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418305

Implementation of PTW 1600SRS detector array for multi-leaf collimator quality assurance: Picket Fence and Spoke Shot tests case study

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Last updated: 29 Mar 2025

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Abstract

Multi-Leaf Collimator is one of the most complex mechanical components of current medical linear accelerators which require more efficient and accurate quality assurance programs to be implemented. The main purpose of our work is to integrate a detector array to perform an objective analysis of classical MLC tests. A PTW SRS1600 array was sandwiched between upper and lower blocks of PMMA slabs. Two main mechanical tests, including picket fence and spoke shot, were designed in the treatment planning system on the acquired DICOM files of the measurement phantom. The sandwiched array is then irradiated under a VersaHD linac and the corresponding 2%/2mm and 1%/1mm GPR were acquired in the measurement week and the latter one. 2%/2mm is globally higher than 1%/1mm. For the spoke shot test, 2%/2mm decreases from the initial value at θ = 0˝ to the last angle at θ = 340˝ except for the 5mm aperture width measured the later week. For the 1%/1mm GPR criterion, all plots show a decreased value between θ = 200˝ and θ = 200˝ related to inaccurate MLC rotation. GPR-based picket fence shows a more stable variation of 2%/2mm for both 3mm and 5mm picket widths. For 3mm, a decreased value was observed at the central gap for both 2%/2mm and 1%/1mm, which disappears with a 5mm gap width. A detector array could be a beneficial approach for MLC QA, especially for objective analysis, performance reproducibility tracking, and system accuracy variation.

DOI

10.21608/jbaar.2025.418305

Keywords

Multi-Leaf Collimator, A PTW SRS1600 array, sandwiched array

Authors

First Name

M.

Last Name

Driouch

MiddleName

-

Affiliation

IBN SINA specialized clinic, Kenitra, Morocco/ 2 LPMS, Faculty of Sciences, Ibn tofail University, Kenitra, Morocco

Email

mustapha.driouch@uit.ac.ma

City

-

Orcid

0009-0006-8174-2509

First Name

Y.

Last Name

Adib

MiddleName

-

Affiliation

LPHE-MS, Faculty of Science, Mohammed V University, Rabat, Morocco

Email

-

City

-

Orcid

0009-0005-4473-0384

First Name

Adeb

Last Name

Almaamari

MiddleName

A.S.A.

Affiliation

Department of Radiotherapy, National Institute of Oncology, UHC Ibn Sina, Mohammed V University, Rabat, Morocco/ Faculty of Medicine, Mohammed V University, Rabat, Morocco

Email

adeebalmamari66@gmail.com

City

-

Orcid

0009-0006-8174-2509

First Name

M.

Last Name

Youssoufi

MiddleName

A.

Affiliation

Faculty of Medicine, Mohammed V University, Rabat, Morocco

Email

-

City

-

Orcid

0000-0002-7267-1706

First Name

E.

Last Name

Chakir

MiddleName

-

Affiliation

LPMS, Faculty of Sciences, Ibn tofail University, Kenitra, Morocco

Email

-

City

-

Orcid

0000-0002-1653-4635

First Name

E.

Last Name

Ibrahmi

MiddleName

Al

Affiliation

LPMS, Faculty of Sciences, Ibn tofail University, Kenitra, Morocco

Email

-

City

-

Orcid

0000-0003-1653-4635

First Name

H.

Last Name

Elkacemi

MiddleName

-

Affiliation

Department of Radiotherapy, National Institute of Oncology, UHC Ibn Sina, Mohammed V University, Rabat, Morocco/ Faculty of Medicine, Mohammed V University, Rabat, Morocco

Email

-

City

-

Orcid

0000-0001-8560-4935

First Name

T.

Last Name

Kebdani

MiddleName

-

Affiliation

Department of Radiotherapy, National Institute of Oncology, UHC Ibn Sina, Mohammed V University, Rabat, Morocco/ Faculty of Medicine, Mohammed V University, Rabat, Morocco

Email

-

City

-

Orcid

0000-0001-5272-9002

First Name

K.

Last Name

Hassouni

MiddleName

-

Affiliation

Department of Radiotherapy, National Institute of Oncology, UHC Ibn Sina, Mohammed V University, Rabat, Morocco/ Faculty of Medicine, Mohammed V University, Rabat, Morocco

Email

-

City

-

Orcid

-

Volume

11

Article Issue

1

Related Issue

53815

Issue Date

2025-03-01

Receive Date

2024-10-10

Publish Date

2025-03-19

Page Start

110

Page End

120

Print ISSN

2356-9174

Online ISSN

2356-9182

Article File

JBAAR_Volume 11_Issue 1_Pages 110-120.pdf

PDF . 795.0kB

Link

https://jbaar.journals.ekb.eg/article_418305.html

Detail API

http://journals.ekb.eg?_action=service&article_code=418305

Order

418,305

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

Implementation of PTW 1600SRS detector array for multi-leaf collimator quality assurance: Picket Fence and Spoke Shot tests case study

Details

Type

Article

Created At

29 Mar 2025