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Spots Global Cancer Trial Database for The MR-Linac Technical Feasibility Protocol

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Trial Identification

Brief Title: The MR-Linac Technical Feasibility Protocol

Official Title: The MR-Linac Technical Feasibility Protocol For Development of MR-guided Adaptive RadiationTherapy

Study ID: NCT04351204

Interventions

radiotherapy

Study Description

Brief Summary: Radiation therapy is predominantly based on a Computed Tomography (CT) scan obtained during the treatment planning phase. During the course of radiotherapy, however, both the tumor and organs at risk (OAR) are variable in position, shape and size between fractions, and during beam delivery within one treatment fraction. Around the clinical target volume (CTV) a safety margin (Planning Target Volume, PTV) is created to account for these geometric uncertainties to ensure that the tumor receives the prescribed dose. Direct integration of imaging at the linear accelerator enables daily monitoring of patient positioning, tumor position, and alterations in patient anatomy. Image guided radiotherapy (IGRT) enables the detection and immediate correction of such deviations and increases the precision of delivery. Adaptive radiotherapy has become an important strategy for serially modifying dose distributions in a manner that can substantially reduce OAR dose and subsequent toxicity, while maintaining adequate target coverage. Current adaptive protocols rely upon a standard CT-based workflow and (cone-beam) CT-based image guidance. Magnetic Resonance Imaging (MRI) has superior soft-tissue contrast over CT and seems a very promising modality to integrate in the radiation treatment process, facilitating better visualization of the tumor and OAR during treatment.

Detailed Description: The proposed protocol aims to determine feasibility of multiple new techniques and software for MR-guided adaptive radiation therapy. For each proposed technique feasibility has to be determined individually. A secondary aim is to prospectively collect data from cohorts of patients treated at the MRL and report on acute toxicity. By including multiple parallel cohorts, the protocol will accelerate the technical development of MR-guided adaptive radiotherapy and the evidence-based introduction of the MRL into clinical practice.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Netherlands Cancer Institute, Amsterdam, , Netherlands

Contact Details

Name: Marlies Nowee, MD, PhD

Affiliation: The Netherlands Cancer Institute

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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