踵骨軸位撮影法(<論文>原著)
スポンサーリンク
概要
- 論文の詳細を見る
Low-frequency noise caused by intestinal gas, bone, or high-contrast subjects on roentgenographs often makes them difficult to read. The plantodorsal projection of the calcaneus taken by the conventional method has low-frequency noise because of its own high contrast for the long axis. Even if a higher X-ray tube voltage is used to reduce the low-frequency noise, middle- or high-frequency signals such as those of bone trabeculae are also reduced. We investigated a new method that takes into consideration the subject contrast between the part of the posterior calcanean articulation and distal part on the calcaneus projection, the spectrum of bone trabeculae, and the scatter fraction. The technique we introduced has some merit compared with the conventional method in that it reduces image distortion, provides low contrast for the long axis, and sharpens trabeculae images and articulations.
- 公益社団法人日本放射線技術学会の論文
- 2002-11-20
著者
関連論文
- 専用ソフトウェアを用いたCR品質管理について : 使用環境の異なる装置の比較(第64回総会学術大会放射線防護・管理関連演題発表後抄録)
- 43. HALF BEAMを用いた腹部単純立位撮影 第一報
- 43. Half Beam を用いた腹部単純立位撮影第一報(第 22 回秋季学術大会一般研究発表予稿)
- 44. HALF BEAMを用いた腹部単純立位撮影 第二報
- 44. Half Beam を用いた腹部単純立位撮影第二報(第 22 回秋季学術大会一般研究発表予稿)
- 踵骨軸位撮影法(原著)