Ultrasound diagnostic device, medical image-processing device and medical image-processing method
A diagnostic device and medical image technology, applied in the directions of sonic diagnosis, ultrasonic/sonic/infrasonic diagnosis, infrasonic diagnosis, etc., can solve the problem of obstructing the observation of the boundary position of the subject's tissue, etc.
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no. 1 approach
[0022] The ultrasonic diagnostic apparatus described in the embodiment includes: an image acquisition unit that acquires an ultrasonic image; a first calculation unit that calculates an edge direction of a local area in the ultrasonic image, an edge size in the local area, and an edge direction consistency in the local area. ; The second calculation unit calculates the synthesis coefficient using the edge size and the edge direction consistency; the third calculation unit calculates the filter coefficient of the area corresponding to the local area based on the synthesis coefficient; and the filter unit uses the filter coefficient to implement the ultrasonic image Filter processing for sharpening or smoothing ultrasound images.
[0023] Embodiments will be described below with reference to the drawings. In addition, in the following description, the same code|symbol is attached|subjected about the structural element which has substantially the same function and structure, and ...
no. 2 approach
[0079] In the first embodiment, the case where the tissue enhancement filter function is applied to the ultrasonic image data itself to sharpen or smooth the image has been described. On the other hand, in this second embodiment, the case where an image is decomposed into multiple resolutions and the tissue enhancement filtering function described in the first embodiment is applied to signals or data of each decomposition level will be described.
[0080] Furthermore, an example of decomposing an image into multi-resolution and performing anisotropic nonlinear diffusion filtering on each decomposed level is described in Japanese Patent Laid-Open No. 2009-153918.
[0081] Figure 4 It is a diagram showing a block configuration of an ultrasonic diagnostic apparatus according to the second embodiment. and figure 1 The difference is that the tissue enhancement processing unit 26 is replaced by the speckle elimination processing unit 31 .
[0082] Such as Figure 5 As shown, th...
no. 3 approach
[0094] An example in which speckle removal processing is performed on two-dimensional image data (or two-dimensional raw data) is shown in the first and second embodiments. In contrast, a case where the ultrasonic diagnostic apparatus 1 according to the present embodiment executes tissue enhancement filtering processing on three-dimensional volume data will be described. In addition, in order to demonstrate concretely in this embodiment, the case where tissue enhancement filtering process is performed on the 3D volume data of raw data before a scan conversion process is taken as an example. However, the present invention is not limited to this example, and may be applied to three-dimensional volume data of ultrasonic image data after scan conversion processing.
[0095] Figure 6 It is a diagram showing the configuration of the ultrasonic diagnostic apparatus 1 according to the present embodiment. and figure 1 The difference is that a volume data generation unit 32 is also ...
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