Temporal bone inner ear bone cavity structure automatic segmentation method based on coarse-to-fine dense coding and decoding network

Abstract

The invention discloses a temporal bone inner ear bone cavity structure automatic segmentation method based on a coarse-to-fine dense coding and decoding network, and belongs to the field of medical images. According to the method, a framework from coarse to fine is adopted, coarse segmentation is carried out on an anatomical structure to be segmented in a temporal bone region, and coordinates of a central point are calculated; and at the periphery of the central point, expanding to an area capable of completely containing the inner ear bone cavity structure like the outside, and reserving a part of background information as a sub-area for further precise segmentation are carried out. In the fine segmentation stage, a dense connection module is introduced in the encoding process, more sufficient features are extracted, and hole convolution is added into the dense connection module, so that a segmentation algorithm obtains a larger receptive field for a to-be-segmented target, and more sufficient surrounding features and spatial information are extracted. In the decoding stage, features extracted in the encoding stage are subjected to up-sampling through transposed convolution, and after each time of transposed convolution, a dense connection module is introduced, so that the repeated utilization of decoding information is enhanced. According to the invention, the segmentation is more accurate.

Description

technical field [0001] The invention belongs to the field of medical image processing, and in particular relates to a method for automatically segmenting temporal bone and inner ear bone cavity structure by a coarse-to-fine dense codec network. Background technique [0002] Temporal bone CT is an important reference for doctors to check ear diseases. In the temporal bone region, it is divided into three regions: the outer ear, the middle ear, and the inner ear, and contains more than 30 tiny anatomical structures. Among them, the inner ear area is one of the important areas of the temporal bone, helping the body to hear sounds and maintain balance. This area mainly includes structures such as the cochlea, vestibule, external semicircular canal, posterior semicircular canal, and anterior semicircular canal. These structures are mainly composed of connected bone cavity structures, and they play different roles in ensuring human hearing and balance. The cochlea works with the...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the existing medical imaging small target segmentation method

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