Effect of X-ray beam quality on determination of exposure index

Shogo Yasumatsu, Nobukazu Tanaka, Kensuke Iwase, Yoichiro Shimizu, Junji Morishita

研究成果: ジャーナルへの寄稿学術誌査読

8 被引用数 (Scopus)


We investigated the effect of X-ray beam qualities RQA3, 5, 7, and 9 on the exposure index (EI) as defined by International Electrotechnical Commission guideline 62494-1. Half-value layers (HVLs) of RQA5 X-rays passing through anti-scatter grids (grid ratios 6:1, 8:1, 10:1, and 12:1) were also evaluated because grids are frequently used in clinical situations. The maximum percent differences in the EIs for RQA3, 7, and 9 with respect to RQA5 were 35.0, 11.6, and 38.7 %, respectively. The range of HVLs for RQA5–7 beams was 7.10–9.10 mm of aluminum (mm Al). This was wider than the range of HVLs when grids were used (6.94–7.29 mm Al). The effect of variations in X-ray beam qualities in the RQA series on the EI was significantly greater than the effect of grids. This study indicated that, in clinical settings, the EI should be used carefully in X-ray examinations with different X-ray beam qualities.

ジャーナルRadiological physics and technology
出版ステータス出版済み - 1月 1 2016

!!!All Science Journal Classification (ASJC) codes

  • 放射線
  • 理学療法、スポーツ療法とリハビリテーション
  • 放射線学、核医学およびイメージング


「Effect of X-ray beam quality on determination of exposure index」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。