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.


1991 - Vol.18

Vol.18 No.06

Original Article(原著)

(0612 - 0619)


Tissue Characterization of Prostate by Amplitude Image and Mean Frequency Image Constructed Using Backscattered Signal

小谷 和彦1, 山根 明文2, 田丸 俊三2, 上田 正伸2, 宮川 征男2

Kazuhiko KODANI1, Akihumi YAMANE2, Shunzo TAMARU2, Masanobu UEDA2, Ikuo MIYAGAWA2

1鳥取大学医学部放射線科, 2鳥取大学医学部泌尿器科

1Department of Radiology, Tottori University School of Medicine, 2Department of Urology, Tottori University School of Medicine

キーワード : Prostate, Amplitude image, Mean frequency image, Texture analysis

Ultrasonic B-mode examination, though widely used, is unsuitable for quantitative evaluation because modifications are necessary during image processing. The authors constructed amplitude images (AMI) and mean frequency images (FMI) using an ultrasonic back-scattered radio-frequency signal directory and judged the image patterns quantitatively by analyzing the texture. Because the probability function of amplitude is solved mathematically, we could evaluate AMI quantitatively, unlike B-mode images. We also used FMI, which displays frequency information, to compensate for B-mode images (also AMI) constructed using only amplitude information.
Twenty-six patients who had surgery (prostatic cancer (Pc) , 5 cases; chronic prostatitis (Ptis) , 5 cases; and benign prostatic hypertrophy (Ph), 16 cases) were investigated using a waterbath.
Thirteen texture parameters were calculated and compared among the three diseases (Pc, Ptis, Ph). On AMI, there were statistically significant differences (p On FMI, a statistical difference (p