摘要:
The invention relates to a medical imaging system. First, a sequence of images of a part of a body (BO) is acquired. Second, a feature of interest is detected automatically. Third, at least one parameter characteristic of said feature of interest for each image acquired is computed. Finally, the parameter having the 5 greatest value among the computed parameters is displayed automatically.
摘要:
Image processing method for displaying an image sequence of a deformable 3-D object with indications of the object wall motions comprising steps of acquiring image data of an image sequence, segmenting the 3-D object in the images of the sequence for locating the wall of the 3-D object, and coloring voxels or parts of the wall in function of their displacement with respect to the wall of the 3-D object in one image of the sequence chosen as a reference. Color images of the 3-D object with color coded voxels or parts of the wall are displayed in a sequence for the user to estimate the object wall motion. This method is used in medical examination apparatus for studying ultrasound images of organs whose walls have motion.
摘要:
A method for utilizing user input for segmentation and feature detection in diagnostic ultrasound imaging is provided. The method provides border detection to be performed rapidly; a feature, which allows the border detection method to be applied to real-time video imaging with little or no delay. The border detection method may be incorporated within a diagnostic ultrasound imaging system or as a user-installable software application capable of being installed on and executed by an ultrasound imaging system.
摘要:
Generating at least one view (420) of a portion of a computed tomography image includes selecting (310) a seed point (410) for a structure of interest within the image, pre-processing (320) a region of interest surrounding the seed point, estimating (325) at least one inertia axis for the region of interest, and generating (345) the at least one view from one or more of three planes that include the seed point and are orthogonal to each axis of inertia.
摘要:
A system and method for image registration includes tracking (508) a scanner probe in a position along a skin surface of a patient. Image planes corresponding to the position are acquired (510). A three-dimensional volume of a region of interest is reconstructed (512) from the image planes. A search of an image volume is initialized (514) to determine candidate images to register the image volume with the three-dimensional volume by employing pose information of the scanner probe during image plane acquisition, and physical constraints of a pose of the scanner probe. The image volume is registered (522) with the three-dimensional volume.
摘要:
In an ultrasound imaging system (UIS), an ultrasound scanning assembly (USC) provides volume data (VD) resulting from a three-dimensional scan of a body (BDY). A feature extractor (FEX) searches for a best match between the volume data (VD) and a geometrical model (GM) of an anatomical entity. The geometrical model (GM) comprises respective segments representing respective anatomic features. Accordingly, the feature extractor (FEX) provides an anatomy-related description (ARD) of the volume data (VD), which identifies respective geometrical locations of respective anatomic features in the volume data (VD). In a preferred embodiment, a slice generator (SLG) generates slices (SX) from the volume data (VD) based on the anatomy-related description (ARD) of the volume data (VD).
摘要:
A medical ultrasound viewing system for processing a sequence of three-dimensional (3-D) ultrasound images far performing a quantitative estimation of a flow through a body organ comprising means for performing steps of acquiring a sequence of 3D color flow images, of said flow; assessing the flow velocity values in the 3D images, constructing isovelocity surfaces (6) by segmentation of the flow velocity values; computing the volume (Vol) delimited by the isovelocity surfaces; and using the flow velocity value (V) and the volume (Vol) computed from a segmented surface for computing the surface of an orifice (3) of the organ through which the flow propagates. The viewing system further comprises means for performing steps of measuring the peak velocity (VREG) of said flow through said orifice; computing the surface of the orifice (SOR) through which the flow propagates as a function of the flow velocity value (V) at an isovelocity surface upstream the flow propagation with respect to said orifice, the volume (Vol) computed from said segmented isovelocity surface, and the peak velocity of the flow through said orifice. The surface is given by the formula: SOR=Vol. V/VREG. The system can be applied to the assessment of the surface of regurgitation of the mitral jet.
摘要翻译:一种用于处理远程执行通过身体器官的流量的定量估计的三维(3-D)超声图像序列的医学超声观察系统,包括用于执行获取所述流程的三维彩色图像序列的步骤的装置 ; 评估3D图像中的流速值,通过流速值的分割构建等速面(6); 计算由isovelocity表面定界的体积(Vol); 并且使用从分段表面计算的流速值(V)和体积(Vol)来计算流体通过其传播的器官的孔口(3)的表面。 观察系统还包括用于执行测量通过所述孔口的所述流动的峰值速度(V SUB REG SUB>)的步骤的装置; 根据流体传播相对于所述孔口的上游流速表面处的流速传播的孔口(SOR)的表面计算出的流动速度值(V)的函数,从所述分段的速度表面计算的体积(Vol) ,以及通过所述孔的流速的峰值速度。 表面由下式给出:SOR = Vol。 V / V SUB>。 该系统可应用于二尖瓣反流表面的评估。
摘要:
The invention relates to a viewing system having means for processing a sequence of three-dimensional (3-D) ultrasound images for performing a quantitative estimation of a flow in a body organ. In particular, the invention relates to a medical viewing system and to an image processing method for performing an automatic quantitative estimation of the blood flow through the heart values, and/or of the regurgitant jet, from a sequence of 3-D color flow images. The invention particularly finds an application in the field of medical imaging in cardiology using ultrasound medical apparatus and/or viewing systems.
摘要:
An ultrasonic echographic imaging device for two dimensions (x, y), includes an adaptive filter for reducing the interference noise in the images obtained. A first circuit differentiates the signal (E(x, y)) applied to the adaptive filter and a second circuit forms the weighted sum of the signal (S(x, y)) leaving the adaptive filter (200) and the signal (dE(x, y)/dy) output of the differentiating circuit.
摘要翻译:用于二维(x,y)的超声波回波成像装置包括用于减少所获得的图像中的干扰噪声的自适应滤波器。 第一电路区分施加到自适应滤波器的信号(E(x,y))和第二电路形成离开自适应滤波器(200)的信号(+ E,cir / S /(x,y))的加权和 )和差分电路的信号(dE(x,y)/ dy)输出。
摘要:
An ultrasonic echography device, comprising at least one piezoelectric transducer, a stage for transmitting an ultrasonic beam, and a stage for receiving and processing echographic signals e returned to the transducer. The stage for receiving and processing comprises at least one grey-scale morphological filter which comprises elementary erosion filters and dilation filters for processing applied to the echographic signals.