PMID- 22534136 OWN - NLM STAT- MEDLINE DCOM- 20130429 LR - 20220310 IS - 1873-4022 (Electronic) IS - 1873-4022 (Linking) VI - 37 IP - 4 DP - 2012 Winter TI - Implant breast reconstruction followed by radiotherapy: can helical tomotherapy become a standard irradiation treatment? PG - 425-31 LID - S0958-3947(12)00064-7 [pii] LID - 10.1016/j.meddos.2012.03.006 [doi] AB - To evaluate the benefits and limitations of helical tomotherapy (HT) for loco-regional irradiation of patients after a mastectomy and immediate implant-based reconstruction. Ten breast cancer patients with retropectoral implants were randomly selected for this comparative study. Planning target volumes (PTVs) 1 (the volume between the skin and the implant, plus margin) and 2 (supraclavicular, infraclavicular, and internal mammary nodes, plus margin) were 50 Gy in 25 fractions using a standard technique and HT. The extracted dosimetric data were compared using a 2-tailed Wilcoxon matched-pair signed-rank test. Doses for PTV1 and PTV2 were significantly higher with HT (V95 of 98.91 and 97.91%, respectively) compared with the standard technique (77.46 and 72.91%, respectively). Similarly, the indexes of homogeneity were significantly greater with HT (p = 0.002). HT reduced ipsilateral lung volume that received >/=20 Gy (16.7 vs. 35%), and bilateral lungs (p = 0.01) and neighboring organs received doses that remained well below tolerance levels. The heart volume, which received 25 Gy, was negligible with both techniques. HT can achieve full target coverage while decreasing high doses to the heart and ipsilateral lung. However, the low doses to normal tissue volumes need to be reduced in future studies. CI - Copyright (c) 2012 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved. FAU - Massabeau, Carole AU - Massabeau C AD - Department of Radiation Oncology, Institut Curie, Paris, France. cmassabeau@hotmail.com FAU - Fournier-Bidoz, Nathalie AU - Fournier-Bidoz N FAU - Wakil, Georges AU - Wakil G FAU - Castro Pena, Pablo AU - Castro Pena P FAU - Viard, Romain AU - Viard R FAU - Zefkili, Sofia AU - Zefkili S FAU - Reyal, Fabien AU - Reyal F FAU - Campana, Francois AU - Campana F FAU - Fourquet, Alain AU - Fourquet A FAU - Kirova, Youlia M AU - Kirova YM LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20120424 PL - United States TA - Med Dosim JT - Medical dosimetry : official journal of the American Association of Medical Dosimetrists JID - 8908862 SB - IM MH - *Breast Implants MH - Breast Neoplasms/*therapy MH - Combined Modality Therapy MH - Female MH - Humans MH - Mammaplasty/*instrumentation/methods MH - Radiometry/*methods MH - Radiotherapy Dosage MH - Radiotherapy Planning, Computer-Assisted/*methods MH - Radiotherapy, Adjuvant/methods MH - Radiotherapy, Intensity-Modulated/*methods MH - Treatment Outcome EDAT- 2012/04/27 06:00 MHDA- 2013/04/30 06:00 CRDT- 2012/04/27 06:00 PHST- 2011/11/11 00:00 [received] PHST- 2012/02/24 00:00 [revised] PHST- 2012/03/15 00:00 [accepted] PHST- 2012/04/27 06:00 [entrez] PHST- 2012/04/27 06:00 [pubmed] PHST- 2013/04/30 06:00 [medline] AID - S0958-3947(12)00064-7 [pii] AID - 10.1016/j.meddos.2012.03.006 [doi] PST - ppublish SO - Med Dosim. 2012 Winter;37(4):425-31. doi: 10.1016/j.meddos.2012.03.006. Epub 2012 Apr 24.