Detection of a coronary artery vessel wall: Performance of 0.3 mm fine-cell detector computed tomography - A phantom study

Minoru Yamada, Masahiro Jinzaki, Yutaka Tanami, Kazuhiro Matsumoto, Akihisa Ueno, Masatake Nukui, Yasuhiro Imai, Yotaro Ishihara, Akihiko Nishide, Kosuke Sasaki, Sachio Kuribayashi

研究成果: Article査読

14 被引用数 (Scopus)

抄録

The purpose of this study was to evaluate whether experimental fine-cell detector computed tomography with a 0.3125 mm cell (0.3 mm cell CT) can improve the detection of coronary vessel walls compared with conventional 64-slice computed tomography with a 0.625 mm cell (0.6 mm cell CT). A coronary vessel wall phantom was scanned using 0.6 mm cell CT and 0.3 mm cell CT. The data for 0.3 mm cell CT were obtained using four protocols: a radiation dose equal, double, triple or quadruple that were used in the 0.6 mm cell CT protocol. The detectable size of the vessel wall was assessed based on the first and second derivative functions, and the minimum measurable values were compared using a paired t-test. As a result, the minimum detectable wall thickness of 0.6 mm cell CT (1.5 mm) was significantly larger than that of 0.3 mm cell CT performed using the triple- and quadruple-dose protocols (0.9 mm) and the double-dose protocol (1.1 mm). The difference in the minimum detectable vessel wall thickness measured using 0.6 mm cell CT (1.5 0.1 mm) and 0.3 mm cell CT (0.9 0.1 mm, 1.1 0.2 mm) was significant (p < 0.01). We concluded that 0.3 mm cell CT improved the detection of coronary vessel walls when a more than double-dose protocol was used compared with 0.6 mm cell CT.

本文言語English
ページ(範囲)5235-5247
ページ数13
ジャーナルPhysics in Medicine and Biology
56
16
DOI
出版ステータスPublished - 2011 8月 21

ASJC Scopus subject areas

  • 放射線技術および超音波技術
  • 放射線学、核医学およびイメージング

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