Gernot Echner
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View article: A dynamic anthropomorphic phantom for end‐to‐end testing in image‐ and surface‐guided adaptive radiotherapy
A dynamic anthropomorphic phantom for end‐to‐end testing in image‐ and surface‐guided adaptive radiotherapy Open
Background Respiratory and digestive motion can compromise the accuracy of radiotherapy (RT), affecting tumor targeting and healthy tissue sparing. Current phantoms often fail to replicate complex organ movements and lack compatibility wit…
View article: Experimental validation of a FLUKA Monte Carlo simulation for carbon‐ion radiotherapy monitoring via secondary ion tracking
Experimental validation of a FLUKA Monte Carlo simulation for carbon‐ion radiotherapy monitoring via secondary ion tracking Open
Background In‐vivo monitoring methods of carbon ion radiotherapy (CIRT) includes explorations of nuclear reaction products generated by carbon‐ion beams interacting with patient tissues. Our research group focuses on in‐vivo monitoring of …
View article: An in-vivo treatment monitoring system for ion-beam radiotherapy based on 28 Timepix3 detectors
An in-vivo treatment monitoring system for ion-beam radiotherapy based on 28 Timepix3 detectors Open
Ion-beam radiotherapy is an advanced cancer treatment modality offering steep dose gradients and a high biological effectiveness. These gradients make the therapy vulnerable to patient-setup and anatomical changes between treatment fractio…
View article: An essentially radiation‐transparent body coil integrated with a patient rotation system for MR‐guided particle therapy
An essentially radiation‐transparent body coil integrated with a patient rotation system for MR‐guided particle therapy Open
Background The pursuit of adaptive radiotherapy using MR imaging for better precision in patient positioning puts stringent demands on the hardware components of the MR scanner. Particularly in particle therapy, the dose distribution and t…
View article: A phantom to simulate organ motion and its effect on dose distribution in carbon ion therapy for pancreatic cancer
A phantom to simulate organ motion and its effect on dose distribution in carbon ion therapy for pancreatic cancer Open
Objective . Carbon ion radiotherapy is a promising radiation technique for malignancies like pancreatic cancer. However, organs’ motion imposes challenges for achieving homogeneous dose delivery. In this study, an anthropomorphic P ancreas…
View article: Compliance of volunteers in a fully-enclosed patient rotation system for MR-guided radiation therapy – a prospective study
Compliance of volunteers in a fully-enclosed patient rotation system for MR-guided radiation therapy – a prospective study Open
Background Particle therapy makes a noteworthy contribution in the treatment of tumor diseases. In order to be able to irradiate from different angles, usually expensive, complex and large gantries are used. Instead rotating the beam via a…
View article: Development and characterization of a versatile mini‐beam collimator for pre‐clinical photon beam irradiation
Development and characterization of a versatile mini‐beam collimator for pre‐clinical photon beam irradiation Open
Background Interest in spatial fractionation radiotherapy has exponentially increased over the last decade as a significant reduction of healthy tissue toxicity was observed by mini‐beam irradiation. Published studies, however, mostly use …
View article: Reattachable fiducial skin marker for automatic multimodality registration
Reattachable fiducial skin marker for automatic multimodality registration Open
Purpose Fusing image information has become increasingly important for optimal diagnosis and treatment of the patient. Despite intensive research towards markerless registration approaches, fiducial marker-based methods remain the default …
View article: Detecting perturbations of a radiation field inside a head‐sized phantom exposed to therapeutic carbon‐ion beams through charged‐fragment tracking
Detecting perturbations of a radiation field inside a head‐sized phantom exposed to therapeutic carbon‐ion beams through charged‐fragment tracking Open
Purpose Noninvasive methods to monitor carbon‐ion beams in patients are desired to fully exploit the advantages of carbon‐ion radiotherapy. Prompt secondary ions produced in nuclear fragmentations of carbon ions are of particular interest …
View article: Investigation of Suitable Detection Angles for Carbon-Ion Radiotherapy Monitoring in Depth by Means of Secondary-Ion Tracking
Investigation of Suitable Detection Angles for Carbon-Ion Radiotherapy Monitoring in Depth by Means of Secondary-Ion Tracking Open
The dose conformity of carbon-ion beam radiotherapy, which allows the reduction of the dose deposition in healthy tissue and the escalation of the dose to the tumor, is associated with a high sensitivity to anatomical changes during and be…
View article: Technical Note: ADAM PETer – An anthropomorphic, deformable and multimodality pelvis phantom with positron emission tomography extension for radiotherapy
Technical Note: ADAM PETer – An anthropomorphic, deformable and multimodality pelvis phantom with positron emission tomography extension for radiotherapy Open
Objective To develop an a nthropomorphic, d eformable a nd m ultimodal pelvis phantom with p ositron e mission t omography e xtension for r adiotherapy (ADAM PETer). Methods The design of ADAM PETer was based on our previous pelvis phantom…
View article: The ADAM-pelvis phantom—an anthropomorphic, deformable and multimodal phantom for MRgRT
The ADAM-pelvis phantom—an anthropomorphic, deformable and multimodal phantom for MRgRT Open
Applicability and accuracy of the rapidly developing tools and workflows for image-guided radiotherapy need to be validated under realistic treatment-like conditions. We present the construction of the ADAM-pelvis phantom, an anthropomorph…
View article: 4DMRI-based analysis of inter— and intrafractional pancreas motion and deformation with different immobilization devices
4DMRI-based analysis of inter— and intrafractional pancreas motion and deformation with different immobilization devices Open
Time-resolved magnetic resonance imaging (4DMRI) provides spatial motion information with high soft-tissue contrast. This study exploits the potential of 4DMRI by investigation of inter- and intrafractional pancreas motion and deformation …