METHOD FOR MULTISPIRAL COMPUTER TOMOGRAPHY-PHLEBOGRAPHY OF LOWER LIMBS IN CASE OF VARICOSE VEIN DISEASE

摘要

FIELD: medicine.;SUBSTANCE: invention can be used for diagnosis of violations of venous hemodynamics in patients with chronic venous insufficiency of the lower limbs (LL CVI). Multispiral computer tomography-phlebography of LL in case of varicose vein disease is perfromed, for which subcutaneous veins of the researched LL foot are catheterized with introduction of an x-ray contrast mixture (XRCM). The first stage with simultaneous delayed start from the beginning of XRCM introduction and patient's breathing and the second scannig stage with a delayed start at free breathing are performed subsequently, creating a 3D image of veins with automatic volumetric rendering protocols set in the multispiral computer tomograph (MSCT). At that, before the first scanning begins, cuffs are imposed on the ankle area and the lower third of the thigh, and pressure in the cuff is first raised in the ankle area. After introduction of the calculated volume of XRCM pressure is raised on the thigh as well. After completion of the first scanning stage, pressure in the thigh cuff is reduced to zero and a functional test on the effectiveness of talocrural musculo-venous LL pump operation is performed by conducting five rear bends of the patient's foot. At that, both scanning stages are performed in the direction from the pelvis to the foot.;EFFECT: method provides efficient, accurate and physiological (in terms of pressure increase in the venous line while changing the body position) contrast and visualization of not only lower limb veins, but also of the patient's pelvis with the most comprehensive phase contrast progress proximally with determination of degree of limb intramuscular veins ectasia.;1 ex