Dosimetry on first clinical dark-field chest radiography.
TLD
X-ray dark-field
dosimetry
radiation dose
Journal
Medical physics
ISSN: 2473-4209
Titre abrégé: Med Phys
Pays: United States
ID NLM: 0425746
Informations de publication
Date de publication:
Oct 2021
Oct 2021
Historique:
revised:
02
06
2021
received:
28
01
2021
accepted:
30
06
2021
pubmed:
28
7
2021
medline:
6
11
2021
entrez:
27
7
2021
Statut:
ppublish
Résumé
The purpose of this study was to evaluate the dose characteristic for patient examinations at the first clinical X-ray dark-field chest radiography system and to determine whether the effective patient dose is within a clinically acceptable dose range. A clinical setup for grating-based dark-field chest radiography was constructed and commissioned, operating at a tube voltage of 70 kVp. Thermoluminescent dosimeter (TLD) measurements were conducted using an anthropomorphic phantom modeling the reference person to obtain a conversion coefficient relating dose area product (DAP) to effective patient dose at the dark-field system. For 92 patients, the DAP values for posterior-anterior measurements were collected at the dark-field system. Using the previously determined conversion coefficient, the effective dose was calculated. A reference person, modeled by an anthropomorphic phantom, receives an effective dose of 35 µSv. For the examined patients, a mean effective dose of 39 µSv was found. The effective dose at the clinical dark-field radiography system, generating both attenuation and dark-field images, is within the range of reported standard dose values for chest radiography.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
6152-6159Subventions
Organisme : EC | European Research Council (ERC)
ID : AdG 695045
Organisme : Deutsche Forschungsgemeinschaft (DFG)
ID : GRK 2274
Organisme : WOA Institution: Technische Universitat Munchen
Commentaires et corrections
Type : ErratumIn
Informations de copyright
© 2021 The Authors. Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.
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