[Evaluation of the edge enhancement effect of phase contrast imaging using newly-developed photostimulable phosphor plate].

Satoru Matsuo, Junji Morishita, Tetsuro Katafuchi, Hiroshi Fujita

研究成果: Contribution to journalArticle査読

抄録

We investigated whether the use of a newly developed columnar-crystal-type photostimulable-phosphor plate (CP1M200, referred to as system C) helps to provide improved edge-enhanced effect in phase contrast imaging. Physical characteristics of 2 conventional particulate-crystal-type photostimulable-phosphor plates (RP-5PM, referred to as system A and RP-6M, referred to as system B) and system C were measured. Then, an acrylic plate phantom and RMI152 phantom were imaged using 3 types of plates, and the edge-enhancement effects were evaluated based on the profile curve of the acrylic plate phantom. Visual evaluation of the RMI152 phantom images was conducted. The results showed that the modulation transfer function (MTF) of system C was superior to those of the other systems. The WS of system C was superior to those of the other systems in the low frequency band region, and inferior to those of the other systems in the high frequency band region. The presence of an edge-enhanced image was not detectable in the profile curve of the acrylic plate in system A, although that was shown in systems B and C due to their excellent sharpness. In the visual image evaluation of the RMI152 phantom, image quality of system C was superior to those of the other systems. Phase contrast imaging with a digital detector of a columnar-crystal-type photostimulable-phosphor plate is considered to provide improved edge-enhancement over that of conventional plates.

本文言語英語
ページ(範囲)563-572
ページ数10
ジャーナルNihon Hoshasen Gijutsu Gakkai zasshi
68
5
DOI
出版ステータス出版済み - 2012

All Science Journal Classification (ASJC) codes

  • Medicine(all)

引用スタイル