Keywords:
Veins / Vena cava, Vascular, Arteries / Aorta, CT, CT-Angiography, Catheter venography, Contrast agent-intravenous, Diagnostic procedure, Comparative studies, Haemodynamics / Flow dynamics
Authors:
S. C. Spiliopoulos1, N. A. Arkoudis1, L. Reppas1, K. Palialexis1, V. Zymvragoudakis1, K. Antonopoulos1, G. Geroulakos1, E. Brountzos2; 1Athens/GR, 2Haidari/GR
DOI:
10.26044/ecr2019/C-1287
Aims and objectives
In the majority of reports on the endovascular management of May Thurner syndrome,
measurements have been performed in axial computed tomography (CT) images.
However,
area measurement obtained by intravascular ultrasound (IVUS) is considered in current practice the gold standard for assessing these lesions.
Furthermore,
there is increasing awareness that due to the irregular shape of veins,
especially when compressed,
diameter measurements are less accurate than area measurements.
The debate regarding the definition of a significant iliofemoral vein stenosis is ongoing.
Any attempt to treat obstruction should be preceded by an accurate and reproducible measurement of the degree of stenosis.
The theoretical relationship between a diameter stenosis of 50% is a 75% area stenosis in arterial disease.
In collapsible veins with a constant perimeter,
a 50% diameter reduction is in theory only a 33% area stenosis because of elliptical transformation.
The difference between diameter and area for irregular May Thurner lesions has never been assessed.
This study aims to investigate potential differences between assessment of stenosis in May Thurner syndrome by measurements of diameter versus area measurements in CT imaging.