METHOD FOR DIFFERENTIAL DIAGNOSTICS OF NODULAR ADENOMYOSIS AND UTERINE MYOMA Russian patent published in 2023 - IPC A61B8/08 

FIELD: medicine.

SUBSTANCE: invention relates to the field of medicine, namely, to ultrasound diagnostics and gynaecology. Ultrasound examination is performed, including the presence of high- and low-echogenicity areas of various sizes and the uniformity of distribution thereof in the tissues of the imaged pathology site in 2D mode. Additionally, the ultrasound examination is continued in 3D mode using a volumetric intracavitary sensor. Compression elastography is performed by creating additional pressure applying colour mapping of myometrial regions with different elasticity characteristics in order to assess the stiffness of tissue of the examined site compared with the stiffness of the surrounding myometrium. Herewith, type 2a corresponds to elastic structures and is mapped in green. Type 2b corresponds to moderately inelastic heterogeneous structures and is mapped in green with admixed yellow and red. Type 2b corresponds to low-elasticity structures and is mapped in green with added blue. Type 3 corresponds to highly stiff structures mapped in blue-green with blue predominating, wherein masses mapped mostly in blue are considered myomas, and the adenomyosis nodule is characterised by a large amount of green. Myometrial vascularization is also assessed applying the PowerDoppler 3D GlassBody approach. The area of interest herein is positioned so that the nodule under study is included occupying no more than half of the image area. The Glass Body function is then used, followed by applying the 3D function, resulting in a 3D image of the uterus with vessels distributed around the site under study or passing through the myometrial mass. The course of the vessels relative to the pathology site is herein assessed: the concentric vessel arrangement is characteristic of myomas. If the course has no specific direction, the data obtained are viewed as a manifestation of nodular form of adenomyosis. A presence of myoma is assessed based on the presence of distinct boundaries with the myometrium formed by a pseudocapsule.

EFFECT: most accurate differential diagnostics of the site of adenomyosis and the myomatous nodule with lower material costs and possibility of selecting the correct strategy for therapy of patients.

1 cl, 2 ex