Evaluation of X-ray Fluoroscopic Pulse Rate Considering Patients' Dose Reduction in Neuroendovascular Therapy

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  • Yamada Masanobu
    Department of Radiology, National Cerebral and Cardiovascular Center Department of Radiological Technology, Tohoku University School of Health Sciences
  • Chida Koichi
    Department of Radiological Technology, Tohoku University School of Health Sciences
  • Satow Tetsu
    Department of Neurosurgery, National Cerebral and Cardiovascular Center
  • Yokoyama Hiromichi
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Doi Shohei
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Hirase Yoshinori
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Satou Tatsuya
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Morikawa Susumu
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Murakawa Keizo
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Harumoto Kazuto
    Department of Radiology, National Cerebral and Cardiovascular Center
  • Fukuda Tetsuya
    Department of Radiology, National Cerebral and Cardiovascular Center

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Other Title
  • 脳血管内治療における患者の被曝低減を考慮したX 線透視パルスレートの検討
  • ノウ ケッカン ナイ チリョウ ニ オケル カンジャ ノ ヒバクテイゲン オ コウリョ シタ Xセン トウシ パルスレート ノ ケントウ

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Description

<p>Objective: The radiation dose varies depending on fluoroscopic pulse per second (pps). When we got a new angio machine in 2014, fluoroscopic pps was set up only 12.5 pps in vessel protocol with cerebral angio machine. Moreover, reducing fluoroscopic pps might contribute to reducing patients' radiation dose and produces clinically useful images. Therefore, we preferred a company machine which created 6.25 fluoroscopic pps. To examine reduce of patients' radiation dose for reducing of fluoroscopic pps in cerebral angiography, we visually evaluated these phantom images (wire rotation phantom and low contrast).</p><p>Case Presentations: These images of 6.25 and 12.5 pps were equivalent quality for treating aneurysms of the basilar tip.</p><p>Conclusion: Results of comparison of exposure dose rates at interventional reference point show that the exposure dose rates using 6.25 pps were reduced more than 12.5 pps (maximum 51% and average 42%). These phantom images were equivalent quality. The method to use 6.25 pps fluoroscopic technique in neuroendovascular therapy is one of the effective radiation exposure reductions.</p>

Journal

  • No Kekkannai Chiryo

    No Kekkannai Chiryo 3 (2), 72-79, 2018

    The Japanese Society for Neuroendovascular Therapy

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