Patient positioning in head and neck cancer

  title={Patient positioning in head and neck cancer},
  author={Christina Leitzen and Timo Martin Wilhelm-Buchstab and Thomas M{\"u}dder and Martina Heimann and David Koch and Christopher Schmeel and Birgit Simon and Sabina Stumpf and Susanne Vornholt and Stephan Garbe and Fred R{\"o}hner and Felix Schoroth and Hans Heinz Schild and Heinrich Sch{\"u}ller},
  journal={Strahlentherapie und Onkologie},
ObjectiveTo evaluate the interfractional variations of patient positioning during intensity-modulated radiotherapy (IMRT) with helical tomotherapy in head and neck cancer and to calculate the required safety margins (sm) for bony landmarks resulting from the necessary table adjustments.Materials and methodsIn all, 15 patients with head and neck cancer were irradiated using the Hi-Art II tomotherapy system between April and September 2016. Before therapy sessions, patient position was frequently… 

Accuracy of surface‐guided patient setup for conventional radiotherapy of brain and nasopharynx cancer

This study demonstrates that SGRT has sufficient accuracy for fast in‐room patient setup and allows real‐time motion monitoring for beam holding during treatment, potentially useful to guide radiotherapy of brain and nasopharynx cancer with standard fractionation.

Head and neck radiotherapy on the MR linac: a multicenter planning challenge amongst MRIdian platform users

Purpose of this study is to evaluate plan quality on the MRIdian (Viewray Inc., Oakwood Village, OH, USA) system for head and neck cancer (HNC) through comparison of planning approaches of several

Radiotherapy as Part of Treatment Strategies in Nasal Cavity and Paranasal Sinus Malignancies

IMRT appears to be linked with higher LRC and lower inner-ear acute toxicities compared to conventional RT, and this analysis compared conventional-radiotherapy (CRT) and image-guided IMRT outcomes for NC/PNS malignancies.

Tomotherapy in malignant mesothelioma: a planning study to establish dose constraints

With helical tomotherapy, postoperative treatment for malignant pleural mesothelioma after pleurectomy achieves good target coverage combined with simultaneous dose sparing to the (especially contralateral) OARs.

Development of twist‐correction system for radiotherapy of head and neck cancer patients

The prototype device for correcting the twist of patients by adjustment of the three rotation angles in two independent plates connected by a joint is created and is expected to reduce the residual error of the patient position due to the twist.

Helical tomotherapy: Comparison of Hi-ART and Radixact clinical patient treatments at the Technical University of Munich

With the Radixact system MVCT image quality has been improved allowing for fast and precise interfraction dose adaptation, and the improved time effort for patient treatment could increase the accessibility for clinical usage.

Head and neck radiotherapy-induced changes in dentomaxillofacial structures detected on panoramic radiographs: A systematic review

The interaction between ionizing radiation and maxillofacial structures results in hazard to the tissues involved, particularly the bone tissue, periosteum, connective tissue of the mucosa, and endothelium.



Variation of Neck Position With Image-guided Radiotherapy For Head And Neck Cancer

Position variation in the low neck varied in excess of the planning margins, and the results suggest that the neck volumes located distant from the region of fusion should be drawn with larger planning margins.

Setup uncertainties for inter-fractional head and neck cancer in radiotherapy

The authors have to be aware of the inter-fractional motion of cervical spine in head and neck RT and give enough margins in RT planning.

Analysis of daily setup variation with tomotherapy megavoltage computed tomography.

  • Jining ZhouB. Uhl Y. Lo
  • Medicine
    Medical dosimetry : official journal of the American Association of Medical Dosimetrists
  • 2010

Radial displacement of clinical target volume in node negative head and neck cancer

A more generous radial margin should be applied to the lower part of the neck LN for better clinical target coverage and dose delivery in patients with node negative head and neck cancer.

The ratio of weight loss to planning target volume significantly impacts setup errors in nasopharyngeal cancer patients undergoing helical tomotherapy with daily megavoltage computed tomography

Patients with weight loss > 5% and smaller PTVs, possibly because of small body frame or neck girth, were more likely to have increased setup errors in the AP direction.

Adequate margins for random setup uncertainties in head-and-neck IMRT.

Setup error analysis in helical tomotherapy based image-guided radiation therapy treatments

The clinical margins used in this hospital are adequate enough for sites H and N, lung, and brain, however, for CSI and pelvis the margins were found to be out of clinical margins.

Multiple regions-of-interest analysis of setup uncertainties for head-and-neck cancer radiotherapy.

The impact of daily setup variations on head-and-neck intensity-modulated radiation therapy.