Ultrasound diagnostic apparatus

摘要

A pre-memory 14 stores a plurality of sets of tomographic image data in a time-series order. A virtual period setting unit 22 calculates a virtual period relating to an object based on the tomographic image data stored in the pre-memory 14. A base image searching unit 24 searches for base images from the tomographic image data using the virtual period. A division basis setting unit 26 sets division bases according to the base images within an image string constituted of tomographic image data. A reconfiguration processing unit 20 uses the respective base images as boundaries for the division to divide the tomographic image data stored in the pre-memory 14 into a plurality of image groups. Then, data blocks of tomographic images which correspond to one another on a periodic basis are sequentially extracted from the respective image groups, and are stored in a post-memory 28.

主权项

1. An ultrasound diagnostic apparatus comprising:
a probe that emits and receives ultrasonic waves to and from a three-dimensional region including an object in periodic motion; and a control unit, wherein the control unit is configured to: control the probe such that a scanning plane is displaced over a plurality of periods of the motion so as to form a plurality of scanning planes within the three-dimensional region; set a virtual period which is a temporary period of motion relating to the object; search for a plurality of base images from an image string constituted of a plurality of images corresponding to the plurality of scanning planes based on a mutual difference value which is a feature amount relating to the periodicity of the motion; divide the image string into a plurality of image groups using the respective base images as dividing units, and extracts a plurality of images which correspond to one another on a periodic basis from the respective image groups; and form a display image of the object based on the plurality of images which correspond to one another on a periodic basis; wherein the mutual difference value is calculated for each of the images by multiplying a difference between a pixel value of the image and a pixel value of an adjacent image by one of these two pixel values.