Evaluation of the CT dose index for scans with an ECG using a 320-rowmultiple-detector CT scanner

Masanao Kobayashi, Yasuki Asada, Kosuke Matsubara, Kichiro Koshida, Shouichi Suzuki, Yuta Matsunaga, Ai Kawaguchi, Tomonobu Haba, Kazuhiro Katada, Hiroshi Toyama

研究成果: Article

1 引用 (Scopus)

抜粋

The relationship between heart rate (HR) and computed tomography dose index (CTDI) was evaluated using an electrocardiogram (ECG) gate scan for scan applications such as prospective triggering, Ca scoring, target computed tomography angiography (CTA), prospective CTA and retrospective gating, continuous CTA/CFA (cardiac functional analysis) and CTA/CFA modulation. Even in the case of a volume scan, doses for the multiple scan average dose were similar to those for CTDI. Moreover, it was found that the ECG gate scan yields significantly different doses. When selecting the optimum scan, the doses were dependent on many factors such as HR, scan rotation time, active time, prespecified cardiac phase and modulation rate. Therefore, it is necessary to take these results into consideration when selecting the scanning parameters.

元の言語English
記事番号ncu331
ページ(範囲)532-541
ページ数10
ジャーナルRadiation protection dosimetry
167
発行部数4
DOI
出版物ステータスPublished - 01-12-2015

    フィンガープリント

All Science Journal Classification (ASJC) codes

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

これを引用

Kobayashi, M., Asada, Y., Matsubara, K., Koshida, K., Suzuki, S., Matsunaga, Y., Kawaguchi, A., Haba, T., Katada, K., & Toyama, H. (2015). Evaluation of the CT dose index for scans with an ECG using a 320-rowmultiple-detector CT scanner. Radiation protection dosimetry, 167(4), 532-541. [ncu331]. https://doi.org/10.1093/rpd/ncu331