2023 Volume 43 Issue 1 Pages 26-35
Previously we have manually described the CV with non-contrast computed tomography but it is often difficult to describe the CV branches. So we invented a new method（Fat description method）that is able to analyze the CV anatomy focusing on the relationship between the CV and the epicardial fat（Fat）and is able to describe the CV branches. The aim of this study is to evaluate the accuracy of this method. In a total of 52 patients implanted with CRT devices, we describe the main CV with non-contrast computed tomography and the CV branches with the Fat description method. The described CV branches were classified as anterior, lateral, and posterior, and accuracy was evaluated in 3 grades （1 : exactly described ; 2 : partly described ; 3 : not described）compared to the CV venogram during the implantation. The target CV branches were 70 veins : 21 veins in the anterior site, 26 veins in the lateral site, and 23 veins in the posterior site. In the anterior site 8 veins were grade 1（38.1％）, 5 veins were grade 2（23.8％）, and 8 veins were grade 3（38.1％）. In the lateral site, 14 veins were grade 1（53.8％）, 4 veins were grade 2（15.4％）, and 8 veins were grade 3（30.8％）. In the posterior site, 15 veins were grade 1（65.2％）, 6 veins were grade 2（8.7％）, and 2 veins were grade 3（8.7％）. Fat description is an exact and effective method to describe the CV branches but depends on the presence of fat.
