PMID- 25168752 OWN - NLM STAT- MEDLINE DCOM- 20150320 LR - 20211021 IS - 1439-099X (Electronic) IS - 0179-7158 (Linking) VI - 191 IP - 1 DP - 2015 Jan TI - Clinical and dosimetric evaluation of RapidArc versus standard sliding window IMRT in the treatment of head and neck cancer. PG - 43-50 LID - 10.1007/s00066-014-0742-x [doi] AB - BACKGROUND: Several planning studies have already proven the substantial dosimetric advantages of RapidArc (RA) over standard intensity-modulated radiotherapy. We retrospectively compared RapidArc and standard sliding window IMRT (swIMRT) in locally advanced head and neck cancer, looking both at dosimetrics as well as toxicity and outcome. METHODS: CT datasets of 78 patients treated with swIMRT and 79 patients treated with RA were included. To compare the resulting dose distributions, the dose-volume parameters were evaluated for the planning target volumes (PTVs), clinical target volumes (CTVs), and organs at risk (OARs), and the number of MU were calculated. Acute toxicity was assessed by the Common Toxicity Criteria version 3.0. RESULTS: PTV coverage with the 95% isodose was slightly better for RA. Dose distribution has proven to be significantly more homogenous with RA and led to a reduction of 62% in MU with better OAR sparing. As for toxicity, more grade 3 mucositis and dysphagia was observed for swIMRT, though we observed more grade 3 dermatitis for RA. CONCLUSION: In our retrospective analysis, RA had better target coverage and better sparing of the OAR. Overall, the grade of acute toxicity was lower for RA than for swIMRT for the same types of tumor locations, except for the grade of dermatitis. FAU - Smet, Stephanie AU - Smet S AD - Department of Radiation Oncology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium, stephanie_smet99@hotmail.com. FAU - Lambrecht, Maarten AU - Lambrecht M FAU - Vanstraelen, Bianca AU - Vanstraelen B FAU - Nuyts, Sandra AU - Nuyts S LA - eng PT - Clinical Trial, Phase III PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial DEP - 20140829 PL - Germany TA - Strahlenther Onkol JT - Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] JID - 8603469 SB - IM MH - Belgium MH - *Body Burden MH - Comorbidity MH - Female MH - Head and Neck Neoplasms/*mortality/*radiotherapy MH - Humans MH - Male MH - Middle Aged MH - Prevalence MH - Radiation Injuries/*mortality MH - Radiometry/*statistics & numerical data MH - *Radiotherapy Dosage MH - Radiotherapy Planning, Computer-Assisted/statistics & numerical data MH - Radiotherapy, Intensity-Modulated/classification/*statistics & numerical data MH - Risk Factors MH - Survival Rate MH - Treatment Outcome EDAT- 2014/08/30 06:00 MHDA- 2015/03/21 06:00 CRDT- 2014/08/30 06:00 PHST- 2014/04/16 00:00 [received] PHST- 2014/07/07 00:00 [accepted] PHST- 2014/08/30 06:00 [entrez] PHST- 2014/08/30 06:00 [pubmed] PHST- 2015/03/21 06:00 [medline] AID - 10.1007/s00066-014-0742-x [doi] PST - ppublish SO - Strahlenther Onkol. 2015 Jan;191(1):43-50. doi: 10.1007/s00066-014-0742-x. Epub 2014 Aug 29.