Hand bone age automatic evaluation and correction method based on TW3 skeletal development association rule
An automatic assessment and bone development technology, applied in the field of medical image analysis, can solve problems such as large errors in maturity assessment, lack of data, and reduce the accuracy of bone age assessment, so as to avoid negative effects, avoid dependence, and improve accuracy
Pending Publication Date: 2022-07-29
HEFEI UNIV OF TECH +1
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However, the current evaluation effect is not satisfactory. Due to the lack of data, small differences between different maturity levels, and errors in manual labeling, the maturity evaluation errors of some bones in some hand bone pictures are relatively large, which seriously reduces bone age evaluation. the accuracy of
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[0033] In this embodiment, an automatic assessment and correction method for hand bone age based on the TW3 skeletal development correlation law uses the TW3 skeletal development correlation law to correct the results of the automatic bone age assessment, which effectively improves the accuracy of the assessment. Specifically, as figure 2 shown, proceed as follows:
[0034] Step 1: The TW3 bone age scoring method summarizes the developmental association rules of different bones in the hand, such as figure 1 shown. according to figure 1 Build an array of skeletal association law maturity sequences S={S 1 ,S 2 ,S 3 ,...,S i ,...,S n }, where S i represents the i-th skeletal association regular maturity sequence, and n is the total number of regular maturity sequences; and Represents the i-th skeletal association law maturity sequence S i the maturity of the k-th skeletal region in the medium; and k∈[1,K], K represents the type of skeletal region;
[0035] Step 2...
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The invention discloses a method for automatically evaluating and correcting the bone age of a hand bone based on a TW3 skeletal development association rule. The method comprises the following steps: 1, acquiring the TW3 skeletal development association rule of the hand bone; 2, constructing a bone age automatic evaluation network based on a TW3 method; 3, training the bone age automatic evaluation network offline; 4, acquiring a predicted maturity sequence by using the trained bone age automatic evaluation network; 5, correcting and predicting the maturity sequence by using a TW3 hand bone skeletal development association rule; and 6, calculating the corrected bone age by a TW3 scoring method. According to the method, the singular value in the maturity prediction sequence is modified by using the TW3 bone age development rule, so that the influence of the singular value on final bone age prediction can be reduced, and the accuracy of automatic evaluation of the bone age of the hand bone based on the TW3 method can be effectively improved.
Description
technical field [0001] The invention relates to the field of medical image analysis, in particular to an automatic evaluation and correction method for hand bone bone age based on the association rule of TW3 bone development. Background technique [0002] Bone age assessment based on hand bone X-ray images is often used to judge the growth and development of children. At present, there are two main manual evaluation methods: GP method and TW method. The TW method assesses the maturity level of specific bones in the hand and converts the skeletal maturity into a score, adding the scores of all bones to obtain a total maturity score, and finally calculating the bone age from the total maturity score. The TW law has been revised several times, and the latest TW3 law has been widely used. Compared with the GP method, although the evaluation process of the TW3 method is more complicated and time-consuming, it is robust to mispredictions in some bones, so the evaluation of this ...
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IPC IPC(8): G16H50/30G16H30/40G06V40/10G06V10/26G06V10/74G06V10/774G06V10/764G06V10/82G06K9/62G06N3/04G06N3/08
CPCG16H50/30G16H30/40G06N3/08G06N3/045G06F18/22G06F18/24G06F18/214
Inventor 王晓华范伟程峰胡敏盛海王宇航
Owner HEFEI UNIV OF TECH