Combined functional and anatomical diagnostic endpoints for assessing arteriovenous fistula dysfunction

Figure 2 Dependency of stenosis severity to the location of reference cross sec-tion[27]. In this figure stenosis is located at A. Depending on the location of the reference cross-section, one can calculate a stenosis severity ranging from -25% to 75%. The -25% diameter changes represents a case in which the minimum diameter in the arteriovenous fistulas circuit has happened elsewhere than cross-section A. Reprinted from Fahrtash et al[27], with permission.