Calcification location method based on dual-view mammography

Abstract

The invention provides a two-viewing-angle mammography based calcification positioning method. The method includes the steps: 1) establishing a coordinate system with the horizontal direction serving as an x-coordinate and the obliquely downward direction serving as an oblique coordinate, wherein an included angle between the oblique coordinate and the x-coordinate is consistent with an MLO (mediolateral oblique)-position X-ray film photographing angle; 2) obtaining an absolute value of the x-coordinate according to a CC (craniocaudal)-position X-ray film, and obtaining an absolute value of the oblique coordinate according to an MLO-position X-ray film; 3) selecting the left breast or the right breast and respectively judging plus or minus of the x-coordinate and the oblique coordinate; 4) obtaining a coordinate of a calcification position by combining the step 2) with the step 3), and finding out a corresponding coordinate point in the coordinate system. The two-viewing-angle mammography based calcification positioning method has the advantages that the x-coordinate value and the oblique coordinate value are obtained by the aid of the CC-position X-ray film and the MLO-position X-ray film, the corresponding point is found out in the established coordinate system, the breast position corresponding to the corresponding point is the calcification position, and thereby operation is convenient and accurate, and the method provides reliable technical support for routine surgical biopsy.

Description

technical field [0001] The invention belongs to the field of calcification focus positioning, in particular to a method for calcification focus positioning based on dual-view mammography. Background technique [0002] In recent years, with the continuous improvement of breast imaging equipment, especially the update and improvement of the full digital mammography system, the imaging rate of small calcifications in the breast with negative clinical palpation has gradually increased. How to combine the images of tiny calcifications on X-ray films to perform localized biopsy of tiny calcifications in the breast with negative clinical palpation is the key to improving the early diagnosis rate and accurate resection rate of breast cancer without mass. [0003] At present, the full digital mammography system and the three-dimensional positioning biopsy system can be used to locate the preoperative hook wire of the calcification, and the resection of the calcification and the histo...

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Problems solved by technology

[0003] At present, the full digital mammography system and the three-dimensional positioning biopsy system can be used to locate the preoperative hook wire of the calcification, and the resection of the calcification and the histopathological examination under the guidance of the positioning line are an effective and safe diagnostic method , but its expensive equipment investment and its innovative positioning method limit its promotion and popularization in my country

[0004] Due to the lack of convenient and reliable devices for the localization of tiny calcifications in the breast with negative palpation, large tissue excision biopsy or 1 / 4 mastectomy is often used clinically to remove calcifications, which has a certain degree of blindness and is harmful to patients. more traumatic

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