Effect of patient size on image quality in radiotherapy kV planar verification imaging: a phantom study.
image interpretation
image-guided radiotherapy
phantoms
waist circumference
Journal
Journal of medical radiation sciences
ISSN: 2051-3909
Titre abrégé: J Med Radiat Sci
Pays: United States
ID NLM: 101620352
Informations de publication
Date de publication:
Mar 2020
Mar 2020
Historique:
received:
17
04
2019
revised:
08
08
2019
accepted:
10
08
2019
pubmed:
18
10
2019
medline:
15
12
2020
entrez:
18
10
2019
Statut:
ppublish
Résumé
This study aimed to determine a maximal pelvic separation and waist circumference in pelvic patients to guide radiation therapists in acquiring kilovoltage (kV) planar images of acceptable quality for treatment verification. A pelvic anthropomorphic phantom modified with different bolus thicknesses was imaged at various default kV exposure settings. Radiation therapists rated image quality and acceptance/rejection of these images for treatment verification. Sixteen radiation therapists participated in the study. Image quality was inversely proportional to phantom size. AP and lateral kV images were acceptable for treatment verification up to a waist circumference of 143 cm. Exposure settings for kV image verification of large patients should be individualised to avoid unnecessary patient radiation dose through repeated imaging.
Identifiants
pubmed: 31621206
doi: 10.1002/jmrs.355
pmc: PMC7063253
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
34-42Informations de copyright
© 2019 The Authors. Journal of Medical Radiation Sciences published by John Wiley & Sons Australia, Ltd on behalf of Australian Society of Medical Imaging and Radiation Therapy and New Zealand Institute of Medical Radiation Technology.
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