@article {96, title = {Data from: Intensity-modulated proton therapy decreases dose to organs at risk in low-grade glioma patients: results of a multicentric in silico ROCOCO trial}, year = {2018}, publisher = {CancerData}, abstract = {

Background and Purpose

Patients with low-grade glioma (LGG) have a prolonged survival expectancy due to better discriminative tumor classification and multimodal treatment. Consequently, long-term treatment toxicity gains importance. Contemporary radiotherapy techniques such as intensity-modulated radiotherapy (IMRT), volumetric modulated arc therapy (VMAT), Tomotherapy (TOMO) and intensity-modulated proton therapy (IMPT) enable high-dose irradiation of the target but they differ regarding delivered dose to organs at risk (OARs). The aim of this comparative in silico study was to determine these dosimetric differences in delivered doses.

Material and Methods

Imaging datasets of twenty-five LGG patients having undergone postoperative radiotherapy were included. For each of these patients, in silico treatment plans to a total dose of 50.4Gy to the target volume were generated for the four treatment modalities investigated (i.e., IMRT, VMAT, TOMO, IMPT). Resulting treatment plans were analyzed regarding dose to target and surrounding OARs comparing IMRT, TOMO and IMPT to VMAT.

Results

In total 100 treatment plans (4 per patient) were analyzed. Compared to VMAT the IMPT mean dose (Dmean) for 9 out of 10 (90\%) OARs was statistically significantly (p\<0.02) reduced, for TOMO this was true in 3/10 (30\%) patients and for 1/10 (10\%) patients for IMRT. IMPT was the prime modality reducing dose to the OARs followed by TOMO.

Discussion

The low dose volume to the majority of OARs was significantly reduced when using IMPT compared to VMAT. Whether this will lead to a significant reduction in neurocognitive decline and improved quality of life is to be determined in carefully designed future clinical trials.

}, doi = {10.17195/candat.2018.05.1}, author = {Danielle Eekers and Erik Roelofs and Macarena Cubillos-Mesias and Charles Ni{\"e}l and Robert Jan Smeenk and Ann Hoeben and Andre W.H. Minken and Johannes H.A.M. Kaanders and Philippe Lambin and Esther G.C. Troost} } @article {65, title = {Data from: Benefit of particle therapy in re-irradiation of head and neck patients. Results of a multicenter in silico ROCOCO trial}, year = {2016}, abstract = {

Background and Purpose

In this multicentric in silico trial we compared photon, proton, and carbon ion radiotherapy plans for re-irradiation of patients with squamous cell carcinoma of the head and neck (HNSCC) regarding dose to tumour and doses to surrounding organs at risk (OARs).

Material and Methods

Twenty-five HNSCC patients with a second new or recurrent cancer after previous irradiation (70 Gy) were included. Intensity-modulated proton therapy (IMPT) and ion therapy (IMIT) re-irradiation plans to, again, a total dose of 70 Gy were compared to photon therapy delivered with volumetric modulated arc therapy (VMAT).

Results

When comparing IMIT and IMPT to VMAT the mean dose to all 22 OARs was statistically significantly reduced for IMIT and to 15 out of 22 OARs (68\%) using IMPT. The maximum dose to 2\% volume (D2) of the brainstem and spinal cord were statistically significantly reduced using IMPT and IMIT compared to VMAT. The data are available on www.cancerdata.org.

Conclusions

In this ROCOCO in silico trial, a reduction in mean dose to OARs was achieved using particle therapy compared to photons in the re-irradiation of HNSCC. There was a dosimetric benefit favouring carbon-ions above proton therapy. These dose reductions may potentially translate into lower severe complication rates related to the re-irradiation.

}, doi = {10.17195/candat.2016.04.2}, author = {Danielle Eekers and Erik Roelofs and Urszula Jelen and Maura Kirk and Marlies Granzier and Filippo Ammazzalorso and Peter H. Ahn and Geert O.R.J Janssens and Frank Hoebers and Tobias Friedmann and Timothy Solberg and Sean Walsh and Esther G C Troost and Johannes H.A.M. Kaanders and Philippe Lambin} } @article {57, title = {Data from: Development and Evaluation of an Online Three-Level Proton vs Photon Decision Support Prototype for Head and Neck Cancer - Comparison of Dose, Toxicity and Cost-Effectiveness}, year = {2015}, month = {10/2015}, publisher = {CancerData}, abstract = {

This dataset supports the publication by Cheng et al, entitled "Development and Evaluation of an Online Three-Level Proton vs Photon Decision Support Prototype for Head and Neck Cancer - Comparison of Dose, Toxicity and Cost-Effectiveness". It\ was used to evaluate the PRODECIS decision support prototype\ for online evaluation of eligiblilty for proton therapy using Dutch guidelines.\ 

The Head and Neck test dataset was based on the ROCOCO dataset by HP van der Laan, as described in doi:10.3109/0284186X.2012.692885.

}, keywords = {cancer, decision support, model-based, oncology, proton therapy, radiotherapy planning}, doi = {10.17195/candat.2015.10.5}, url = {https://www.cancerdata.org/resource/doi:10.17195/candat.2015.10.5}, author = {Qing Cheng and Erik Roelofs and Bram Ramaekers and Danielle Eekers and Johan van Soest and Tim Lustberg and Frank Hoebers and Hans Paul van der Laan and Erik Korevaar and Andr{\'e} Dekker and Johannes Langendijk and Philippe Lambin} } Error | CancerData.org

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