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Title: A feasibility study on reduction of the entrance-surface dose to neonates by use of a new digital mobile X-ray system.
Authors: Utsunomiya, Satoru
Monzen, Hajime
Akimoto, Mami
Mukumoto, Nobutaka  kyouindb  KAKEN_id
Ishihara, Yoshitomo
Shiinoki, Takehiko
Nakamura, Mitsuhiro  kyouindb  KAKEN_id
Miyabe, Yuki  kyouindb  KAKEN_id
Sato, Sayaka
Matsuo, Satoru
Hiraoka, Masahiro  KAKEN_id
Author's alias: 門前, 一
Keywords: Entrance-surface dose
Digital mobile X-ray system
Flat-panel detector
Neonatal intensive care unit
Issue Date: Jan-2013
Publisher: Springer Japan
Journal title: Radiological physics and technology
Volume: 6
Issue: 1
Start page: 157
End page: 161
Abstract: We investigated the neonatal entrance-surface dose (ESD) and doses of scattered radiation emitted by a digital mobile X-ray system. The system is equipped with a novel flat-panel detector and is used in the neonatal intensive care unit. In the present study, the following three experiments were performed on frequently used X-ray-imaging condition: (1) the digital characteristics of the FPD were evaluated; (2) the ESD to a water-equivalent phantom was measured with a patient skin dosimeter (PSD); and (3) the scattered radiation around the incubator was measured with an ionization chamber survey meter. The digital characteristic curve showed that the system had excellent linearity and that the contrast characteristics were not affected by the tube voltage in the range of 50-110 kV. The ESD was 51-52 μGy with an 8-cm-thick phantom and 33-34 μGy with a 4.5-cm phantom, for one exposure. The doses measured around the incubator were 0.1-0.6 μSv or below measurable limits. Use of the new device demonstrates the potential of reducing the ESD to the patient and operator.
Rights: The final publication is available at
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1007/s12194-012-0182-1
PubMed ID: 23086629
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