Dose Distribution of Photon Beam by  Siemens Linear Accelerator

Xhafa, Besim; Mulaj, Tatjana; Hodolli, Gëzim; Nafezi, Gazmend

doi:10.4236/ijmpcero.2014.31011

Cited by 9 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The INO OF shows an energy dependence in the high (LET) region of the Bragg peak for protons as well as between the 6 and 15 MV X-ray beams. The sensitivities measured for the fibre at 6 MV and 15 MV in dB/m/MU differs ( Figure 4 b), where 6 MV indicates a higher sensitivity based on MU delivered which is to be expected based on relative depths of dmax in clinical photon beams [ 31 ]. A reversal in the sensitivity comparison was observed after conversion from MU to dose in Gy (dB/m/Gy) ( Figure 4 b inset or Table 1 and Table 2 ).…”

Section: Discussionmentioning

confidence: 95%

Dosimetric Application of Phosphorus Doped Fibre for X-ray and Proton Therapy

Olusoji

Penner

Bélanger-Champagne

et al. 2021

Sensors

View full text Add to dashboard Cite

Phosphorous-doped silica optical fibres with a core diameter of 4 µm were tested in X-ray and proton fields for application in cancer therapy dosimetry. Specifically, the radiation-induced attenuation was investigated in terms of linearity in deposited dose in 15 MV and 6 MV photons and 74 MeV protons, as well as Bragg-peak detection along the proton track. Fibres were found to demonstrate linear relative dose response in both radiation modalities, but possible saturation did occur at the high linear energy transfer of the Bragg peak. This demonstrates the possibility to use these fibres as a relative dosimeter for radiation therapy applications.

show abstract

Section: Discussionmentioning

confidence: 95%

Dosimetric Application of Phosphorus Doped Fibre for X-ray and Proton Therapy

Olusoji

Penner

Bélanger-Champagne

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…As we can see from Figure 2, this rate is not constant, it is an increasing function mostly, because this part of graf. In Figure 2, decrease asymptotically to the X-axis, which means the function itself never touch it or the dose value never arrive the value zero [6].…”

Section: Methodsmentioning

confidence: 96%

The Gradient of γ-Rays Irradiation’s Energy and Its Use in Treatment of Cancer Diseases

Kastrati¹,

Nafezi²,

Shehi³

2016

IJMPCERO

Self Cite

View full text Add to dashboard Cite

The Ionising irradiations used mostly in the treatment of tumoral diseasses are: X, γ, β and e irradiations. The discussion will be about γ irradiations, produced in linear accelerator with photon energy 6 MV and 15 MV. It is important to know the absorption performance before and after the electronic equilibrium. This is a reason that we've used the function of dose gradient for irradiations γ. It represents the velocity of dose change as a function of depth in tissue. From skin to maximum dose value, the increase of G-function is more accentuated for γ-rays than for β-particles while after that the G-function decreasing is less sharp for γ-rays. Finally, we'll discuss about the advantages in terms of radiation protection of γ-rays used in radiotherapy.

show abstract

“…Determination of dosimetric characteristics of all radiation beams is important so that most appropriate set of treatment planning parameters is chosen. Dosimetry is vital element of treatment using radiation as all the treatment planning is based on data obtained during dosimetry [5]. To ensure that malignant part get the prescribed dose, it is essential to perform dose calculation by managing radiation beams which are characterized by various parameters in the treatment machine.…”

Section: Introductionmentioning

confidence: 99%

Computational Tool for Calculation of Tissue Air Ratio and Tissue Maximum Ratio in Radiation Dosimetry

Atiq

2019

CTBEB

View full text Add to dashboard Cite

The radiation therapy field is advancing continuously to achieve higher degrees of accuracy and efficiency. The purpose of this work is to enhance the efficiency of radiotherapy machine commissioning by applying computational tools to interpolate dosimetric quantities Tissue Air Ratio (TAR) and Tissue Maximum Ratio (TMR). Newton Divided Difference interpolation method was used to interpolate data between tabulated values. In order to shorten the commissioning time, technique of interpolation was used; in which calculation of dosimetric quantities were made for certain depths and field sizes with reasonable step size and remaining values at different depths and field sizes were obtained by interpolation. It was found that interpolated results considerably agree with the measured data and so this method could be used efficiently for interpolation of above mentioned dosimetric quantities. The data obtained by this technique is highly reliable and can fill the discrete set of tabulated data to make it continuous. The results obtained in this technique were in agreement with measured data and hence could be used as input data in radiotherapy treatment planning process. The interpolated results were well within accuracy limits and this method can significantly improve the efficiency of machine commissioning and resultantly improve treatment planning process.

show abstract

Dose Distribution of Photon Beam by Siemens Linear Accelerator

Cited by 9 publications

References 6 publications

Dosimetric Application of Phosphorus Doped Fibre for X-ray and Proton Therapy

Dosimetric Application of Phosphorus Doped Fibre for X-ray and Proton Therapy

The Gradient of γ-Rays Irradiation’s Energy and Its Use in Treatment of Cancer Diseases

Computational Tool for Calculation of Tissue Air Ratio and Tissue Maximum Ratio in Radiation Dosimetry

Contact Info

Product

Resources

About