps-faceless-masks/206 "2024-02-01T11:34:07Z")
Does anyone here have experience of DSPS faceless masks, and if so, do you have any exclusion criteria for those patients who it would not be suitable for? We’re currently trialling this and the Orfit open faced hybrid … --- ## [Camera blocking with VMAT](https://forum.sgrt.org/t/camera-blocking-with-vmat/223)
**Author:** [@Steven\_de\_Boer](https://forum.sgrt.org/u/Steven_de_Boer)\ **Replies:** 5\ **Last updated:** [February 1, 2024, 11:27am UTC](https://forum.sgrt.org/t/camera-blocking-with-vmat/223 "2024-02-01T11:27:56Z")
We are a new user and are currently treating without beam control. We are noticing that the displayed deltas will be out of tolerance only when some cameras are blocked by the rotating gantry. Once the camera is no longe… --- ## [Official SGRT Europe 2023 forum thread](https://forum.sgrt.org/t/official-sgrt-europe-2023-forum-thread/221)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 19\ **Last updated:** [December 14, 2023, 11:57am UTC](https://forum.sgrt.org/t/official-sgrt-europe-2023-forum-thread/221 "2023-12-14T11:57:01Z")
Please feel free to use this thread to ask any questions you might have for our speakers. Questions from the event are posted below: --- ## [Tattooless workflows - use of set up offsets](https://forum.sgrt.org/t/tattooless-workflows-use-of-set-up-offsets/222)
**Author:** [@Clare\_Hall](https://forum.sgrt.org/u/Clare_Hall)\ **Replies:** 3\ **Last updated:** [December 13, 2023, 9:22am UTC](https://forum.sgrt.org/t/tattooless-workflows-use-of-set-up-offsets/222 "2023-12-13T09:22:43Z")
With a tattoo workflow, the treatment planning process generally generates ‘shifts’ indicating the delta from the tattoos to the plan isocentre. Also sometimes called set up offsets. These offsets are exported with the p… --- ## [Head and neck setup](https://forum.sgrt.org/t/head-and-neck-setup/104)
**Author:** [@marko\_laaksomaa](https://forum.sgrt.org/u/marko_laaksomaa)\ **Replies:** 13\ **Last updated:** [November 22, 2023, 9:12am UTC](https://forum.sgrt.org/t/head-and-neck-setup/104 "2023-11-22T09:12:58Z")
Hi all I have done 100 patient 2D/2D image analysis of residual errors after daily IGRT in the area of c1, c5-7, mandible and base of the skull, which are the typical main bony landmarks of neck cancer radiotherapy for … --- ## [SGRTuesdays: A new season for SGRT Q&A](https://forum.sgrt.org/t/sgrtuesdays-a-new-season-for-sgrt-q-a/218)
**Author:** [@Mina](https://forum.sgrt.org/u/Mina)\ **Replies:** 0\ **Last updated:** [November 7, 2023, 4:04pm UTC](https://forum.sgrt.org/t/sgrtuesdays-a-new-season-for-sgrt-q-a/218 "2023-11-07T16:04:56Z")
This forum post is linked to our recent SGRTuesdays webinar, covering topics around how SGRT can benefit planning, clearance mapping and dose visualization. Please feel free to use this thread to ask any questions you… --- ## [Pitch on Pelvis Patients](https://forum.sgrt.org/t/pitch-on-pelvis-patients/217)
**Author:** [@nicola\_snell](https://forum.sgrt.org/u/nicola_snell)\ **Replies:** 1\ **Last updated:** [October 11, 2023, 9:41am UTC](https://forum.sgrt.org/t/pitch-on-pelvis-patients/217 "2023-10-11T09:41:53Z")
Hi All, Just wondering if anyone has had any experience of having significant pitch on their pelvis patients that is not picked up on SGRT but CBCT’s show it? We have looked at drawing our ROI’s slightly higher on the h… --- ## [RGSC Vs SIM RT](https://forum.sgrt.org/t/rgsc-vs-sim-rt/216)
**Author:** [@GeorgeG](https://forum.sgrt.org/u/GeorgeG)\ **Replies:** 1\ **Last updated:** [October 3, 2023, 9:44am UTC](https://forum.sgrt.org/t/rgsc-vs-sim-rt/216 "2023-10-03T09:44:10Z")
Hi all, We are looking to install VisionRT and just wondered if anyone had any experience of moving to SimRT having already got RGSC. We use RGSC for DIBH and back up gaiting for our lungs/SABR treatments. Is there mu… --- ## [TBI- ROI](https://forum.sgrt.org/t/tbi-roi/212)
**Author:** [@CaitlinP](https://forum.sgrt.org/u/CaitlinP)\ **Replies:** 1\ **Last updated:** [September 13, 2023, 2:31pm UTC](https://forum.sgrt.org/t/tbi-roi/212 "2023-09-13T14:31:04Z")
Good Morning, Our newest goal is TBI- Rapid arc- 5 iso treatment using Align RT. What is your recommendations on drawing ROI for multiple iso’s? Any imput for TBI setup with Align RT will be greatly appreciated. Thank … [Next page](https://forum.sgrt.org/c/sgrt-best-practice-1/20.md?page=1)