Thyroid CT image abnormal density detection method

Abstract

The invention discloses a thyroid CT image abnormal density detection method. The method comprises the steps of acquiring CT images, reading the CT values of the pixels of the CT images and obtaining the judgment result of the anomalies of the CT values. According to the thyroid CT image abnormal density detection method of the present invention, a judgment algorithm is adopted to automatically search a location area where abnormal density exists in a thyroid CT image, and therefore, whether an abnormal density value exists in the thyroid CT image can be automatically judged, and abnormal density information can be provided for a doctor rapidly and timely, and the doctor can be automatically assisted to determine the location area where the abnormal density value exists; and a threshold optimization algorithm is adopted to calculate the optimal value of the threshold value of the CT value of the thyroid CT image, and therefore, the accuracy of the recognition of the abnormal density area can be further improved, the missed diagnosis rate of the doctor can be effectively reduced, and the workload of the doctor can be greatly reduced. The method of the invention is not affected by man-made subjective factors, and therefore, interference on pathological examination and other checks caused by the man-made subjective factors can be avoided, and the operation efficiency of a detection system and the work efficiency of the doctor can be greatly improved.

Description

technical field [0001] The invention relates to a method for detecting abnormal density of thyroid CT images. Background technique [0002] At present, with the popularization of CT applications and the increase in the number of thyroid CT examinations, the number of images read by radiologists has increased significantly. [0003] On the CT image of the thyroid obtained by CT scanning equipment, the density of the normal thyroid is uniform, and the CT value is generally in the range of 90-120HU, but in some cases the density inside the thyroid will change, such as high or low density. High-density substances are generally calcified abnormal tissues inside the thyroid gland, which increases the local density and increases the CT value, often greater than 120HU, reaching 200HU, or even higher; low-density substances generally indicate liquid-like components inside the thyroid, such as glandular Necrosis of body tissue, cysts and other lesions occur, and the CT value decrease...

AI Technical Summary

Problems solved by technology

[0004] For a long time, for the detection method of judging whether there is too high or too low density material in the thyroid gland based on the thyroid CT image to indicate the abnormality of the thyroid gland, doctors have generally used the method of directly reading the film with the naked eye to judge whether there is thyroid gland on the thyroid CT image. Substances with too high or too low density are produced inside to judge whether the thyroid gland is abnormal. This detection method relies on the subjective judgment of doctors. Under the comprehensive effect of various factors such as the influence of disease, it is easy to draw wrong conclusions, which may lead to missed or misdiagnosed diagnosis, so that patients cannot receive timely and accurate treatment.

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