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ID 11722
Eprint ID
11722
フルテキストURL
K003314.pdf 79.2 KB
タイトル(別表記)
ブタ伸展固定肺を用いた0.5-mm等方向データから得られるMPR画像の検討
著者
牧 大介 岡山大学
抄録
The aim of the present study was to define the resolution of multiplanar reconstruction (MPR) of the lung from "theoretical isotropic data." Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pitches: 1:7 (high-quality mode) or 1:13, (high-speed mode), and 2 different tube currents: 250 mAs (high-tube-current mode) or 100 mAs (low-tube-current mode), with or without overlapping reconstruction. MPRs were created from these axial data. The diameter of the smallest visible pulmonary artery and bronchi of these CT images were measured on the corresponding slices of the specimen. The high-speed and low-tube-current mode significantly degraded the image quality due to increased noise. The smallest visible pulmonary artery and bronchus resolved on MPRs from axial-spiral data with 0.5-mm collimation were approximately 100 micrometer and 1,000 micrometer in diameter, respectively. In conclusion, helical pitch and tube current influence the resolution of MPR of the lung.
キーワード
multiplanar reconstruction
computed tomography
lung
備考
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=17471306&dopt=Abstract
発行日
2007-03-23
出版物タイトル
資料タイプ
学位論文
学位授与番号
甲第3314号
学位授与年月日
2007-03-23
授与大学
岡山大学
オフィシャル URL
http://escholarship.lib.okayama-u.ac.jp/cgi/viewcontent.cgi?article=2778&context=amo
言語
Japanese
論文のバージョン
none
査読
不明