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Utility of a skin marker–less setup procedure using surface-guided imaging: a comparison with the traditional laser-based setup in extremity irradiation
This study aimed to assess the feasibility of a skin marker–less patient setup using a surface-guided radiotherapy (SGRT) system for extremity...
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Comparison of patient setup accuracy for optical surface-guided and X-ray-guided imaging with respect to the impact on intracranial stereotactic radiotherapy
PurposeThe objective of this work is to estimate the patient positioning accuracy of a surface-guided radiation therapy (SGRT) system using an...
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Noninvasive inter- and intrafractional motion control in ultrahypofractionated radiation therapy of prostate cancer using RayPilot HypoCath™—a substitute for gold fiducial-based IGRT?
PurposeIn ultrahypofractionated radiation concepts, managing of intrafractional motion is mandatory because tighter margins are used and random...
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Individual 3D-printed fixation masks for radiotherapy: first clinical experiences
PurposeTo show the feasibility of 3D-printed fixation masks for whole brain radiation therapy in a clinical setting and perform a first comparison to...
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Assessment and validation of glottic motion using cone-beam CT and real-time cine MRI
PurposeThis study aimed to assess the margin for the planning target volume (PTV) using the Van Herk formula. We then validated the proposed margin...
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Adaptive radiotherapy and the dosimetric impact of inter- and intrafractional motion on the planning target volume for prostate cancer patients
PurposeTo investigate the dosimetric influence of daily interfractional (inter) setup errors and intrafractional (intra) target motion on the...
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Quality requirements for MRI simulation in cranial stereotactic radiotherapy: a guideline from the German Taskforce “Imaging in Stereotactic Radiotherapy”
Accurate Magnetic Resonance Imaging (MRI) simulation is fundamental for high-precision stereotactic radiosurgery and fractionated stereotactic...
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First clinical experience with a novel, mobile cone-beam CT system for treatment quality assurance in brachytherapy
Background and purposeOn-site cone-beam computed tomography (CBCT) has gained in importance in adaptive brachytherapy during recent years. Besides...
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Highly hypofractionated intensity-modulated radiation therapy for nonmetastatic prostate cancer with a simultaneous integrated boost to intraprostatic lesions: a planning study
PurposeThe purpose of this planning study was to develop an acceptable technique for highly hypofractionated intensity-modulated radiation therapy...
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Comprehensive Treatment Uncertainty Analysis and PTV Margin Estimation for Fiducial Tracking in Robotic Liver Stereotactic Body Radiation Therapy
ObjectiveThis study aims to quantify the uncertainties of CyberKnife Synchrony fiducial tracking for liver stereotactic body radiation therapy (SBRT)...
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Improving CBCT image quality to the CT level using RegGAN in esophageal cancer adaptive radiotherapy
ObjectiveThis study aimed to improve the image quality and CT Hounsfield unit accuracy of daily cone-beam computed tomography (CBCT) using...
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A retrospective comparison of two different immobilization systems for radiotherapy of extremity soft tissue sarcomas and its influence on CTV-PTV margin
BackgroundOn account of extremity wide range of movements and difficulty of reproducibility during irradiation of extremity sarcomas, assorted...
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Head and neck radiotherapy on the MR linac: a multicenter planning challenge amongst MRIdian platform users
PurposePurpose of this study is to evaluate plan quality on the MRIdian (Viewray Inc., Oakwood Village, OH, USA) system for head and neck cancer...
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Stereotactic radiosurgery for orbital cavernous venous malformation: a single center’s experience for 15 years
BackgroundStereotactic radiosurgery such as Gamma Knife radiosurgery (GKRS) has been shown to have a good treatment effect for orbital cavernous...
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Analysis of setup uncertainties and determine the variation of the clinical target volume (CTV) to planning target volume (PTV) margin for various tumor sites treated with three-dimensional IGRT couch using KV-CBCT
ObjectiveThe aim of this study was to determine the variation of patient setup uncertainties and clinical target volume (CTV) to planning target...
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Creation, evolution, and future challenges of ion beam therapy from a medical physicist’s viewpoint (Part 2). Chapter 2. Biophysical model, treatment planning system and image guided radiotherapy
When an ion beam penetrates deeply into the body, its kinetic energy decreases, and its biological effect increases due to the change of the beam...
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Hybrid volumetric modulated arc therapy for hypofractionated radiotherapy of breast cancer: a treatment planning study
PurposeThis study aims to evaluate the best possible practice using hybrid volumetric modulated arc therapy (H-VMAT) for hypofractionated radiation...
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Motion monitoring during a course of lung radiotherapy with anchored electromagnetic transponders
PurposeAnchored electromagnetic transponders for tumor motion monitoring during lung radiotherapy were clinically evaluated. First, intrafractional...
