METHOD OF DETERMINATION OF THE ANATOMICAL STRUCTURE OF THE USE OF THE PULSED PROTECTION Russian patent published in 2017 - IPC A61B8/10 

FIELD: medicine.

SUBSTANCE: spend multislice computed tomography with contrast lacrimal pathways. Thick sections were analyzed not more than 0.7 mm in the first horizontal plane downward from a plane passing at the boundary between the upper and middle thirds of the medial wall of the maxillary sinus until the slice not containing the contrast agent. When visualizing the circular bone nasolacrimal duct wall soft tissue nasolacrimal duct and contrast agent filling the lumen of the nasolacrimal duct in all sections viewed, define the structure as the I version. If there are sections, on which soft-tissue component represented nasolacrimal duct hemichannels, open in a medial direction so that the contrast agent is located medial to the lacrimal tract structures II define the structure as an option. Analyze the reconstruction in the sagittal plane. In the presence of reconstructions, bone passing through the nasolacrimal duct, which distal nasolacrimal duct filled with contrast material, is located on the vertical axis, defined as a structure III version. In the presence of reconstructions in which the distal nasolacrimal duct, filled with contrast medium is deflected from the vertical axis anteriorly or posteriorly at an angle of more than 30°, the structure is defined as an IV option.

EFFECT: method allows accurate determination of the anatomical structure of the mouth of the nasolacrimal duct and its location below the line bounding the middle and lower third of the maxillary sinus, to select the correct surgical treatment tactics of Dacryostenosis.

4 dwg, 3 ex