Method and device for measuring fetal head circumference in ultrasound images

Abstract

The present application provides a method and device for measuring the head circumference of a fetus in an ultrasonic image, obtaining the position of the longest edge line in the ultrasonic image, and searching for a designated area according to the position; judging whether the designated area is successfully searched; If yes, the search results are combined in a specified manner to obtain the fetal head circumference area, and the fetal head circumference is calculated according to the fetal head circumference area. By using the position of the longest edge line as the starting position of the search, it can avoid the sliding window to search the entire image area during automatic positioning of the fetal head position, and improve the search efficiency. At the same time, if the search for the head circumference area fails, it can be identified through the second area Methods The positioning of the head circumference area was carried out, which avoided manual operation and was convenient for clinicians to diagnose.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method and device for measuring fetal head circumference in ultrasonic images. Background technique [0002] With the continuous improvement of the resolution of ultrasonic diagnostic equipment, fetal ultrasound examination during pregnancy has been deepened and refined. A comprehensive scan of the fetus by ultrasound is currently the most commonly used and most important means of diagnosing fetal malformations. It mainly measures fetal biparietal diameter (BPD), head circumference (Head circumference, HC), abdominal circumference (Abdominal circumference, AC) or abdominal diameter (Abdominal diameter, AD) and femoral diaphysis length (Femoral diaphysis length, FDL) can estimate gestational age and fetal size. The advancement and application of this technology will benefit obstetric clinicians, pregnant women, etc. [0003] At present, the positioning and measure...

AI Technical Summary

Problems solved by technology

At present, the existing methods of automatically identifying and measuring fetal head circumference through medical image processing technology generally have certain deficiencies, such as: the classifier established by the Hog feature is not very accurate in identifying and positioning the fetal head circumference interest area, Therefore, clinicians need to manually operate; when using the sliding rectangular window detection method to scan the ultrasound image, it is necessary to start scanning from the beginning of the image, which is a waste of time; by enhancing the edge gray level of the fetal head circumference or abdominal circumference, the fetus can be identified In the head circumference or abdominal circumference area, the feature vector is extracted from the fetal image, and the single-pixel edge image of the fetal head circumference or abdominal circumference area is obtained by using the edge detection operator and the feature vector. The acquisition process is easy to introduce wrong edges, resulting in fetal head circumference. Calculation error; Ultrasound fetal head circumference segmentation method based on active contour model and deformation model, poor robustness and time-consuming, and lack of clinical application to prove feasibility

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