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Dosimetry on First Clinical Dark‐Field Chest Radiography

Frank, Manuela; Urban, Theresa; Willer, Konstantin; Noichl, Wolfgang; De Marco, Fabio; Schick, Rafael; Gleich, Bernhard; Schegerer, Alexander; Lechel, Ursula; Meyer, Pascal 1; Mohr, Juergen 1; Koehler, Thomas; Yaroshenko, Andre; Maack, Ingo; Pralow, Thomas; Proksa, Roland; Renger, Bernhard; Noël, Peter; Fingerle, Alexander; ... mehr

Abstract:

Purpose
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.
Methods
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.
Results
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.
Conclusions
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.


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Originalveröffentlichung
DOI: 10.1002/mp.15132
Scopus
Zitationen: 8
Dimensions
Zitationen: 10
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2021
Sprache Englisch
Identifikator ISSN: 0094-2405, 2473-4209
KITopen-ID: 1000136215
HGF-Programm 43.35.01 (POF IV, LK 01) Platform for Correlative, In Situ & Operando Charakterizat.
Erschienen in Medical physics
Verlag John Wiley and Sons
Band 48
Heft 10
Seiten 6152-6159
Vorab online veröffentlicht am 27.07.2021
Schlagwörter Proposal: 2016-015-010729, Technologien: DLW, EBL, XRL
Nachgewiesen in Scopus
Dimensions
Web of Science
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