Tuthill T A, Krücker J F, Fowlkes J B, Carson P L
Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109-0553, USA.
Radiology. 1998 Nov;209(2):575-82. doi: 10.1148/radiology.209.2.9807593.
For ultrasonographic B-scan images collected by means of a handheld transducer moving in the elevational direction, frame spacings are computed with a speckle-decorrelation algorithm, without additional positioning hardware. Fully developed speckle volumes are automatically segmented and spacing computed from the decorrelation curves. Position accuracy is within 10% for phantoms and 15% for breast studies. The algorithm provides image-based registration, which allows accurate three-dimensional volume rendering.
对于通过在仰角方向移动的手持式换能器采集的超声B扫描图像，无需额外的定位硬件，利用散斑去相关算法计算帧间距。完全发育的散斑体积会自动分割，并根据去相关曲线计算间距。对于体模，位置精度在10%以内，对于乳腺研究，位置精度在15%以内。该算法提供基于图像的配准，从而实现精确的三维体积渲染。
