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N0: 43 patients, N1-Nx: 2 patients, all M0), with initial PSA of 10.0 \u00b1 3.0 ng\/mL, were treated with RapidArc in a feasibility study. All patients were treated with single arc using 6MV photons. Dose prescription ranged between 76 (7 patients) and 78 Gy (38 patients) in 2Gy\/fraction. Plan quality was assessed by means of Dose Volume Histogram (DVH) analysis. Technical parameters of arcs and pre-treatment quality assurance results (Gamma Agreement Index, GAI) are reported to describe delivery features. Early toxicity was scored (according to the Common Terminology Criteria of Adverse Effects scale, CTCAE, scale) at the end of treatment together with biochemical outcome (PSA).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>From DVH data, target coverage was fulfilling planning objectives: V<jats:sub>95%<\/jats:sub> was in average higher than 98% and V<jats:sub>107%<\/jats:sub>~0.0% (D<jats:sub>2%<\/jats:sub>~104.0% in average). Homogeneity D<jats:sub>5%<\/jats:sub>-D<jats:sub>95%<\/jats:sub> ranged between 6.2 \u00b1 1.0% to 6.7 \u00b1 1.3%. For rectum, all planning objectives were largely met (e.g. V<jats:sub>70Gy<\/jats:sub> = 10.7 \u00b1 5.5% against an objective of &lt; 25%) similarly for bladder (e.g. D<jats:sub>2%<\/jats:sub> = 79.4 \u00b1 1.2Gy against an objective of 80.0Gy). Maximum dose to femurs was D<jats:sub>2%<\/jats:sub> = 36.7 \u00b1 5.4Gy against an objective of 47Gy. Monitor Units resulted: MU\/Gy = 239 \u00b1 37. Average beam on time was 1.24 \u00b1 0.0 minutes. Pre-treatment GAI resulted in 98.1 \u00b1 1.1%. Clinical data were recorded as PSA at 6 weeks after RT, with median values of 0.4 \u00b1 0.4 ng\/mL. Concerning acute toxicity, no patient showed grade 2-3 rectal toxicity; 5\/42 (12%) patients experienced grade 2 dysuria; 18\/41 (44%) patients preserved complete or partial erectile function.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>RapidArc proved to be a safe, qualitative and advantageous treatment modality for prostate cancer.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1748-717x-5-54","type":"journal-article","created":{"date-parts":[[2010,6,16]],"date-time":"2010-06-16T20:32:40Z","timestamp":1276720360000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Early clinical experience of radiotherapy of prostate cancer with volumetric modulated arc therapy"],"prefix":"10.1186","volume":"5","author":[{"given":"Gianfranco A","family":"Pesce","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessandro","family":"Clivio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca","family":"Cozzi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giorgia","family":"Nicolini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonella","family":"Richetti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emanuela","family":"Salati","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariacarla","family":"Valli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eugenio","family":"Vanetti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonella","family":"Fogliata","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2010,6,16]]},"reference":[{"key":"260_CR1","unstructured":"NICER and FSO Statistics of Cancer Incidence: Switzerland 1983-2006[http:\/\/www.ti.ch\/tumori]"},{"key":"260_CR2","doi-asserted-by":"publisher","first-page":"310","DOI":"10.1118\/1.2818738","volume":"35","author":"K Otto","year":"2008","unstructured":"Otto K: Volumetric Modulated Arc Therapy: IMRT in a single arc. 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