FIELD: medicine.
SUBSTANCE: method involves measuring main pulmonary artery diameter. Chest diameter is additionally measured at the level the examination is carried out. Vasculothoracic index VTI1 is calculated as ratio of transverse chest diameter at the level of the main pulmonary artery to main pulmonary artery diameter. VTI2 is also calculated as ratio of transverse chest diameter at the level of pulmonary artery bifurcation to main pulmonary artery diameter at given level. Mean VTI is calculated as (VTI1+ VTI2)/2. Mean VTI value being equal to 6.9-9.4, moderate pulmonary hypertension severity is considered to be the case. The value being less than 6.8, apparent pulmonary hypertension is considered to be the case.
EFFECT: high accuracy of diagnosis.
2 dwg
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