Patient Immobilization · Literature Radar
Head-and-neck masks — reproducibility, intrafraction motion, SRS frame-mask choices. 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…
Ryan S, Fitzpatrick C, Malone C, Tynan M et al.
Head and neck (H&N) radiotherapy requires reproducible immobilisation to maintain geometric accuracy; however, conventional thermoplastic masks are associated with patient discomfort and anxiety. Surf…
Pandey VK, Munshi A, Maria A.
AbstractWe designed an indigenous novel tongue-sparing intraoral prosthesis (TS-IOP) to minimize tongue toxicity in a 58-year-old patient with submental soft tissue sarcoma. We initially performed rad…
Aissi S, O'Reilly S, Harari C, Morris B et al.
Upright positioning coupled with gantry-less proton therapy designs may reduce facility footprint and cost while introducing specific technical requirements for reproducible positioning, immobilizatio…
Robinson A, Caldwell MR.
BackgroundFrameless thermoplastic masks are standard for intracranial stereotactic radiosurgery (SRS), with the Encompass (CQ Medical) widely used on the Varian HyperArc platform. A candidate mask mus…
Victor Goulenko, Sarthak Sinha, Venkatesh Shankar Madhugiri, Neil D. Almeida et al.
BACKGROUND: Stereotactic radiosurgery requires high precision and stable target immobilization, especially for extracranial lesions prone to motion. Lesions located low in the neck pose unique challen…
Golten J, Bruce A, Egleston D, Miles E et al.
AimsThe APPROACH (Analysis of Proton vs Photon Radiotherapy in Oligodendroglioma and Assessment of Cognitive Health) trial is a UK randomised controlled study comparing photon radiotherapy (RT) with p…
Hirotaki K, Oyoshi H, Motegi K, Motegi A et al.
Accurate positioning remains a central challenge in head and neck radiotherapy because highly conformal dose distributions are delivered near multiple critical organs, and clinically relevant discrepa…
Yang Y, Luo F, Wang C, Ren G et al.
BackgroundPrimary optic nerve sheath meningioma (pONSM) causes progressive vision loss. Surgery carries high morbidity (~ 94% visual impairment), and conventional fractionated radiotherapy (CFRT; 50.4…
Wan B, Han J, Zheng Y, Liu C et al.
ObjectivesTo evaluate the clinical application of AlignRT surface-guided radiotherapy (SGRT) by quantifying interfractional setup errors in patients with breast-conserving surgery (BCS) stratified by …
Suzuki K, Hiraoka S, Nakashima R, Sasaki M et al.
PurposeRadiation dermatitis is among the most common adverse events associated with radiation therapy for early-stage glottic cancer. This study evaluated the effect of cutting out a portion of the th…
Da Silva Mendes V, Garny S, Huang L, Schönecker S et al.
BackgroundFrameless linear accelerator (linac)-based image-guided stereotactic radiosurgery (SRS) or fractionated stereotactic radiotherapy (FSRT) are a widely used treatment option for intracranial l…
Nomura Y, Tanaka S, Takei H, Maeda K et al.
PurposeThis study quantified inter- and intra-fractional setup accuracies in the upright posture and compared them among setups with different immobilization methods.MethodsTwo and four setups were ex…
Islam J, Kausar A, Shemanto MU, Abbas A et al.
In radiation therapy, the planning target volume (PTV) is a geometrical concept used to account for the variations of target position during treatment in terms of systematic (Σ) and random (σ) errors.…
Lin W, Xiao C, Xiao L, Fang J et al.
ObjectiveThis study aimed to develop and validate an unsupervised machine learning-based approach for near-real-time alerting of statistically abnormal six-dimensional (6D) radiotherapy setup errors. …
Obena S, Alves K, Zwahlen DR, Clivio A et al.
BackgroundOpen-face masks (OFMs) provide comparable immobilization or superior accuracy with greater patient comfort than closed-face masks (CFMs), but their impact on workflow efficiency in stereotac…
Adlienė D, Jreije A, Griškevičius P, Keršienė N et al.
Accurate immobilization is critical in head and neck (H&N) radiotherapy to ensure precise dose delivery while minimizing irradiation of surrounding healthy tissues. However, conventional thermoplastic…
Shang QJ, Zhang M, Zhao BX, Wang Q et al.
PurposePostmastectomy radiotherapy (PMRT) requires a balance between optimal target coverage and organ-at-risk (OAR) sparing. Thermoplastic masks and different bolus thicknesses are frequently applied…
Challapalli S, Choudhary A, Nagesh J, C S et al.
IntroductionThis study aims to analyze the impact of the surface dose at depth (1-5mm) in different planning techniques and immobilization devices by varying the dose-voxel size (DVS) and statistical …
Dewit B, Peeters R, Nuyts S, Depuydt T.
Accurate and reproducible immobilization is critical for effective radiotherapy in the head and neck region, but conventional thermoplastic masks are uncomfortable, labor-intensive and time-consuming …
Li Q, Liu R, Han L, Xu Y et al.
PurposeThis study evaluated setup error and efficiency in patients with non-small cell lung cancer (NSCLC) receiving stereotactic body radiation therapy (SBRT), comparing surface-guided radiation ther…
Pelland MÈ, Lagadec-Gaulin L, Bahig H, Filion E et al.
ObjectiveThis study aims to develop a brief screening questionnaire for early identification of radiotherapy mask-related anxiety in patients with head and neck cancer.MethodsA cross-sectional study r…
Chen X, Huang X, Wang Y, Diao W et al.
This study aims to expand and enhance traditional fixation techniques by comparing positioning errors and dosimetric variations in the target area and organs at risk (OARs) between conventional and cu…
Varnava M, Kawashima M, Matsumura A, Oohashi Y et al.
Background and purposeUpright patient positioning is an emerging approach in radiotherapy that may overcome current limitations in carbon ion radiotherapy (CIRT). This study evaluated upright immobili…
Ding Z, Li GQ, Liu Q, Zhu X et al.
ObjectiveThis study aims to evaluate the impact of personalized 3D-printed headrest devices on setup errors and dosimetry in nasopharyngeal carcinoma radiotherapy.MethodsA total of 50 nasopharyngeal c…
Srivastava R, Sharma S, Sharma L, Sehgal N et al.
AimThis study evaluated the feasibility of reusing thermoplastic masks in radiation oncology to reduce environmental waste and financial costs.Materials and methodsThe study conducted from July 2024 t…
Liu X, Sakaamini A, Gu W, Denis C et al.
PurposeStereotactic radiosurgery (SRS) is a nonsurgical method for treating brain abnormalities and small tumors. Traditional high-accuracy SRS requires a rigid metal head frame screwed into the skull…
Joshi AM, Mehta SA, Tandiya P, Sonwani V et al.
PurposeHead and neck cancer (HNC) patients undergoing radiation therapy (RT) often experience mask anxiety due to the use of thermoplastic masks for immobilization. This study evaluated the effectiven…
Yoda S, Maruo T, Oshima Y, Ueno H et al.
The reproducibility of immobilization is critical in small animal radiotherapy, especially for the head region. We developed a reusable immobilization method using a thermoplastic mask molded with cyl…
Ding GX, Homann KL, Shinohara ET.
PurposeOsteoarthritis (OA) is the most common form of arthritis, affecting over 32 million Americans. Low dose radiation therapy (LDRT) is being used to treat OA, including small joints. Treatment ene…
Wang H, Pi Y, Liu C, Wang P et al.
PurposeThis study aims to compare the technical characteristics of TomoDirect (TD) radiotherapy and TomoHelical (HT) radiotherapy in total skin irradiation (TSI) applications. We conducted a comprehen…
Moon HC, Lee D, Park YS.
ObjectiveThe Leksell Gamma Knife (LGK) Icon™ facilitates frameless (mask-based) fixation through its high-definition motion management (HDMM) system. However, the HDMM only records the intra-fractiona…
Roy S, Suryavanshi K, Sridhar PS, Visariya B et al.
IntroductionThe CyberKnife® (CK) system is capable of treating localised brain lesions with the help of a 6D skull tracking system. Hair position plays a crucial role in the success of CK radiosurgery…
Chen J, Guo Y, Wang C, Lin S et al.
BackgroundStyrofoam is a patient-specific immobilization device in radiotherapy; most previous studies about the impact of styrofoam on setup errors have only analyzed a single tumor type, and have no…
Williams AD, Boniuk M, Hamstra D, Wallace RT et al.
Uveal melanoma (UM) is the most common primary intraocular malignancy, traditionally managed with episcleral plaque brachytherapy or enucleation. Single-fraction stereotactic radiosurgery (SRS) using …
Kang CL, Huang YY, Wang JC, Li FJ et al.
PurposeTo assess how nasogastric and tracheostomy tubes affect the precision of image-guided radiation therapy (IGRT) in head and neck cancer (HNC) patients.Methods and materialsA retrospective analys…
Pang G, Lu Y, Xu Y, Meng Q et al.
Radiotherapy is a crucial treatment modality for head and neck tumors. Precise patient positioning is vital for ensuring the reproducibility and accuracy of the treatment. Clinically, thermoplastic he…
Yang F, Li J, Li B, Zhang L et al.
ObjectiveThe primary aim of this investigation is to assess the effectiveness of implementing an innovative immobilization approach, spec ically the utilization of personalized open-face masks in comb…
Goulenko V, Madhugiri VS, Almeida ND, Podgorsak MB et al.
BackgroundImplementing the thermoplastic mask as a treatment option in Gamma Knife radiosurgery (GKRS) has madethe discussion of the relative benefits of frame- or mask-based fixation for treatment a …
Apale IP, Agnew A, Foley D.
This study compared three Brainlab thermoplastic masks-Cranial 4pi basic, stereotactic (Close Mask V2), and open-face-to see how well they limited head movement during Stereotactic Radiosurgery (SRS).…
Cai JH, Peng X, Lu JY, Lu JY.
PurposeTo evaluate the impact of patient setup errors on the dosimetry and radiobiological models of intensity-modulated radiotherapy (IMRT) for esophageal cancer.Methods and materialsThis retrospecti…
Zhao L, Zhang L, Hu Y, Zhong Y.
BackgroundImmobilization devices are essential for maintaining accurate and repeatable patient positioning in radiotherapy. This study aimed to evaluate the setup errors and dosimetric deviation induc…
Walter YA, Speir DB, Burrell WE, Wang CJ et al.
Stereotactic ablative radiotherapy (SABR) has become a key technique in management of spine metastases. With improved control over treatment plan dosimetry, there is a greater need for accurate patien…
Ruan J, Huang X, Wang T, Mai X et al.
ObjectiveThe objective of this study is to evaluate the impact of different belly board and daily changes in patient's body-mass factor (BMF) on setup displacement in radiotherapy for rectal cancer.Me…
You W, Chen C, Chu H, Yau Y et al.
Patients with head and neck cancers often require radiotherapy, where immobilization devices like thermoplastic masks ensure precise radiation delivery by minimizing movement. However, the quality of …
Li C, Xiao YP, Huang L, Jing W et al.
PurposeTo minimize radiation exposure to the small bowel (SB) in patients undergoing treatment for gynecological tumors by adopting a comfortable positioning method.Methods and patientsAll 76 women un…
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…
Kang CL, Huang YY, Chen YR, Tsai SH et al.
Purpose: The aim of this study was to investigate whether variations in cranial angles and treatment accuracy during CyberKnife robotic radiosurgery necessitate adjustment of the margins of the planni…
Jablonska PA, Parent A, La Macchia N, Chan HHL et al.
Background and purposeBrain radiotherapy (cnsRT) requires reproducible positioning and immobilization, attained through redundant dedicated imaging studies and a bespoke moulding session to create a t…
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 …
Dougherty M, Mullikin TC, Park SS.
Purpose/objective(s)To report the techniques of treating primary tumors and metastases of the spine with stereotactic proton ablative radiotherapy.Materials/methodsRobustly optimized IMPT plans were g…
Song Y, Peng J, Chen Q, Luo H.
Background: This study aimed to analyze the difference of setup reproducibility between Vacuum-lock bag and Thermoplastic mask in the radiotherapy for breast cancer. Methods: A total of 100 invasive b…
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…
Chen G, Dong B, Shan G, Zhang X et al.
BackgroundAn accurate, reproducible, and comfortable immobilization device is essential for stereotactic radiotherapy (SBRT) in patients with lung cancer. This study compared thermoplastic masks (TMP)…
Haraldsson A, Engellau J, Lenhoff S, Engelholm S et al.
Total Marrow Irradiation (TMI) with Helical Tomotherapy is a radiotherapy treatment technique that targets bone marrow and sanctuary sites prior to stem cell or bone marrow transplantation (SCT/BMT). …
Park HR, Park KW, Lee JM, Kim JH et al.
BackgroundRecently, a new generation of gamma knife radiosurgery (GKRS) equipped with a frameless immobilization system has encouraged the use of fractionated GKRS as an increasingly favorable treatme…
Carminucci A, Nie K, Weiner J, Hargreaves E et al.
OBJECTIVEThe Leksell Gamma Knife Icon (GK Icon) radiosurgery system can utilize cone-beam computed tomography (CBCT) to evaluate motion error. This study compares the accuracy of frame-based and frame…
Nixon JL, Cartmill B, Turner J, Pigott AE et al.
IntroductionWhile use of a thermoplastic mask during radiotherapy (RT) treatment for head and neck cancer (HNC) is an essential component of safe patient care, there is little understanding of the ext…
Udayashankar AH, Noorjahan S, Srikantia N, Babu KR et al.
AimTo identify the most reproducible technique of patient positioning and immobilization during pelvic radiotherapy.BackgroundRadiotherapy plays an important role in the treatment of pelvic malignanci…
Swinscoe JA, Dickie CI, Ireland RH.
Radiation therapy for limb-extremity soft tissue sarcoma (STS) requires accurate, reproducible dose delivery. However, patient positioning is challenging and there is a lack of existing guidelines to …
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