Objective: Comparison of interobserver variation in a) angiographic quantification of iliac artery stenosis and b) indications for stem implantation. Comparison of stenosis quantification with measured transstenotic systolic pressure gradient. Materiál and methods: 26 „diagnostic" angiographies, 10 post PTA angiographies and 19 angiographies after stem implantation were independently reviewed by 4 observers: 3 were from outside hospitals, 1 of our Institute. Subjective quantification of stenosis severity was compared between the observers and also to the measured pressure gradient. Recommendation for stem implantation made by individual readers were tabulated. Results: Interobserver agreement for stenosis severity was poor, especially for the group of diagnostic angiographies where ranked between 37 - 100 %. When compared to transstenotic pressure gradients the agreement was also poor and in some observers is Glose to 50 % only. Similarly the indication for stem implantation is not uniform as well and differed notably from observer to observer. Conclusion: Significant variability in estimation of iliac artery stenosis severity was found between four independent readers. There is also significant variability in recommendation for stem implantation. Thus, there is little uniformity in angiographic evaluation and treatment plans among interventional radiologists in our country.

        Key words: iliac PTA - angiography - interobserver evaluation variability