A phantom based evaluation of the clinical imaging performance of electronic portal imaging devices.
Detector
EPID
Image quality
Phantom
QC-3V
Journal
Heliyon
ISSN: 2405-8440
Titre abrégé: Heliyon
Pays: England
ID NLM: 101672560
Informations de publication
Date de publication:
Oct 2023
Oct 2023
Historique:
received:
08
03
2023
revised:
14
10
2023
accepted:
16
10
2023
medline:
2
11
2023
pubmed:
2
11
2023
entrez:
2
11
2023
Statut:
epublish
Résumé
In this study an evaluation of the imaging performance of an electronic portal imaging device (EPID) is presented. The evaluation performed employing the QC-3V image quality phantom. An EPID system of a 6 MV LINAC, was used to obtain images of a QC-3V EPID phantom. The X-ray source to phantom distance was 100 cm and the field size was 15x15 cm The CTF curves were found comparable to each other. The lowest values were measured at 2 MU and 200 MU/min. Concerning the NPS and NNPS graphs it was found that the values decrease up to approximately 0.3 lp/mm and demonstrate a white noise shape afterwards. SNFR values were found reducing with spatial frequency. Highest CNR were found between the region 7 and 11 of the phantom. The influence of MU and DR on EPID performance were investigated. Image quality was assessed using the QC-3V phantom. The presented results can lead to image quality amelioration and act supportively to current image quality control routine protocols.
Identifiants
pubmed: 37916082
doi: 10.1016/j.heliyon.2023.e21116
pii: S2405-8440(23)08324-X
pmc: PMC10616349
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e21116Informations de copyright
© 2023 The Authors.
Déclaration de conflit d'intérêts
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Anastasios Episkopakis is an employee of Elekta Limited.
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