- Détails du magazine
- Format
- Magazine
- eISSN
- 1898-0309
- Première publication
- 30 Dec 2008
- Période de publication
- 4 fois par an
- Langues
- Anglais

#### Chercher

#### Scientific Paper

Accès libre

#### The sensitivity of contact stresses in the mandibular premolar region to the shape of Zirconia dental implant: A 3D finite element study

Pages: 55 - 63

#### Résumé

#### Mots clés

- dental implant
- finite element method
- osseointegration
- stress analysis
- thread profile

Accès libre

#### Hybrid Monte Carlo source model: Advantages and deficiencies

Pages: 65 - 74

#### Résumé

Monte Carlo (MC) simulation is the gold standard for dose calculation. An accurate mathematical source model can be used for the radiation beams. Source models can consist of sub-sources or fewer sources with data that need to be measured. This can speed up treatment plan verification without the need for a full simulation of the radiation treatment machine.

^{2} to 40 × 40 cm^{2}.

#### Mots clés

- hybrid source model
- DOSXYZnrc
- Monte Carlo
- Elekta Synergy
- particle source model

#### Technical Note

Accès libre

#### Evaluation of jaws-only intensity modulated radiation therapy treatment plans using Octavius 4D system

Pages: 75 - 78

#### Résumé

#### Mots clés

- intensity-modulated radiation therapy (IMRT)
- jaws only IMRT (JO-IMRT)
- quality assurance (QA)
- Octavius 4D
- MapCHECK2

Accès libre

#### Open beam dosimetric characteristics of True Beam medical linear accelerator with flattening filter (WFF) and flattening filter free (FFF) beam

Pages: 79 - 89

#### Résumé

True Beam medical linear accelerator is capable of delivering flattening filter free (FFF) and with flattening filter (WFF) photon beams. True Beam linear accelerator is equipped with five photon beam energies (6 FFF, 6 WFF, 10 FFF, 10 WFF and 15 WFF) as well as six electron beam energies (6 MeV, 9 MeV, 12 MeV, 15 MeV and 18 MeV). The maximum dose rate for the 6 WFF, 10 WFF and 15 WFF is 600 MU/min, whereas 6 FFF has a maximum dose rate of 1400 MU/min and 10 FFF with a maximum dose rate of 2400 MU/min. In this report we discussed the open beam dosimetric characteristics of True Beam medical linear accelerator with FFF and WFF beam. All the dosimetric data (i.e. depth dose, cross-line profiles, diagonal profiles, output factors, MLC transmission, etc.) for 6 MV, 6 FFF, 10 MV, 10 FFF and 15 MV were measured and compared with the published data of the True Beam. Multiple detectors were used in order to obtain a consistent dataset. The measured data has a good consistency with the reference golden beam data. The measured beam quality index for all the beams are in good agreement with the published data. The percentage depth dose at 10 cm depth of all the available photon beams was within the tolerance of the Varian acceptance specification. The dosimetric data shows consistent and comparable results with the published data of other True Beam linear accelerators. The dosimetric data provide us an appreciated perception and consistent among the published data and may be used for future references.