公开(公告)号：WO2008067541A2

公开(公告)日：2008-06-05

申请号：PCT/US2007086108

申请日：2007-11-30

Applicant: IMACOR LLC ,  HASTINGS HAROLD M

Inventor： HASTINGS HAROLD M

IPC: G01S15/89 ,  G01S7/52

CPC classification number: G01S15/8954 ,  G01S7/52038 ,  G01S7/52046

Abstract: When an ultrasound transducer is driven by a signal that contains a relatively wide range of frequencies, the frequency-dependent attenuation characteristics of the subject being imaged can be relied on to simultaneously provide, using only a single pulse per line of the image, (a) a return from the deeper portions of the image that is dominated by lower frequencies and (b) a return from the shallower portions of the image that is dominated by higher frequencies. These returns are processed into an image with higher resolution in the shallower parts, and lower resolution with adequate SNR in the deeper parts.

Abstract translation: 当超声换能器由包含相对宽的频率范围的信号驱动时，被摄体的频率相关的衰减特性可以被依赖于使用每行图像仅使用单个脉冲（a ）从由较低频率主导的图像的较深部分的返回，以及（b）来自由较高频率支配的图像的较浅部分的返回。 这些返回在更浅的部分被处理成具有更高分辨率的图像，并且在较深部分中具有较低的具有足够SNR的分辨率。

公开(公告)号：WO2005016444A3

公开(公告)日：2005-06-16

申请号：PCT/US2004020431

申请日：2004-06-22

Applicant: PRISMA MEDICAL TECHNOLOGIES LL ,  HASTINGS HAROLD M ,  EVANS STEVEN J L ,  ROTH SCOTT L

Inventor： HASTINGS HAROLD M ,  EVANS STEVEN J L ,  ROTH SCOTT L

IPC: G01S7/52 ,  G01S15/89 ,  G06T5/00 ,  A61B9/00 ,  A61B8/12 ,  A61B8/14 ,  G01N3/54 ,  G01N19/02

CPC classification number: G06T5/10 ,  G01S7/52077 ,  G01S15/8977 ,  G06T5/008 ,  G06T2207/10132 ,  G06T2207/30004

Abstract: A method for reducing speckle in an ultrasonic image formed from a digitized scan line including linearly arranged signal intensity data points obtained from ultrasonic energy reflected by structures within a body. The scan line is divided into intensity pixels. Each intensity pixel includes at least one data point. A raw intensity level and a feature gain factor are determined for each intensity pixel. A corrected intensity level is calculated for each intensity pixel by multiplying the raw intensity level for each intensity pixel by the corresponding feature gain factor. The corrected intensity level of each intensity pixel is displayed.

Abstract translation: 一种用于减少由数字化扫描线形成的超声波图像中的散斑的方法，所述数字化扫描线包括从体内结构反射的超声能量获得的线性排列的信号强度数据点。 扫描线被分成强度像素。 每个强度像素包括至少一个数据点。 为每个强度像素确定原始强度等级和特征增益因子。 通过将每个强度像素的原始强度等级乘以对应的特征增益因子来为每个强度像素计算校正的强度等级。 显示每个强度像素的校正强度等级。