Method and device for automatically determining scanning range of petrous bone

Abstract

The invention relates to a method and a device for automatically determining the scanning range of the petrous bone. The method comprises the following steps: determining the edge of the skull according to a head part positioning image; implementing head part circle fitting according to the determined edge of the skull to obtain a skull ring; determining an initial interesting area of the petrous bone according to the skull ring; using the initial interesting area as a scanning range of the petrous bone. According to the method and the device disclosed by the embodiment of the invention, the scanning range of the petrous bone can be automatically arranged; the time-costing labor-consuming manual operation and the resultant defects of artificial errors, low efficiency and the like are avoided; the workflow is simplified; the efficiency is improved; in addition, the eye positions can be automatically detected, and the petrous bone scanning range excluding the eyes can be automatically set through the method and the device.

Description

technical field [0001] The invention relates to the technical field of CT imaging, in particular to a method and a device for automatically determining the scanning range of petrous bones. Background technique [0002] CT scans of petrous bones are widely used to diagnose hearing deficits, inner ear disorders, vertigo, facial or auditory nerve disorders, deformities, bone disorders, and trauma, among others. Currently, scan range parameters or so-called CT scan localization are manually set based on scout images, and this manual operation leads to the following three main potential problems. [0003] First, manual setup is laborious and time-consuming, especially for some busy CT rooms. Automated handling can help increase efficiency and reduce operator fatigue. [0004] Second, if the operator is unfamiliar, manual settings may not be stable enough every time, or may be affected by the operator's psychological or physiological state. When the set scanning range is not en...

AI Technical Summary

Problems solved by technology

[0004] Second, if the operator is unfamiliar, manual settings may not be stable enough every time, or may be affected by the psychological or physiological state of the operator

When the set scanning range is not enough, the doctor may ask the operator to repeat the setting and scanning due to the loss of some important information.

When the scan range is set too wide, it is no problem for diagnosis, but too much unnecessary X-ray radiation dose is harmful to the patient

[0005] Again, the current workflow for setting the petrous bone scan range does not take into account avoiding the eye being scanned within the scan range, which is an organ that is very sensitive to X-radiation dose

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