ESTIMATION of PATIENT LENS DOSE ASSOCIATED with C-ARM CONE-BEAM COMPUTED TOMOGRAPHY USAGE during INTERVENTIONAL NEURORADIOLOGY

Satoru Kawauchi, Koichi Chida, Takashi Moritake, Yuji Matsumaru, Yusuke Hamada, Hideyuki Sakuma, Shogo Yoda, Lue Sun, Masayuki Sato, Wataro Tsuruta

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The purpose of this study was to investigate the dose distribution and lens doses associated with C-arm cone-beam computed tomography (CBCT), using a head phantom, and to estimate the contribution ratio of C-arm CBCT to each patient's lens dose during interventional neuroradiology ('lens dose ratio') in 109 clinical cases. In the phantom study, the peak skin doses and respective right and left lens doses of C-arm CBCT were as follows: 63.0 ± 1.9 mGy, 19.7 ± 1.4 mGy and 21.9 ± 0.8 mGy in whole brain C-arm CBCT and 39.2 ± 1.4 mGy, 4.7 ± 0.9 mGy and 3.6 ± 0.3 mGy in high-resolution C-arm CBCT. In the clinical study, the lens dose ratios were 25.4 ± 8.7% in the right lens and 19.1 ± 9.8% in the left lens. This study shows that, on average, ~25% of patients' total lens dose was contributed by C-arm CBCT.

Original languageEnglish
Pages (from-to)138-147
Number of pages10
JournalRadiation protection dosimetry
Volume184
Issue number2
DOIs
Publication statusPublished - 2019 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

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