Evaluation of image quality of personal ultrasound imager: Comparison with the conventional machine

被引：0

作者：

Wen Y.L. ^{[1
,3
]}

Kudo M. ^{[1
]}

Maekawa K. ^{[2
]}

Kawasaki T. ^{[1
]}

Chung H. ^{[1
]}

Minami Y. ^{[1
]}

Suetomi Y. ^{[1
]}

Onda H. ^{[1
]}

Kitano M. ^{[1
]}

Matsui S. ^{[1
]}

Eguchi M. ^{[2
]}

Kuwaguchi A. ^{[2
]}

Kawabata K. ^{[2
]}

机构：

[1] Department of Gastroenterology and Hepatology, Kinki University School of Medicine, Osaka-Sayama 589-8511

[2] Abdominal Ultrasound Unit, Kinki University School of Medicine, Osaka-Sayama 589-8511

[3] Department of Ultrasound, Sun Yut-Sen University of Medical Science Memorial Hospital, Guangzhou 510120

来源：

Journal of Medical Ultrasonics | 2002年 / 29卷 / 2期

关键词：

Directional power Doppler imaging; Image quality; Personal ultrasound imager (PUI); Power Doppler imaging; Ultrasound;

D O I：

10.1007/BF02481438

中图分类号：

学科分类号：

摘要：

Objective: To determine if the image quality of a personal ultrasound imager (PUI) is as good as that of a conventional machine (CM). Materials and Methods: Ninety patients were studied by the same operator using both the PUI and CM. The quality of the B-mode images obtained from these patients was scored 0, 1, or 2, defined as poor, fair, or good, respectively. Liver-tumor vascularity depicted by power Doppler imaging (PDI) and directional PDI (DPDI) was classified as 0, no blood signal; 1, dot-like blood signal within the tumor; 2, mild blood-flow signal within the tumor; and 3, abundant blood-flow signal within the tumor. Results: The mean score of PUI and CM B-mode image quality was 7.47±0.92 and 7.54±0.99 (mean±SD), respectively (p=0.531). On PDI, grade of vascularity of the liver tumors determined with the PUI was 4.44 and 4.68 in those determined with the CM (p=0.78). On DPDI, tumor vascularity was 3.12 when scored by the PUI and 4.29 when scored with the CM (p=0.03). The qualities of images acquired by the PUI and CM were significantly correlated. Conclusion: The quality of B-mode images acquired using the PUI and CM are statistically the same, and they share a similar ability to detect intratumoral blood-flow signals on PDI. Because of its extreme portability, the PUI is expected to become a valuable diagnostic tool in the clinic.

引用

页码：41 / 46

页数：5

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