Evaluation of the image quality of temporal subtraction images produced automatically in a PACS environment

Shuji Sakai, Hiroyasu Soeda, Akio Furuya, Hidetake Yabuuchi, Takashi Okafuji, Keiji Yamamoto, Hiroshi Honda, Kunio Doi

研究成果: Contribution to journalArticle

6 引用 (Scopus)

抜粋

The aim of the study is to evaluate the reliable production of temporal subtraction images in a picture archiving and communication system environment and to establish objective criteria for the evaluation of image quality. A total of 117 temporal subtraction chest images (55 in the upright position, 62 in the supine position) were obtained in five consecutive days. In all of these, we confirmed that there were no interval changes on the original images, and cases with diffuse lung disease were excluded. The temporal subtraction images were classified by three chest radiologists into five levels: 5, excellent; 4, good; 3, acceptable; 2, poor; and 1, very poor. The following were examined: (1) the yield of adequate quality of the temporal subtraction images; (2) whether the temporal subtraction images were obtained in the warping or nonwarping mode; and (3) the correlation of the overall subjective image quality with the relative shift angles, relative shift distances, and the standard deviation of gray levels in the temporal subtraction images. The percentages of acceptable temporal subtraction images were 100% and 66% in the upright and supine positions, respectively. Sixteen (26%) of the 62 supine-position images were made in nonwarping mode, whereas all upright images were made in warping mode. Significant correlations were obtained in the relative shift angle (P < 0.05), relative horizontal shift distance (P < 0.05), and standard deviation of gray levels (P < 0.0001). Temporal subtraction images with acceptable image quality were obtained in the upright position. The objective criteria may be useful for the evaluation of image quality.

元の言語英語
ページ(範囲)383-390
ページ数8
ジャーナルJournal of Digital Imaging
19
発行部数4
DOI
出版物ステータス出版済み - 12 1 2006

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Computer Science Applications

フィンガープリント Evaluation of the image quality of temporal subtraction images produced automatically in a PACS environment' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用