逐次近似応用再構成法が CT 画像の物理特性に及ぼす影響： 小児体幹部 CT 検査を想定した検討

DOI Web Site Web Site PubMed 参考文献20件 オープンアクセス

書誌事項

タイトル別名
  • Effects of Iterative Reconstruction on Image Quality of Pediatric Body Computed Tomography Images
  • チクジ キンジ オウヨウ サイコウセイホウ ガ CT ガゾウ ノ ブツリ トクセイ ニ オヨボス エイキョウ : ショウニ タイカンブ CT ケンサ オ ソウテイ シタ ケントウ

この論文をさがす

説明

<p>This study evaluated the effects of three types of hybrid iterative reconstruction (IR) on image quality of pediatric body computed tomography images. The image quality components evaluated were noise power spectrum (NPS), task-based modulation transfer function (TTF), and system performance function (SPF). As the IR strength was increased while reducing the radiation dose, the NPS increased in a low-frequency range and the TTF decreased in low-contrast regions. In the low-contrast regions, the calculated SPF decreased over the entire frequency range. Alternatively, in the high-contrast regions, the SPF decreased in the low-frequency regions and increased in the high-frequency regions. The radiation dose reduction using the hybrid IR resulted in the deterioration of the image quality in the low-contrast regions and changes in the spatial frequency characteristics in the high-contrast regions.</p>

収録刊行物

参考文献 (20)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ