Verification and assessment of the PTV margin in the treatment of brain metastases with mono-fractionated radiosurgery - Egyptian Knowledge Bank

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Abstract

This study evaluated the margins between gross target volume (GTV) and planned target volume (PTV) for brain metastases treated using the stereotactic radiosurgery (SRS) technique.
Methods and Materials: 10 patients who received SRS treatment for brain metastases provided the setup data. To evaluate systematic and random errors, 30 cone beam computed tomography (CBCT) was evaluated. Following that, we used the Van Herk formula to calculate and evaluate our optimal PTV to obtain a result comparable to other studies without exceeding tolerable values. Results: We found that the proper margin for single-fraction SRS cases in 10 brain metastases was about 2 mm for our department in this study. Setup margins obtained were X1.23, Y 0.93, and Z 1.04 mm translation, and 1.56, 1.36, 1.47 in Pitch, Roll, and Yaw in rotation.
Conclusion: Treatment of brain metastases with SRS requires an optimal PTV to ensure better coverage and normal brain sparing. A PTV margin of 2 mm is an optimal margin in our department.

DOI

10.21608/jbaar.2024.361548

Keywords

brain metastases, planned target volume, stereotactic radiosurgery, Cone beam computed tomography

Authors

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First Name

Adeb

Last Name

Almaamari

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A.S.A.

Affiliation

Department: of Clinical epidemiology and medico-surgical sciences, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco./ National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

Email

adeebalmamari66@gmail.com

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M.

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Droiuch

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Clinique Spécialisée Ibn Sina, Kenitra, Morocco./ Faculté des sciencesUniversité Ibn Tofail Kénitra, Morocco.

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M

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Youssoufi

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A.

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National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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M.

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Bougtib

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Centre Hospitalier Universitaire Hassan II, Fes, Morocco.

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Y.

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Adib

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National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco./ University Mohammed V, Faculty of Sciences, Rabat, Morocco.

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N.

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Gouaazzab

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-

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National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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-

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S.

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Boutayeb

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-

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National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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-

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A.

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Lachgar

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-

Affiliation

Department: of Clinical epidemiology and medico-surgical sciences, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco./ National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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-

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H.

Last Name

Elkacemi

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-

Affiliation

Department: of Clinical epidemiology and medico-surgical sciences, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco./ National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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-

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-

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-

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First Name

T.

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Kebdani

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-

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Department: of Clinical epidemiology and medico-surgical sciences, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco./ National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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-

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-

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-

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k.

Last Name

Hassouni

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-

Affiliation

Department: of Clinical epidemiology and medico-surgical sciences, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco./ National Institute of Oncology, Department of Radiotherapy, Rabat, Morocco.

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-

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-

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Volume

10

Article Issue

2

Related Issue

47561

Issue Date

2024-06-01

Receive Date

2024-03-08

Publish Date

2024-06-01

Page Start

221

Page End

227

Print ISSN

2356-9174

Online ISSN

2356-9182

Article File

JBAAR_Volume 10_Issue 2_Pages 221-227.pdf

PDF . 970.3kB

Link

https://jbaar.journals.ekb.eg/article_361548.html

Detail API

https://jbaar.journals.ekb.eg/service?article_code=361548

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361,548

Type

Original Article

Type Code

1,272

Publication Type

Journal

Publication Title

Journal of Bioscience and Applied Research

Publication Link

https://jbaar.journals.ekb.eg/

MainTitle

Verification and assessment of the PTV margin in the treatment of brain metastases with mono-fractionated radiosurgery

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