Patient Immobilization · Literature Radar
3DoF / 6DoF head adjusters that close the rotational gap on bore-class linacs — pitch / roll / yaw correction studies. Curated daily from Europe PMC (PubMed + PMC + preprints) and OpenAlex — free-full-text link on each open-access paper.
Robinson A, Kandula S.
BackgroundThermoplastic immobilization remains standard for head and neck radiation therapy, but rigid face masks may produce clinically meaningful anxiety, claustrophobia, and treatment intolerance i…
Holst SDI, Andersen M, Jakobsen AR, Nielsen MS.
Daily cone-beam computed tomography (CBCT) based image-guided radiotherapy (IGRT) with six degrees of freedom (6DOF) is standard for head and neck cancer. We retrospectively analyzed 669 sessions from…
Grohmann M, Petersen C, Hintelmann K, Todorovic M.
PurposeThis study evaluates the impact of intrafractional motion on targeting accuracy in frameless single-isocenter multi-target stereotactic radiosurgery (SIMT) for brain metastases and examines the…
Palaysi E, Nguyen D, Farah J, Barbet N et al.
PurposeTo assess the clinical feasibility and setup accuracy of using open-face masks in combination with the AlignRT® InBore surface-guided radiation therapy (SGRT) system on the Halcyon™ for intracr…
Jaiswal D, Goyal M, Bhatt CP.
PurposeTo evaluate the clinical implementation and setup accuracy of real-time intrafraction cone-beam computed tomography imaging during stereotactic radiosurgery and stereotactic radiotherapy.Materi…
Lin W, Xiao L, Chen J, Lin X et al.
OBJECTIVE: Cone-beam computed tomography (CBCT) has been widely adopted for patient setup evaluation and error correction in head and neck radiotherapy. Although different anatomical registration regi…
Lee PL, Panetta JV, Lukez AP, Karande MK et al.
Purpose Image-guided radiation therapy (IGRT) allows for a reduction in target volume margins, but relies on accurate daily set-up. Six-degree-of-freedom couches offer rotational adjustments during al…
Veluthattil AC, Natarajan N, Thiruthiyil A.
BackgroundThe aim of the study was to determine an ideal planning target volume (PTV) margin using the Van Herks formula by auditing and reporting the setup errors in 6 dimensions of patients undergoi…
Suzuki T, Ohira S, Imanishi Y, Yamaguchi Y et al.
Background/aimThis study assessed the positional detection accuracy of the Catalyst+ HD system for intracranial stereotactic irradiation (STI) under clinically relevant conditions, including variation…
Li Y, Hua R, Dai L, Chen W et al.
BackgroundRotational error cannot be overlooked in single-isocenter multi-target (SIMT) stereotactic radiotherapy. This retrospective study aimed to evaluate the treatment accuracy of linear accelerat…
Callens D, Benazzouz C, Stessens L, Piot W et al.
IntroductionThe Dual Shell Encompass Fibreplast™ System (DS-Encompass) by CQ Medical™ is validated for frameless immobilization in stereotactic brain radiotherapy. An alternative mask model has been p…
Golmakani S, McGrath AN, Williams TJ.
PurposeThis study uses a phantom to investigate the dosimetric impact of rotational setup errors for Single Isocenter Multiple Targets (SIMT) HyperArc plans. Additionally, it evaluates intra-fractiona…
Yoon JW, Kim MY, Park S, Cheong KH et al.
BackgroundDry eye syndrome has been recently reported in patients who underwent whole brain radiotherapy (WBRT). WBRT based on a couch with three-degrees of freedom (3D) can occasionally be performed …
Lee SK, Huang S, Zhang L, Ballangrud AM et al.
PurposeTo evaluate the accuracy of surface-guided radiotherapy (SGRT) in cranial patient setup by direct comparison between optical surface imaging (OSI) and cone-beam computed tomography (CBCT), befo…
Komiyama R, Ohira S, Ueda H, Kanayama N et al.
PurposeThis study investigated the intra-fractional motion (IM) of patients immobilized using the QFix Encompass Immobilization System during HyperArc (HA) treatment.MethodHA treatment was performed o…
Nakano H, Tanabe S, Utsunomiya S, Yamada T et al.
In conventional stereotactic radiosurgery (SRS), treatment of multiple brain metastases using multiple isocenters is time-consuming resulting in long dose delivery times for patients. A single-isocent…
Swinnen ACC, Öllers MC, Loon Ong C, Verhaegen F.
To evaluate the accuracy of a commercial optical surface tracking (OST) system and to demonstrate how it can be implemented to monitor patient positioning during non-coplanar single isocenter stereota…
Mangesius J, Seppi T, Weigel R, Arnold CR et al.
BackgroundThe present study investigates the intrafractional accuracy of a frameless thermoplastic mask used for head immobilization during stereotactic radiotherapy. Non-invasive masks cannot complet…
Lewis BC, Snyder WJ, Kim S, Kim T.
PurposeThe aim of this study was to investigate the intra-fractional patient motion using the ExacTrac system in LINAC-based stereotactic radiosurgery (SRS).MethodA retrospective analysis of 104 SRS p…
Wang H, Wang C, Tung S, Dimmitt AW et al.
The purpose of this study was to investigate the setup and positioning uncertainty of a custom cushion/mask/bite-block (CMB) immobilization system and determine PTV margin for image-guided head and ne…
Stanhope C, Chang Z, Wang Z, Yin FF et al.
ObjectiveOur purpose was to address challenges associated with single-isocenter radiosurgery for multiple intracranial targets (SIRMIT) including increased sensitivity to rotational uncertainties (res…
Li G, Ballangrud A, Chan M, Ma R et al.
The purpose of this study was to compare two clinical immobilization systems for intracranial frameless stereotactic radiosurgery (fSRS) under the same clinical procedure using cone-beam computed tomo…
Wen N, Li H, Song K, Chin-Snyder K et al.
The purpose of this study is to characterize the dosimetric properties and accuracy of a novel treatment platform (Edge radiosurgery system) for localizing and treating patients with frameless, image-…
Schmidhalter D, Malthaner M, Born EJ, Pica A et al.
PurposeThe range of patient setup errors in six dimensions detected in clinical routine for cranial as well as for extracranial treatments, were analyzed while performing linear accelerator based ster…
Schmidhalter D, Fix MK, Wyss M, Schaer N et al.
PurposeThe aim of this work is to evaluate the geometric accuracy of a prerelease version of a new six degrees of freedom (6DoF) couch. Additionally, a quality assurance method for 6DoF couches is pro…
Dhabaan A, Schreibmann E, Siddiqi A, Elder E et al.
Frameless radiosurgery is an attractive alternative to the framed procedure if it can be performed with comparable precision in a reasonable time frame. Here, we present a positioning approach for fra…
Guckenberger M, Roesch J, Baier K, Sweeney RA et al.
BackgroundTo investigate geometric and dosimetric accuracy of frame-less image-guided radiosurgery (IG-RS) for brain metastases.Methods and materialsSingle fraction IG-RS was practiced in 72 patients …
Ohtakara K, Hayashi S, Tanaka H, Hoshi H et al.
PurposeTo compare the positioning accuracy and stability of two distinct noninvasive immobilization devices, a dedicated (D-) and conventional (C-) mask, and to evaluate the applicability of a 6-degre…
Gevaert T, Verellen D, Engels B, Depuydt T et al.
PurposeTo evaluate the added value of 6-degree of freedom (DOF) patient positioning with a robotic couch compared with 4DOF positioning for intracranial lesions and to estimate the immobilization char…
Gevaert T, Verellen D, Tournel K, Linthout N et al.
PurposeStereotactic radiosurgery using frame-based positioning is a well-established technique for the treatment of benign and malignant lesions. By contrast, a new trend toward frameless systems usin…
Verbakel WF, Lagerwaard FJ, Verduin AJ, Heukelom S et al.
PurposeTo determine the accuracy of frameless stereotactic radiosurgery using the BrainLAB ExacTrac system and robotic couch by measuring the individual contributions such as the accuracy of the imagi…
Masi L, Casamassima F, Polli C, Menichelli C et al.
PurposeAn analysis is performed of the setup errors measured by a kV cone beam computed tomography (CBCT) for intracranial stereotactic radiotherapy (SRT) patients immobilized by a thermoplastic mask …
Wurm RE, Erbel S, Schwenkert I, Gum F et al.
ObjectiveTo evaluate our initial experience with Novalis (BrainLAB, Heimstetten, Germany) frameless image-guided noninvasive radiosurgery.MethodsThe system combines the dedicated Novalis linear accele…
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