Full metadata record
DC Field | Value | Language |
---|---|---|
dc.creator | Azcona-Armendariz, J.D. (Juan Diego) | - |
dc.creator | Barbes-Fernandez, B. (Benigno) | - |
dc.creator | Morán-Velasco, V. (Verónica) | - |
dc.creator | Burguete-Mas, F.J. (Francisco Javier) | - |
dc.date.accessioned | 2017-12-12T12:47:50Z | - |
dc.date.available | 2017-12-12T12:47:50Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Azcona-Armendáriz, J. (Juan Diego); Barbes-Fernandez, B. (Benigno); Morán-Velasco, V. (Verónica); et al. "Commissioning of small field size radiosurgery cones in a 6-MV flattening filter-free beam". Medical dosimetry. 42 (4), 2017, 282 - 288 | es |
dc.identifier.issn | 0958-3947 | - |
dc.identifier.uri | https://hdl.handle.net/10171/45018 | - |
dc.description.abstract | This study aimed to describe the commissioning of small field size radiosurgery cones in a 6-MV flattening filter free (FFF) beam and report our measured values. Four radiosurgery cones of diameters 5, 10, 12.5, and 15¿mm supplied by Elekta Medical were commissioned in a 6-MV FFF beam from an Elekta Versa linear accelerator. The extraction of a reference signal for measuring small fields in scanning mode is challenging. A transmission chamber was attached to the lower part of the collimators and used for percentage depth dose (PDD) and profile measurements in scanning mode with a stereotactic diode. Tissue-maximum ratios (TMR) and output factors (OF) for all collimators were measured with a stereotactic diode (IBA). TMR and the OF for the largest collimator were also acquired on a polystyrene phantom with a microionization chamber of 0.016¿cm3 volume (PTW Freiburg PinPoint 3D). Measured TMR with diode and PinPoint microionization chamber agreed very well with differences smaller than 1% for depths below 20¿cm, except for the smaller collimator, for which differences were always smaller than 2%. Calculated TMR were significantly different (up to 7%) from measured TMR. OF measured with diode and chamber showed a difference of 3.5%. The use of a transmission chamber allowed the measurement of the small-field dosimetric properties with a simple setup. The commissioning of radiosurgery cones in FFF beams has been performed with essentially the same procedures and recommended ... | - |
dc.language.iso | en | - |
dc.rights | info:eu-repo/semantics/openAccess | - |
dc.subject | Área de Medicina Clínica y Epidemiología | - |
dc.subject | Flattening filter free | - |
dc.subject | Radiosurgery | - |
dc.subject | Small fields | - |
dc.subject | Transmission chamber | - |
dc.title | Commissioning of small field size radiosurgery cones in a 6-MV flattening filter-free beam | - |
dc.type | info:eu-repo/semantics/article | - |
dc.relation.publisherversion | https://www.ncbi.nlm.nih.gov/pubmed/?term=28711480 | - |
dc.identifier.doi | 10.1016/j.meddos.2017.06.003 | - |
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