Chenevert T L, Bylski D I, Carson P L, Meyer C R, Bland P H, Adler D D, Schmitt R M
Radiology. 1984 Jul;152(1):155-9. doi: 10.1148/radiology.152.1.6729107.
The authors present two methods of reducing refraction artifacts in ultrasonic computed tomography of the breast. Measuring the time of flight of sonic pulses by cross-correlation instead of leading-edge detection significantly reduces distortion and improves resolution in speed-of-sound images. Phase-insensitive reception of pulse energy across a large aperture array is shown to be superior to a conventional single-element transducer for attenuation imaging.
作者介绍了两种减少乳腺超声计算机断层扫描中折射伪影的方法。通过互相关而非前沿检测来测量声脉冲的飞行时间，可显著减少失真并提高声速图像的分辨率。对于衰减成像，在大孔径阵列上进行对脉冲能量不敏感的接收显示优于传统的单元素换能器。
