Low modulated 6MV Flattening Filter Free Intensity Modulated Radiation Therapy (FFF-IMRT) for left breast treatments with Active Breath Coordinator$^{TM}$ (ABC): a feasibility study.

De Lucia P.A., Chieregato M., Galelli M., Ren Kaiser S., Bassetti C., Donadoni L., Huscher A., Villa I. S., Bignardi M.

V - Biofisica e fisica medica
Aula 32C-2 - Giovedì 20 h 09:00 - 13:00
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The higher dose rate in FFF LINAC modality allows shorter treatment time, an important parameter for breath-holding patients. A 6MV three-fields low modulated FFF-IMRT technique is proposed and compared to standard two-tangential beams conformal radiotherapy (3D-CR) for 22 left breast breath-holding patients. For comparison, 14 indicators were examined by a paired Student T-test ($p 0.05$). FFF-IMRT plans show better coverage, high doses (hot spots) control and conformity. All the FFF-IMRT plans are faster, reducing the mean apnoeas number by two. In conclusion, this technique delivers an equivalent dose distribution, reduces treatment time and reduces number of apnoeas, improving patient comfort.

Società Italiana di Fisica - Via Saragozza 12 40123 Bologna P.IVA 00308310374 | credits