FIELD: medicine.
SUBSTANCE: method involves carrying out ultrasonographic examination. Posterior epidural veins image is used as anterior boundary of yellow ligament in Doppler flowmetry energy mode. Hyperechogenic line of vertebra arch with acoustic shadow is used as posterior boundary. Ligament thickness is measured by determining distance from posterior boundary of signals received from posterior epidural veins to hyperechogenic line of vertebra arch with acoustic shadow.
EFFECT: high accuracy of measurements.
2 dwg
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