Rib auto-demarcating method and device

Abstract

The invention discloses an automatic rib marking method, which comprises: extracting thoracic bones from scan data, wherein the thoracic bones comprise ribs; according to the feature representation of a first rib on a sagittal plane, determining the position of the first rib and a basic sagittal plane; according to the position of the first rib, coding the first rib and other rib regions on the basic sagittal plane to mark the sequence number of the ribs corresponding to the rib regions. The invention also discloses an automatic rib marking device. The method can accurately mark the rib regions according to the feature presentation of the ribs on the sagittal plane; in addition, the method can obtain ideal rib outlines easily, facilitate the initial seed points of the ribs and consequently complete the positioning of the whole ribs accurately.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a method and device for automatic rib calibration. Background technique [0002] Rib fractures are very common in clinical practice. In view of the needs of current clinical treatment and forensic science, timely and accurate diagnosis of rib fractures is very important. Chest CT scanning for rib fractures can improve the accuracy, but it is difficult to locate the ribs. For example, the use of spiral CT scans to display traumatic rib fractures or rib lesions provides richer and more accurate image information than plain X-ray films; however, these image information cannot directly indicate the location of the lesion, and imaging doctors need to analyze these image information In order to point out the exact location of the lesion. However, because the spiral CT scan provides a large number of cross-sectional rib images, and the ribs are intermittently inclined, it often takes a ...

AI Technical Summary

Problems solved by technology

[0005] However, for some patients, see figure 1 , on the selected coronal plane, it is sometimes difficult to distinguish the outline of the clavicle from the outline of the first rib (the small white ellipse in the figure is the outline of the bone), which may easily lead to inaccurate automatic positioning. For example, some patient data are in accordance with this method The selected coronal clavicle and rib contours are very close in size, so the method proposed by this method to remove the clavicle contour according to the contour size is difficult to achieve on the scan data of such patients; in addition, for the data of osteoporosis patients , see figure 2 , sometimes it is difficult to get the ideal rib outline and initial seed point on the selected coronal plane (the bone outline in the upper part of the figure is very fuzzy), so the subsequent rib extraction cannot be performed accurately

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