Online Journal
IF値: 1.878(2021年)→1.8(2022年)


Journal of Medical Ultrasonics

にて英文誌のFull textを閲覧することができます.


1993 - Vol.20

Vol.20 No.05

Original Article(原著)

(0291 - 0295)

Acoustic Quantificationを用いた左室内腔断面積とFractional Area Changeの評価

Evaluation of Ventricular Areas and Fractional Change Using an Acoustic Quantification Method

八木 登志員, 吉川 純一, 吉田 清, 赤阪 隆史, 赤土 正洋, 高木 力, 三宅 仁, 大倉 宏之, 穂積 健之, 前西 文秋

Toshikazu YAGI, Junichi YOSHIKAWA, Kiyoshi YOSHIDA, Takashi AKASAKA, Masahiro SHAKUDO, Tsutomu TAKAGI, Shinobu MIYAKE, Hiroyuki OKURA, Takeshi HOZUMI, Fumiaki MAENISHI


Department of Cardiology, Kobe General Hospital

キーワード : Acoustic quantification, Left ventricular area , Fractional area change, Edge detection

Recently, a new echocardiographic imaging system has been developed that detects and traces endocardial boundaries in real time, based on the quantitative acoustic properties of tissue and blood. Acoustic quantification (AQ: the real-time automated edge detection system) was interfaced with special software to allow on-line display of the instantaneous left ventricular (LV) cavity area (cm2) and fractional area change (%FAC). Our purpose was to compare measurements of the endocardial area that were manually traced from conventional echocardiograms with those obtained by the real-time automated edge detection system. Normal subjects were used. Although the real-time derived results were underestimated, excellent correlations were obtained for the left ventricular end-diastolic [24±4 (AQ) vs 26±4 cm2 (manually)] and end-systolic areas [16±4 (AQ) vs 17±4 cm2 (manually)] measured from apical four chamber view (r=0.98, p2 vs r=0.90, p2, respectively). Manually drawn FAC and real-time FAC also correlated well (r=0.99, p