Evaluating the effects of metal artifacts on dose distribution of the pelvic region

Banaee, Nooshin; Barough, Mehdi Salehi; Asgari, Sepideh; Hosseinzadeh, Elham; Salimi, E.

doi:10.4103/jcrt.jcrt_786_19

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…It converts CT numbers to EDs using the created CT-ED curve. 15 The CT images of the CIRS thorax phantom with DICOM format were imported to Monaco TPS afterwards, and then using the automated contouring tools of the TPS, the external contour of the phantom which is the boundary between the treatment couch, air and the phantom was determined. Then, according to the instructions provided by the IAEA-TECDOC-1583, various dosimetric tests were performed, and considering the dose to water (D w ) conversion, 5 the dose calculations were done using the MC algorithm.…”

Section: Methodsmentioning

confidence: 99%

Evaluating the performance of automated external contouring tool on dose calculation of treatment planning system

Banaee,

Aeini,

Barough

2024

J Radiother Pract

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Introduction The main goal of radiation therapy is to eradicate all cancer cells and minimize the damage to healthy tissues around the tumour. Treatment planning systems are used to predict the outcome of the treatment in terms of dose distribution prior to the treatment. One of the most reliable dose calculation algorithms is Monte Carlo. The aim of this study is to evaluate the performance of automated external contouring tool on dose calculation using Monte Carlo algorithm. Materials and methods The external contour of thorax phantom was created by automated tools of Monaco treatment planning system, and then, the IAEA-TECDOC-1583 quality assurance tests were created. Then, the treatment plans were delivered to the phantom, and the dose was measured by the Farmer ionization chamber at specific points. The external contour was corrected according to the source surface distances (SSD) which are mentioned in TECDOC-1583, and the dose was re-calculated. Finally, a comparison was made between the results. Results Dosimetric tests of TECDOC-1583 showed the errors ranged from −2·8% to +2·5%. In case of editing external contour and omitting fluctuations, the errors were decreased. The comparisons indicated that the most significant variation occurred in test 4 and the least changes were related to the tests 1 and 3. Conclusions The results of the study showed that the fluctuations of the external contour affect the calculated volume of the phantom and thus the dose. In order to obtain correct results, automated external contouring tools should be used with the correct instructions and re-checked before treatment planning.

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Section: Methodsmentioning

confidence: 99%

Evaluating the performance of automated external contouring tool on dose calculation of treatment planning system

Banaee,

Aeini,

Barough

2024

J Radiother Pract

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Stereotactic Body Radiation Therapy (SBRT) in prostate cancer in the presence of hip prosthesis – is it a contraindication? A narrative review

Dube,

Pareek,

Barthwal

et al. 2024

BMC Urol

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Hip replacement is a common orthopedic surgery in the aging population. With the rising incidence of prostate cancer, metallic hip prosthetics can cause considerable beam hardening and streak artifacts, leading to difficulty in identifying the target volumes and planning process for radiation treatment. The growing use of Stereotactic Body Radiation Therapy (SBRT) to treat prostate cancer is now well established. However, the use of this treatment modality in the presence of a hip prosthesis is poorly understood. There is enough literature on planning for external beam radiation treatment without any difficulties in the presence of hip prosthesis with conventional or Hypofractionated treatment. However, there is a shortage of literature on the impact of the prosthesis in SBRT planning, and there is a need for further understanding and measures to mitigate the obstacles in planning for SBRT in the presence of hip prosthesis. We present our review of the intricacies that need to be understood while considering SBRT in the presence of hip prostheses in prostate cancer treatment.

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Research Paperevaluating the Performance of Automated External Contouring Tool on Dose Calculation of Treatment Planning System

Aeini

Banaee

2022

SSRN Journal

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Evaluating the effects of metal artifacts on dose distribution of the pelvic region

Cited by 3 publications

References 1 publication

Evaluating the performance of automated external contouring tool on dose calculation of treatment planning system

Evaluating the performance of automated external contouring tool on dose calculation of treatment planning system

Stereotactic Body Radiation Therapy (SBRT) in prostate cancer in the presence of hip prosthesis – is it a contraindication? A narrative review

Research Paperevaluating the Performance of Automated External Contouring Tool on Dose Calculation of Treatment Planning System

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