Measurement of Patient Lens Exposure during Cerebral Endovascular Treatment Using a Scintillation Optical Fiber Dosimeter

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  • Kikuchi Keisuke
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Matsumoto Kazuma
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Nasada Toshiya
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Hagihara Yoshiaki
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Ikeuchi Youko
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Iizuka Takafumi
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Mitsuie Chiemi
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Kishida Hiromi
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Fujii Ryousuke
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Nakano Shinya
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Kotoura Noriko
    Department of Radiological Technology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Uchida Kazutaka
    Department of Neurosurgery, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Shirakawa Manabu
    Department of Neurosurgery, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
  • Yoshimura Shinichi
    Department of Neurosurgery, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan

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抄録

<p>Purpose: It is difficult to predict lens radiation dose of the patients during neuroendovascular treatment due to various factors potentially affecting radiation dose such as a various working projection for individual procedures. The purpose of this study was to examine the association between the patient lens entrance dose (lens dose) during cerebral endovascular treatment and displayed dose on a system, as well as the influence of 3D imaging on lens exposure, and clarify factors influencing lens exposure.</p><p>Methods: In patients who underwent cerebral endovascular treatment under general anesthesia between February and December 2017, the lens dose was measured using a real-time scintillation optical fiber dosimeter. The correlation between the lens dose and displayed dose on each system was analyzed. Furthermore, dose data were divided into fluoroscopy, DSA, and 3D imaging, and respective values as a percentage of the lens dose were calculated.</p><p>Results: There was a strong correlation between the lens dose and Kerma Area Product (KAP) value. The lens dose was weakly correlated with the Air Kerma (AK) value and duration of fluoroscopy. 3D imaging for the visualization of a stent increased the value of 3D imaging as a percentage of the lens dose, and the lens dose increased with the frequency of imaging. In patients with a large field of irradiation after the establishment of a working angle, the lens dose increased.</p><p>Conclusion: We evaluated the characteristics of the lens dose. In the future, the management of the lens dose should be examined.</p>

収録刊行物

  • 脳神経血管内治療

    脳神経血管内治療 13 (1), 1-8, 2019

    特定非営利活動法人 日本脳神経血管内治療学会

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