METHOD FOR PROCESSING SCINTIGRAPHIC IMAGES OF HEAD AND NECK TO PREDICT THE RISK OF SECONDARY OBLITERATION OF LACRIMAL PASSAGES IN PATIENTS AFTER RADIOIODINE THERAPY Russian patent published in 2023 - IPC A61B5/107 G01T1/164 

FIELD: medicine.

SUBSTANCE: namely endocrinology, ophthalmology, radiology, nuclear medicine and radionuclide diagnostics, method can be used to identify areas of accumulation of a radiopharmaceutical drug (RPD), corresponding to the lacrimal passages, using scintigraphic images of the head and neck of patients after radioiodine therapy. On the anterior projection of the scintigraphic image of the patient's head and neck, areas of RPD accumulation corresponding to the lacrimal passages are detected. The identified areas are outlined. At the same time, in order to identify areas of accumulation of RPD, corresponding to the lacrimal passages, zones of RPD accumulation in the submaxillary salivary glands - left and right - are visualized on the scintigraphic image. If the mentioned zones of RPD accumulation in the submaxillary salivary glands are not determined, visualize the zones of RPD accumulation in the parotid salivary glands - left and right. Their geometric centers are found with the subsequent selection of the upper and lower boundaries of the areas of RPD localization, corresponding to the lacrimal passages. In this case, the lower boundary of the location of this area is determined at a distance of 77.3± 6.0 mm from the line connecting the geometric centers of the zones corresponding to the submaxillary salivary glands, or at a distance of 27.6± 2.3 mm from the line connecting the geometric centers of the areas corresponding to the parotid salivary glands. The upper limit of the location of this area is determined at a distance of 97.1± 6.8 mm from the line connecting the centers of the zones corresponding to the submaxillary salivary glands, or at a distance of 47.4± 3.4 mm from the line connecting the centers of the zones corresponding to the parotid salivary glands.

EFFECT: accurate determination of the region of the lacrimal passages on scintigraphic images due to anatomical landmarks.

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