PMID- 27061869 OWN - NLM STAT- MEDLINE DCOM- 20170210 LR - 20181202 IS - 1724-191X (Electronic) IS - 1120-1797 (Linking) VI - 32 IP - 3 DP - 2016 Mar TI - SBRT for prostate cancer: Challenges and features from a physicist prospective. PG - 479-84 LID - S1120-1797(16)30006-0 [pii] LID - 10.1016/j.ejmp.2016.03.011 [doi] AB - Emerging data are showing the safety and the efficacy of Stereotactic Body Radiation Therapy (SBRT) in prostate cancer management. In this context, the medical physicists are regularly involved to review the appropriateness of the adopted technology and to proactively study new solutions. From the physics point of view there are two major challenges in prostate SBRT: (1) mitigation of geometrical uncertainty and (2) generation of highly conformal dose distributions that maximally spare the OARs. Geometrical uncertainties have to be limited as much as possible in order to avoid the use of large PTV margins. Furthermore, advanced planning and delivery techniques are needed to generate maximally conformal dose distributions. In this non-systematic review the technology and the physics aspects of SBRT for prostate cancer were analyzed. In details, the aims were: (i) to describe the rationale of reducing the number of fractions (i.e. increasing the dose per fraction), (ii) to analyze the features to be accounted for performing an extreme hypo-fractionation scheme (>6-7Gy), and (iii) to describe technological solutions for treating in a safe way. The analysis of outcomes, toxicities, and other clinical aspects are not object of the present evaluation. CI - Copyright (c) 2016 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved. FAU - Mancosu, Pietro AU - Mancosu P AD - Humanitas Clinical and Research Hospital, Rozzano, Milano, Italy. Electronic address: pietro.mancosu@humanitas.it. FAU - Clemente, Stefania AU - Clemente S AD - Azienda Ospedaliera Universitaria Federico II Napoli, Italy. FAU - Landoni, Valeria AU - Landoni V AD - Istituto Nazionale Tumori Regina Elena, Roma, Italy. FAU - Ruggieri, Ruggero AU - Ruggieri R AD - Ospedale Sacro Cuore Don Calabria, Negrar, Verona, Italy. FAU - Alongi, Filippo AU - Alongi F AD - Ospedale Sacro Cuore Don Calabria, Negrar, Verona, Italy. FAU - Scorsetti, Marta AU - Scorsetti M AD - Humanitas Clinical and Research Hospital, Rozzano, Milano, Italy; Department of Biomedical Sciences, Humanitas University, Rozzano, Milano, Italy. FAU - Stasi, Michele AU - Stasi M AD - Azienda Ospedaliera Ordine Mauriziano di Torino, Torino, Italy. LA - eng PT - Journal Article PT - Review PT - Systematic Review DEP - 20160406 PL - Italy TA - Phys Med JT - Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) JID - 9302888 SB - IM MH - Dose Fractionation, Radiation MH - Health Physics MH - Humans MH - Male MH - Prostatic Neoplasms/*radiotherapy MH - Radiosurgery/*methods OTO - NOTNLM OT - Medical physics OT - Prostate OT - SABR OT - SBRT EDAT- 2016/04/12 06:00 MHDA- 2017/02/12 06:00 CRDT- 2016/04/11 06:00 PHST- 2015/12/01 00:00 [received] PHST- 2016/02/29 00:00 [revised] PHST- 2016/03/12 00:00 [accepted] PHST- 2016/04/11 06:00 [entrez] PHST- 2016/04/12 06:00 [pubmed] PHST- 2017/02/12 06:00 [medline] AID - S1120-1797(16)30006-0 [pii] AID - 10.1016/j.ejmp.2016.03.011 [doi] PST - ppublish SO - Phys Med. 2016 Mar;32(3):479-84. doi: 10.1016/j.ejmp.2016.03.011. Epub 2016 Apr 6.