https://scholars.lib.ntu.edu.tw/handle/123456789/318080
標題: | Ultrasonic computed tomography reconstruction of the attenuation coefficient using a linear array | 作者: | S.-W. Huang P.-C. Li PAI-CHI LI |
公開日期: | 十一月-2005 | 卷: | 52 | 期: | 11 | 起(迄)頁: | 2011-2022 | 來源出版物: | IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control | 摘要: | The attenuation coefficient distribution and sound velocity distribution in the breast can be used to complement B-mode ultrasound imaging in the detection of breast cancer. This study investigated an approach for re-constructing the attenuation coefficient distribution in the breast using a linear array. The imaging setup was identical to that for conventional B-mode breast imaging, and the same setup has been used for reconstruction of sound velocity distributions in previous studies. In this study, we further developed a reconstruction method for the attenuation coefficient distribution. In particular, the proposed method incorporates the segmentation information from B-mode images and uses the sound velocity distribution to compensate for refraction effects. Experiments were conducted with a setup consisting of a 5-MHz, 128-channel linear array, a programmable digital array system, a phantom, and a computer. The constructed phantom contained materials mimicking the following breast tissues: glandular tissue, fat, cysts, high-attenuation tumors, and irregular tumors. Application of the proposed technique resulted in all the cysts and tumors (including high-attenuation and irregular tumors) being distinguished by thresholding the re-constructed attenuation coefficients. We have demonstrated that it is possible to use the same imaging setup to acquire data for B-mode image, sound velocity distribution, and attenuation coefficient distribution simultaneously. Moreover, the experimental data indicate its potential in improving the detection of breast cancer. ? 2005 IEEE. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/318080 | DOI: | 10.1109/TUFFC.2005.1561670 | SDG/關鍵字: | Attenuation coefficients; Breast cancer; Glandular tissue; Ultrasonic computed tomography; Medical imaging; Tomography; Tumors; Ultrasonic imaging; Ultrasonic refraction; Ultrasonic velocity; Ultrasonics; Attenuation; algorithm; article; breast tumor; computer assisted diagnosis; echography; echomammography; equipment; equipment design; evaluation; human; image enhancement; image quality; instrumentation; methodology; reproducibility; sensitivity and specificity; tomography; transducer; Algorithms; Breast Neoplasms; Equipment Design; Equipment Failure Analysis; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Phantoms, Imaging; Reproducibility of Results; Sensitivity and Specificity; Tomography; Transducers; Ultrasonography, Mammary |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。